Entries |
Document | Title | Date |
20080211438 | Fully Charged Battery Protection - A method for protecting against overcharging a battery of a light-weight utility vehicle during regenerative braking includes controlling a regenerative braking process such that a predetermined activation amount of braking torque is produced by a motor of the vehicle when braking torque within a full braking range is initially requested. The predetermined activation amount of braking torque is less than the full braking range. The method additionally includes reading a voltage across a battery of the vehicle induced by a current generated by the motor as the activation amount of braking torque is produced. The method further includes increasing the amount of braking torque produced by the motor, if the voltage across the battery is less than a specified battery voltage threshold. | 09-04-2008 |
20080218106 | Method of Recovering Energy form the Turntable Motor in an Optical Disc Drive and Optical Device - The present invention relates to a method of recovering energy from the turntable motor ( | 09-11-2008 |
20080246423 | DRIVE REGENERATIVE CONTROL SYSTEM - Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a control circuit having a drive control circuit of the motor and a regenerative control circuit, and a detection unit for detecting the driving status of the drivee, the drive control circuit and regenerative control circuit have a control unit for controlling, linearly or in multiple stages, the duty ratio of the drive or regenerative signal to be supplied to the motor based on the phase difference of the phase of the detection signal from the detection unit and the command value signal to the motor. | 10-09-2008 |
20080309264 | Control Apparatus for Rotational Electric Machine and Driving Apparatus for Vehicle - A control apparatus for controlling a rotational electric machine and a driving apparatus for a vehicle that include an AC motor that rotates wheels and is driven by a power supplied from a battery, an instant variation detecting unit provided in a motor controller that detects a instant variation of a current or voltage of the battery, and a current command operating unit that changes a current command to be sent to the AC motor such that an internal loss of the AC motor is increased by using an internal-loss-increase-use Id·Iq table. | 12-18-2008 |
20090026987 | Vehicle Drive Device and Method of Controlling Vehicle Drive Device - A vehicle drive device includes an engine ( | 01-29-2009 |
20090051304 | VEHICLE, CONTROL METHOD THEREOF AND BRAKING DEVICE - During braking, lower limits are set based on an input limit of a battery and a brake pedal position, and the set lower limits limit regenerative torques output from motors. This prevents an output of an excessive braking force and torque shock caused by a hydraulic brake being not able to follow sudden changes in the regenerative torques output from the motors when the vehicle speed is reduced. | 02-26-2009 |
20090066273 | Regenerative torque shifter - The regenerative torque shifter is a system for electric/hybrid electric vehicles that includes a driver-operated control device mounted in the vehicle and a control unit linked to a motor controller. The driver sets a level of regenerative braking desired by manipulating the control device. Based on output from the control device, the control unit directs the motor controller to apply a corresponding level of regenerative braking action by varying the amount of load seen by the motor. | 03-12-2009 |
20090079369 | ELECTRIC POWERED VEHICLE - An electric powered vehicle according to the present invention comprises a battery, an electric power converting device, an electric motor, a drive wheel, a control part, an accelerator, a brake, and a rotation sensor. The control part detects the velocity using the rotation sensor. When a first velocity threshold is Vt | 03-26-2009 |
20090167216 | Vehicle power controller - A power controller alleviating change of braking feeling caused by reduced regenerative braking force is provided. Energy generated by regenerative braking is used for charging a capacitor. The charging power P(C) is calculated and whether P(C) has reached a maximum value WMAX of predetermined limit control value WIN(C) or not is determined. If P(C) is determined to have reached WMAX WIN(C) is regulated to be smaller from that time point. | 07-02-2009 |
20090167217 | Vehicle Power Controller - An ECU executes a program including the steps of: calculating regenerative power value P based on a brake pressure (S | 07-02-2009 |
20090230898 | SERVO AMPLIFIER WITH REGENERATIVE FUNCTION - A servo amplifier for a robot capable of avoiding an excessive capacity for dealing with a regenerative power to achieve downsizing, cost reduction and energy saving of the device. A servo amplifier for driving servomotors of a robot to perform an operation using an electric power from a power source. The servo amplifier comprises a changeable converter connected with the power source and a plurality of inverters electrically connected with the converter and the servomotors. The changeable converter is selectively provided as a converter having a regenerative function of returning a regenerative power generated in the servomotors to the power source, or a converter having a regenerative function of discharging the regenerative power through a resistor, depending on conditions of the operation by the robot. | 09-17-2009 |
20090243522 | MOTOR DRIVE SYSTEM - In a drive system of an AC motor in which a motor current is feedback-controlled, a motor current command is produced in a normal operation according to a torque command value on an optimum efficiency characteristic line so as to select an optimum current phase maximizing an output torque with a constant motor current amplitude. Conversely, when the AC motor produces an excessively generated power exceeding a regeneratable power quantity of the AC motor, a consuming operation is performed for intentionally increasing the power loss in the AC motor. In the consuming operation, the motor current command is produced according to the torque command value on a loss increase characteristic line to change the current phase from the above optimum value. Thereby, the power loss in the AC motor can be increased to consume the surplus power without causing instability in the motor control. | 10-01-2009 |
20090243523 | Electric rotating machine control system and vehicle driving system including the electric rotating machine control system - A control system includes an electric rotating machine; a driving circuit that is connected to a DC power supply, the driving circuit includes a frequency conversion unit configured such that, when the electric rotating machine is to be driven in a power running mode, the frequency conversion unit converts an output of the DC power supply into AC electric power, and when the electric rotating machine is to be driven in a regenerative operation mode, the frequency conversion unit converts an output of the electric rotating machine into DC electric power; and a control unit that controls the driving circuit, wherein the control unit judges whether a connection between the DC power supply and the driving circuit is being maintained, and is configured such that, when the connection is not being maintained, regenerative electric power generated by the electric rotating machine is reduced by controlling the driving circuit. | 10-01-2009 |
20090284193 | Method for Controlling a Deceleration Process of a DC Motor and Controller - The invention is directed to a method for controlling a deceleration process of a DC motor ( | 11-19-2009 |
20090295314 | METHOD AND SYSTEM FOR IMPROVING ELECTRICAL LOAD REGENERATION MANAGEMENT OF AN AIRCRAFT - Regenerated power from actuation loads of an aircraft may be returned to the distribution bus of the aircraft. In the past, actuators were either hydrostatic or pneumatic. With the furtherance of more electric architecture (MEA) aircraft, there has been an increase in electrical actuation modes. The power or current exchange between electrical buses and the electromechanical and electro-hydrostatic flight control actuators is bidirectional, resulting in a need to accommodate regenerative power. Conventional methods may use shunt regulation to dissipate regenerated power. These methods require additional cooling to reject the heat generated. This regenerated power is wasted as dissipated heat. The present invention, on the other hand, may dump the regenerated power back to a power sink, such as into ancillary electrical loads or to the starter/generator as mechanical (kinetic) energy. In the present invention, the energy may not be wasted nor may it generate excessive heat that needs to be dissipated. | 12-03-2009 |
20090302788 | REGENERATING BRAKING SYSTEM INCLUDING SYNCHRONOUS MOTOR WITH FIELD EXCITATION AND CONTROL METHOD THEREOF - A regenerating braking system is provided, which includes: a synchronous motor with field coil excitation including a cylindrical stator coil, an inverter electrically connected to the stator coil, a battery electrically connected to the inverter, a rotor coil provided in an internal space of the stator coil, a two-way switch electrically connected to the rotor coil, and a capacitor electrically connected to the two-way switch; and a controller, wherein when the first differential calculus of acceleration of a load on the synchronous motor becomes negative, the controller stores regenerative power regenerated in the rotor coil from the stator coil, in the capacitor through the two-way switch, and wherein the controller supplies the regenerative power stored in the capacitor to the rotor coil through the two-way switch. | 12-10-2009 |
20090315490 | METHOD FOR CONTROLLING A DECELERATION PROCESS OF A DC MOTOR AND CONTROLLER - The invention is directed to a method for controlling a deceleration process of a DC motor ( | 12-24-2009 |
20100033117 | SOFT-START CIRCUIT - A soft-start circuit includes a power source, a switch, a capacitor and a regeneration brake circuit. The regeneration brake circuit absorbs a return current. The regeneration brake circuit includes a resistor, a diode and a transistor. The resistor is connected between two poles of the power source via the transistor. The diode is connected between the resistor and the positive pole of the power source via the switch. The capacitor is connected between the negative pole of the diode and the transistor. The switch is connected between the negative pole of the diode and resistor. When the switch turns off, the power charges the capacitor via the resistor and the diode of the regeneration brake circuit. When the switch turns on, the return current turns the transistor on, and the resistor absorbs the return current. | 02-11-2010 |
20100039054 | VEHICLE, SYSTEM AND METHOD - A system includes a retarder in electrical communication through an electric link with an alternator, and a controller that compares a power measurement with an accessory load on a system during a retard event, and can reduce an electrical load on the alternator, or can remove all electrical loads from an engine, when electric power that is generated from the retarder is measured to be greater than an accessory load on the system. The system may include an alternator that provides a motor function to rotate a shaft coupled to an engine that is mechanically coupled to one or more mechanically drivable accessories. The alternator powers the mechanically drivable accessories in place of or in addition to the engine. | 02-18-2010 |
20100066278 | System, Lifting Column and Method for Energy-Efficient Lifting and Lowering a Load - The present invention relates to a system, lifting column and method for an energy efficient lifting and lowering a load, such as a vehicle. The system according to the invention comprises:
| 03-18-2010 |
20100090625 | AUTOMOTIVE SYSTEM AND POWER CONVERTER ASSEMBLY WITH A BRAKING CIRCUIT - An automotive system includes an electric motor, a direct current (DC) power supply coupled to the electric motor, a power converter including at least one conversion switch coupled between the electric motor and the DC power supply and a braking circuit coupled between the electric motor and the DC power supply, the braking circuit including a braking resistor and a braking switch, and a controller in operable communication with the electric motor, the DC power supply, the at least one conversion switch, and the braking switch. The controller is configured to operate the at least one conversion switch when the electric motor is mechanically actuated such that current flows from the electric motor to the DC power supply and selectively operate the braking switch when a braking parameter of the automotive system exceeds a predetermined threshold. | 04-15-2010 |
20100090626 | ENERGY MANAGEMENT SYSTEM TO IMPROVE EFFICIENCY OF ELECTRIC AND HYBRID DRIVE TRAINS - A propulsion system is provided that includes an electric drive, a first energy storage system electrically coupled to the electric drive through a direct current (DC) link, and a second energy storage system electrically coupled to the electric drive. The propulsion system further includes a multi-channel bi-directional boost converter coupled to the first energy storage system and to the second energy storage system such that the second energy storage system is decouplable from the DC link, wherein the second energy storage system comprises at least one battery coupled in series with at least one ultracapacitor. | 04-15-2010 |
20100090627 | MOTOR DRIVING APPARATUS - A system for driving a motor includes first and second rectifier circuits, a direct current (DC) link circuit, an inverter circuit, a voltage booster circuit, and a switch control circuit. When the motor is at a deceleration state, a micro control unit (MCU) outputs a first charging signal to turn on a switch of a first relay and turn off a switch of a second relay, a regenerative current from the motor is charged into a storage capacitor. Before the motor is in an acceleration state, the MCU outputs a second charging signal to turn on the switch of the second relay and turn off the switch of the first relay, and turn on a boosting switch, an increased voltage of the storage capacitor is charged into another storage capacitor. When a voltage at the DC link circuit reaches a predetermined value, the MCU controls the inverter circuit to accelerate the motor. | 04-15-2010 |
20100097017 | SYSTEM AND METHOD FOR CONTROLLING POWER BALANCE IN AN ELECTRICAL/MECHANICAL SYSTEM - An electrically commutated actuator and control system has a stator and a shaft that is movable with respect to the stator. A plurality of magnets movable with the shaft provide a first magnetic flux, and an electric current in at least one coil defined on the stator provides a second magnetic flux. The second magnetic flux is controlled in response to the first input so that the second magnetic flux has a predetermined phase with respect to the first magnetic flux. The second magnetic flux is controlled in response to the second input so that the phase of the second magnetic flux with respect to the first magnetic flux varies from the predetermined phase. | 04-22-2010 |
20100102762 | POWER CONVERTER - An object of the invention is to provide a power converter that is capable of easily constituting a bidirectional power conversion system, and that can realize power regeneration. In a power converter in which cell power modules U | 04-29-2010 |
20100109581 | SYSTEM AND METHOD FOR ENERGY CAPTURE AND DISTRIBUTION - Systems and methods are provided for capturing and using power generated by the application of an external force or by an inertial force on a vehicle control device that back-drive or forward-drive an actuator coupled to the control device. An actuator is coupled to a control device configured to apply a force related to operation of a vehicle. A bus is configured to conduct power to the actuator. An actuator control system is configured to receive power from a power source via an electrical bus and direct the power to the actuator. The actuator control system is also configured to monitor an actuator power level to determine when the actuator power level does not meet an anticipated power level. When the actuator power level exceeds the anticipated power level, the excess power generated is directed to an energy storage device. When the actuator power level is less than the anticipated power level, supplemental power is distributed from the energy storage device to the bus. | 05-06-2010 |
20100117566 | POWER CONTROL OF A TRANSPORT SYSTEM - The power control of a transport system comprises an electric motor for moving the transport appliance as well as a power supply appliance of the motor, which comprises an intermediate circuit. The power supply appliance of the motor is fitted between the power source and the electric motor. The transport system further comprises a network rectifier, which is fitted between the power source and the intermediate circuit of the power supply appliance of the motor for supplying braking power returning from the motor of the transport appliance to the power source. | 05-13-2010 |
20100117567 | METHOD FOR CONTROL REGENERATIVE BRAKING OF ELECTRIC VEHICLE - A method for controlling regenerative braking of a vehicle includes initiating the regenerative braking, detecting an amount of slip of a wheel during the regenerative braking, if the amount of slip is increasing, reducing a regenerative braking torque, and if the amount of slip is greater than a set value, actuating an antilock brake system and reducing the regenerative braking torque or a hydraulic braking torque continuously until the vehicle is stopped. Alternatively, if the amount of slip is increasing, the regenerative braking torque is not reduced. | 05-13-2010 |
20100141187 | ACTIVE BRAKE UNIT - The invention relates to a circuit arrangement for recirculating the energy produced during the braking of electric motors into a supply system. The object of the invention is to implement the feeding of the energy that can be obtained when braking electric motors to the supply system without the use of an isolating transformer. Said object is solved by a forward branch ( | 06-10-2010 |
20100277110 | ELECTRICAL REGENERATIVE BRAKING - This invention relates to an electrical regenerative brake ( | 11-04-2010 |
20110031908 | KINETIC ENERGY COLLECTION DEVICE - A kinetic energy collection device is mounted on a vehicle body. The vehicle body includes drive disks rotated synchronously with wheels of the vehicle body. The kinetic energy collection device includes transmission units, a lift out unit, electrical generators, and an electrical storage. The transmission units are slidably mounted on the vehicle body and include friction disks. The lift out unit includes a braking controller, a pull rod connected with the braking controller, and connection rods rotatably connect the pull rod to the transmission units. The braking controller drives the pull rod to move in response to user's operations, so as to drive the connect rods to rotate, and thus to drive the friction disks of the transmission units to engage or disengage with the drive disks correspondingly. The transmission units drive the electrical generators to generate power. The electrical storage unit stores power generated by the electrical generators. | 02-10-2011 |
20110057587 | ENERGY-RECOVERY DEVICE IN A VARIABLE SPEED DRIVE - The invention relates to a variable speed drive comprising a direct-current power bus having a positive line ( | 03-10-2011 |
20110074319 | DEVICE FOR CONTROLLING REGENERATION ENERGY IN AN ELECTRONIC MOTOR DRIVE HAVING AN LC FILTER TO REDUCE CONDUCTED EMISSIONS FROM THE MOTOR BACK TO THE VOLTAGE SOURCE - The present invention provides a unique improvement ( | 03-31-2011 |
20110084633 | Glass sheet processing/handling machine - In a glass sheet processing/handling machine, at least one electric motor for powering a respective movable member is powered by a drive having a direct power device connected to an industrial electric power mains; and a rechargeable power device alternative to the direct power device and having a storage block for storing energy produced by the electric motor when decelerating the relative movable member. | 04-14-2011 |
20110115418 | CONSTRUCTION MACHINE HAVING POWER GENERATION FUNCTION - A swing system of a construction machine having a power generation function is provided. The construction machine includes a lower driving structure capable of traveling, an upper swing structure mounted on an upper portion of the lower driving structure and provided with a working device, a swing ring gear fixed to the lower driving structure, a swing ring gear cover fixed to the upper swing structure and engaged with the swing ring gear to perform a rotational operation, a permanent magnet installed on one of the swing ring gear and the swing ring gear cover, and an induction coil installed on the other of the swing ring gear and the swing ring gear cover. Induction current is generated in the induction coil in accordance with the rotational operation of the swing ring gear cover. | 05-19-2011 |
20110121767 | MOTOR DRIVER CIRCUIT AND VACUUM PUMP HAVING THE MOTOR DRIVER CIRCUIT - Provided are a compact and low-cost motor driver circuit capable of achieving an appropriate brake time and restraining heat generated by a regenerative resistance within a specific temperature range without employing a regenerative resistance having a greater capacity, a heat sink, or a FAN generating a larger volume of air, and a vacuum pump having the motor driver circuit. | 05-26-2011 |
20110148333 | REGENERATIVE SWITCHED RELUCTANCE MOTOR DRIVING SYSTEM - Provided is a regenerative switched reluctance motor driving system which allows a motor to have a reduced size and weight and an increased efficiency as well as improved energy recovery efficiency at the time of regenerative braking without using a neodymium magnet. Based on an angular position of a rotor in the motor, a constant current flip-flop circuit | 06-23-2011 |
20110163702 | CONVERTER WITH DISTRIBUTED BRAKE RESISTANCES - A device converts electrical energy into heat in the field of drive voltage technology and/or high voltage technology. The device contains a brake resistance and at least one controllable brake power semiconductor for controlling the conversion, enabling a rapid and economical transformation of effective power into heat as required. To this end, the brake resistance contains a plurality of individual brake resistances that are each part of a bipolar submodule. The submodules are connected in series, form a submodule series connection, and at least partially contain an energy accumulator respectively connected in parallel to an associated individual brake resistance and a controllable brake power semiconductor, which allows the current flow over the respectively associated individual brake resistance in a brake position, and interrupts the current flow over the brake resistance in a normal operating position. | 07-07-2011 |
20110227514 | EDDY-CURRENT MAGNETIC CONTROLLED LOADING DEVICE USED IN A MAGNETIC CONTROLLED POWER GENERATOR - An eddy-current magnetic controlled loading device used in a magnetic controlled power generator, including a frame, an eddy-current magnetic controlled loading device, a flywheel, a rotary axle for supporting the flywheel, and a magnetic controlled device. The eddy-current magnetic controlled loading device includes: a rotor coupled to the rotary axle and positioned in the flywheel, the rotor having a rotor core and several pieces of permanent magnets arranged on outer circumference of the rotor core, the rotary axle being rotatable to drive and rotate the flywheel and the rotor; and a stator fixed on the frame and coaxially disposed outside the rotor. The stator has a stator core and multiple radial projections arranged on inner circumference of the stator core. A gap between crown sections of the projections is smaller than a gap between root sections of the projections, whereby a previously wound coil can be fitted onto the projections. | 09-22-2011 |
20110260660 | SYSTEMS AND METHODS FOR ABSORBING WASTE ELECTRICITY FROM REGENERATIVE BRAKING IN HYBRIDIZED VEHICLES - The invention relates to a system for absorbing electric energy from regenerative braking. The system includes a battery, a thermoelectric module in thermally-conductive contact with the battery, a generator for generating an electric current from regenerative braking, the generator connected to the battery via a first switch and connected to the thermoelectric module via a second switch, and a sensor for measuring a temperature and a charge state of the battery. The system also comprises a controller for activating and deactivating the first switch and the second switch when certain conditions have been met. | 10-27-2011 |
20110266982 | MOTOR CONTROL - A system includes a power supply output sensor that senses an output level of a power supply during active motor control of a motor using the power supply and generates a signal indicative thereof. The motor regenerates energy and the power supply absorbs energy regenerated by the motor. The system also includes a motor controller that, in response to the signal satisfying a predetermined threshold, controls an electrical current supplied to the motor for active control of the motor based on a set of instructions that mitigate increases in the output level of the power supply from the absorption of the energy regenerated in the motor. | 11-03-2011 |
20110298402 | MOTOR DRIVE DEVICE WITH FUNCTION OF SWITCHING TO POWER REGENERATIVE OPERATION MODE - A motor drive device comprising a converter for carrying out a power running operation for supplying power from a three-phase AC power supply to a three-phase AC motor and a power regenerative operation for returning energy generated by the three-phase AC motor to the three-phase AC power supply. The converter has power switching elements, a first power regenerative control unit for controlling an on/off action of the power switching elements at the time of carrying out the power regenerative operation by using pulse width modulation signal whose pulse width changes in accordance with a value indicated by a command signal; a second power regenerative control unit for controlling the on/off action of the power switching elements at the time of carrying out the power regenerative operation in order to generate respective power regenerative currents in a phase representing the maximum electric potential among three phases of the three-phase AC power supply and a phase representing the minimum electric potential among the three phases, and a power regenerative operation switching unit for switching control of the on/off action of the power switching elements at the time of carrying out the power regenerative operation between a control carried out by the first power regenerative a control unit and that carried out by the second power regenerative control unit. | 12-08-2011 |
20110304288 | BICYCLE REGENERATIVE BRAKE CONTROL DEVICE - A bicycle regenerative brake control device is provided for controlling a motor, in relation to a brake mechanism that can be mounted on an electric bicycle in which human-powered driving is assisted by the motor. The bicycle regenerative brake control device basically includes a first control part, a second control part and a switch control part. The first control part controls the motor so as to generate a uniform first regenerative braking force. The second control part controls the motor so as to generate a gradually increasing second regenerative braking force upon determining the brake mechanism shifts from an initial state to a braking state. The switch control part switches to a control performed by the second control part in response to the brake mechanism shifting from the initial state to the braking state while control is being performed by the first control part. | 12-15-2011 |
20110309777 | VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION - Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated. | 12-22-2011 |
20120019176 | POWER SUPPLY SYSTEM AND ELECTRIC POWERED VEHICLE USING THE SAME - If it is determined that excess power is generated based on overcharge information of a power storage device, a controller starts an operation of consuming the excess power by an excessive power consuming circuit. The controller counts elapsed time from the time point when the power consuming operation started, and if the counted elapsed time exceeds a minimum on-time set in advance, switches the excessive power consuming circuit from active to inactive state. The minimum on-time is set based on a pattern that is expected to cause generation of excessive regenerative power from an AC electric motor because of abrupt change in running status of an electric powered vehicle mounting a motor drive system. | 01-26-2012 |
20120068636 | MOTOR DRIVING APPARATUS - When the output of motor reaches or exceeds a predetermined value during acceleration of the motor, the control target value of the DC link voltage which is the voltage of a power storage device is gradually lowered in corresponding relationship to the motor output. When the motor enters a constant speed control mode, the DC link control target value is maintained at a constant level. When the motor enters a deceleration control mode, the DC link control target value is gradually raised in corresponding relationship to the motor output, and regenerative power is recovered by the power storage device and reused in the next control cycle. | 03-22-2012 |
20120068637 | MOTOR DRIVING APPARATUS - During motor acceleration control period that starts at time T | 03-22-2012 |
20120146558 | REDUNDANT BRAKING SYSTEM WITH CONSTANT BRAKING TORQUE AND PRINTING PRESS HAVING THE BRAKING SYSTEM - An electric braking device for printing material processing machines includes at least one electric drive to be braked that is supplied by a power converter in motor operation and is braked by the power converter in generator operation. A control unit switches on a redundant electric braking device in the case of a failure of the power converter by using a switch. The braking device has at least two braking stages, an additional switch for actuation in at least two stages, and at least one brake resistor. In the circuit of the redundant electric braking device, a braking current is measured and the measured value is fed to a comparator for comparing the actual braking current to a desired braking current. A printing press having the braking device is also provided. | 06-14-2012 |
20120181956 | Device for Storing Electrical Energy - The invention relates to a device for storing electrical energy, comprising a plurality of storage cells ( | 07-19-2012 |
20120181957 | ENERGY STORAGE DEVICE AND OPERATING METHOD - In order to store excess kinetic energy, an energy storage device and an operating method are described, in which the kinetic energy can be partially converted into electrical energy by a first electric machine using at least two electric machines arranged on a shaft and can be partially converted into additional kinetic energy, such as rotational energy, by a second electric machine. The method for energy storage of excess kinetic energy provides for converting kinetic energy partially into electric energy and partially into additional kinetic energy, such as rotational energy. | 07-19-2012 |
20120187875 | ELECTRIC POWER CONVERTER OF ELECTRIC ROLLING STOCK - An electric power converter of an electric rolling stock includes: a converter unit (a first electric-power converting unit) that receives a direct-current voltage and outputs a direct-current voltage controlled to a predetermined value; and an inverter unit (a second electric-power converting unit) that is connected to the output side of the converter unit and drives an electric motor. The converter unit includes a converter control unit (a first control unit) that, based on the input voltage thereof, generates an output voltage command that is a control command for controlling the condition of the output voltage of the converter unit. | 07-26-2012 |
20120200243 | POWER CONVERSION DEVICE - Included are a power converter for driving an induction machine, a control unit for controlling the power converter, and a brake force command computing unit for computing a brake force command. The control unit includes a regenerative brake force computing unit. The regenerative brake force computing unit computes a first regenerative brake force that can be determined based on a d-axis current detected value, a q-axis current detected value, a d-axis voltage command, a q-axis voltage command, and speed information and also computes a second regenerative brake force that can be determined based on phase current information signals, the d-axis voltage command, the q-axis voltage command, and the speed information, and then selects any one of the first regenerative brake force and the second regenerative brake force according to the speed information and outputs the selected one to the brake force command computing unit. | 08-09-2012 |
20120206071 | REGENERATIVE BRAKING SAFETY SYSTEM AND METHOD OF USE - A centrifuge includes a regenerative braking safety system including an electrical system reversibly coupled to a power source. A motor is coupled to the electrical system. The motor is capable of driving a rotor using power delivered through the electrical system, and is further capable of supplying the electrical system with recovered energy. The recovered energy is electrical energy converted from kinetic energy of the rotor during regenerative braking of the motor. The safety system includes a power cut-off configured to disable the effect of regenerative braking of the motor when the electrical system is decoupled from the power source. | 08-16-2012 |
20120212161 | ELECTROMECHANICAL DEVICE, MOVABLE BODY, AND ROBOT - An electromechanical device includes a first drive member having a magnetic coil, a second drive member capable of moving relatively to the first drive member, and a control section adapted to drive the magnetic coil and to perform regeneration of energy from the magnetic coil when decelerating the second drive member, and the control section includes a first regeneration mode of setting a first regenerative interval centered on a zero crossing point of an induced voltage caused in the magnetic coil, and performing the regeneration. | 08-23-2012 |
20120235607 | DC BUS BOOST METHOD AND SYSTEM FOR REGENERATIVE BRAKE - Embodiments of the present invention provide novel techniques for using a switched converter to provide for three-phase alternating current (AC) rectification, regenerative braking, and direct current (DC) voltage boosting. In particular, one of the three legs of the switched converter is controlled with a set of pulse width modulation (PWM) control signals so that the input AC phase having the highest voltage is rectified and one of the switches in the two other legs is turned on to allow for added voltage. This switching activity allows for voltage from multiple AC line mains to be combined, resulting in an overall boost of the DC voltage of the rectifier. The DC voltage boost can then be applied to the common DC bus in order to ameliorate voltage sags, help with motor starts, and increase the ride-through capability of the motor. | 09-20-2012 |
20120268045 | METHOD AND APPARATUS FOR BRAKING AN ELECTRIC MOTOR - The invention provides a method and apparatus for braking an electric motor. The apparatus includes an electric motor, an electric generator, and an electrical circuit arrangement capable of connecting the electric generator to the electric motor. The electric generator generates an instantaneous generator electromotive force at substantially equal magnitude and opposite polarity to an instantaneous motor electromotive force present in the electric motor. The electrical circuit arrangement is capable of supplying the instantaneous generator electromotive force to the electric motor. The instantaneous generator electromotive force is supplied in response to connecting the electric generator and the electric motor. The instantaneous generator electromotive force substantially negates the instantaneous motor electromotive force, thereby braking the electric motor. | 10-25-2012 |
20130002176 | DRIVE MOTOR CONTROL SYSTEM AND METHOD FOR A VEHICLE - Disclosed is a system and method for reducing vibrations caused by a motor during braking of a vehicle, More specifically, the disclosed technique detects an actual rotational speed of a drive motor, calculates a target rotational speed of the drive motor by filtering the actual rotational speed, calculates a speed difference between the actual rotational speed and the target rotational speed, calculate an offset value by filtering the speed difference, calculate a speed vibration by deducting the offset value from the speed difference, and reduce the speed vibration of the motor by applying a compensated torque in an opposite direction of the speed vibration based on the calculated speed vibration. | 01-03-2013 |
20130015791 | REGENERATION CONTROL DEVICE OF ELECTRICALLY POWERED VEHICLEAANM HATSUMI; NorihikoAACI Anjo-shiAACO JPAAGP HATSUMI; Norihiko Anjo-shi JPAANM Sano; YoshiakiAACI Okazaki-shiAACO JPAAGP Sano; Yoshiaki Okazaki-shi JPAANM Matsumi; ToshiyukiAACI Nagoya-shiuAACO JPAAGP Matsumi; Toshiyuki Nagoya-shiu JPAANM Sugimoto; TakanoriAACI Tsushima-shiAACO JPAAGP Sugimoto; Takanori Tsushima-shi JPAANM Miyamoto; HiroakiAACI Okazaki-shiAACO JPAAGP Miyamoto; Hiroaki Okazaki-shi JPAANM Hatsuda; YasuyukiAACI Okazaki-shiAACO JPAAGP Hatsuda; Yasuyuki Okazaki-shi JPAANM Hashizaka; AkiraAACI Okazaki-shiAACO JPAAGP Hashizaka; Akira Okazaki-shi JPAANM Watanabe; MasanoriAACI Okazaki-shiAACO JPAAGP Watanabe; Masanori Okazaki-shi JPAANM Ohta; NobuakiAACI Okazaki-shiAACO JPAAGP Ohta; Nobuaki Okazaki-shi JP - A regeneration control device of an electrically powered vehicle includes a motor generator which performs electric power regeneration by braking a driving wheel of the electrically powered vehicle, and a battery to which electric power regenerated by the motor generator is supplied. Monitoring means includes at least one of charging rate detection means configured to detect a charging rate of the battery and voltage value detection means configured to detect a voltage value of the battery. Control means controls the electric power regeneration of the motor generator according to at least one of the charging rate and the voltage value of the battery detected by the monitoring means. The control means is configured to decrease regenerative electric current of the motor generator as at least one of the charging rate and the voltage value is increased. | 01-17-2013 |
20130026956 | INJECTION MOLDING MACHINE - An injection molding machine according to the invention includes a motor, a driver circuit that drives the motor; and a rectifying part that supplies electric power to the driver circuit. A regenerative line for regenerative electric power of the motor is connected to the rectifying part in parallel. A converting part and a harmonics component reducing part are provided in the regenerative line. The converting part converts direct electric power between the driver circuit and the rectifying part into alternating electric power which is input to the harmonics component reducing part. | 01-31-2013 |
20130033203 | THERMAL MANAGEMENT OF COMPONENTS IN ELECTRIC MOTOR DRIVE VEHICLES - Thermal management of various components such as electrical energy storage devices (e.g., batteries, super- or ultracapacitors), power converters and/or control circuits, in electrically powered vehicles may employ active temperature adjustment devices (e.g., Peltier devices), which may advantageously be powered using electrical energy generated by the traction electric motor during regenerative braking operation. Temperature adjustment may include cooling or heating one or more components. The adjustment may be based on a variety of factors or conditions, for instance sensed temperature, sensed current draw, sensed voltage, sensed rotational speed. | 02-07-2013 |
20130033204 | SYSTEM FOR CONTROLLING AN ELECTRICAL DEVICE OF A NACELLE - A control system for controlling an electrical device of a nacelle, the device having at least one element that is movable to a closed position and an open position. The control system includes at least one electromechanical member for actuating the movable element, a unit for electrically driving the electromechanical actuation member, and a controlling and monitoring unit for controlling the electrical drive unit so as to move the movable element to the closed and/or open position. The control system further includes a system for recovering braking power from the electrical drive unit during the movement of the movable element to the closed and/or open position. | 02-07-2013 |
20130038255 | Energy Recapturing Apparatus - An energy recapturing apparatus is disclosed for use with a ceiling fan that includes a housing defining an interior area and having a rotatable fan blade assembly. The apparatus includes a combined motor/generator situated in the housing interior space, the motor/generator being operatively connected to the fan blade assembly to apply energy to rotate the fan blade assembly when energized and to receive kinetic energy from rotation of the fan blade assembly when de-energized. A switch is electrically connected to the motor/generator to selectively energize or de-energize the motor/generator. The motor/generator is configured to generate electricity from the kinetic energy received from the fan blade assembly. An electricity storage device is electrically connected to the motor/generator and configured to store electricity generated by the motor/generator. A controller causes stored electricity to be transferred to the motor/generator upon its activation. | 02-14-2013 |
20130063055 | DRIVE DEVICE FOR RAILWAY VEHICLE - In a drive device for a railway vehicle, in which regeneration braking force is increased by adding the output voltage of a voltage adjustment device to a DC power source voltage, operation of the current control device is started prior to the start of the power running operation or the regeneration operation of the inverter device, and the operation of the current control device is stopped later than the stopping of the power running operation or the regeneration operation of the inverter device. Thereby, the current control device is surely operated at least during the operation period of the inverter device, so that the output voltage of the voltage adjustment device is adjusted by the current control device, to thereby prevent the over-discharge of the energy storage device at the time of power running operation or the overcharge of the energy storage device at the time of regeneration operation. | 03-14-2013 |
20130106323 | Control Device and Method for Controlling an AC Motor | 05-02-2013 |
20130127381 | REGENERATIVE VARIABLE FREQUENCY DRIVE - A regenerative variable frequency drive includes an active converter connected to an inverter. The converter has a filter capacitor, an inductor, two half bridges, bus bars that connect to the inverter and bus capacitors. The converter converts single phase AC power to DC power and DC power to single phase AC power, boosts the AC power, reduces input line harmonics, maintains input current in phase with utility voltage in order to achieve near unity power factor, and maintains constant DC voltage between the bus bars. | 05-23-2013 |
20130127382 | POWER TRANSDUCER - The performance of a power transducer is improved while efficiently using a power semiconductor also by managing the permissible duty factor of the power semiconductor in the regenerative braking circuit provided in the power transducer. The user is allowed to set, through an operation panel provided on the power transducer, the resistance value of the regenerative braking resistor for thermally consuming the rotational energy generated during motor deceleration. The power transducer performs the steps of: calculating the current which flows in the regenerative braking circuit from the resistance value setting; obtaining the generation loss of the power semiconductor in the regenerative braking circuit with the calculated current value; and determining the permissible duty factor of the power semiconductor from the obtained generation loss. | 05-23-2013 |
20130134910 | MOTOR DRIVE APPARATUS HAVING POWER FAILURE DETECTION UNIT FOR DETERMINING PRESENCE OR ABSENCE OF POWER FAILURE - A motor drive apparatus includes a rectifier which converts AC power to DC power and DC power to AC power, an inverter which converts the DC power output by the rectifier to AC power and supplies the AC power to a motor, and which converts regenerative power from the motor to DC power and returns the DC power to the rectifier, a DC voltage detection unit which detects a DC output voltage of the rectifier, an AC voltage detection unit which detects an AC output voltage of the rectifier, a frequency calculation unit which calculates the frequency of the AC voltage; a storage unit which stores as a reference value the DC voltage at the start of the regenerative operation, and a power failure detection unit which determines the presence or absence of a power failure by using the DC voltage, the reference value, and the AC voltage frequency. | 05-30-2013 |
20130154523 | RESISTOR GRID ASSEMBLY - A resistor unit adapted to be used in a resistor grid assembly. The resistor unit includes a supporting element and a resistor element. The supporting element has an aperture formed therein. The resistor element has a body portion and a tip portion at an end, which is adapted to be received in the aperture to mount the resistor element to the supporting element. Further, a tab extends from the end of the resistor element forming a part of the resistor element. The tab is configured to provide a heat shield between the supporting element and the resistor element. | 06-20-2013 |
20130154524 | Motor Control System For Limiting Regenerative Current - A motor control system is provided, including a motor and a control module. The motor operates at a rotational velocity, and creates a regenerative current. The motor has a target field weakening current that is configured for limiting the regenerative current to a threshold value. The control module is in communication with the motor. The control module receives a motor torque command. The control module includes control logic for identifying the target field weakening current based upon the motor torque command and the rotational velocity of the motor. | 06-20-2013 |
20130175954 | DYNAMIC RECONFIGURATION-SWITCHING OF WINDINGS IN AN ELECTRIC MOTOR USED AS A GENERATOR IN AN ELECTRIC VEHICLE - For an electric motor used as a generator in an electric vehicle for dynamic braking, employing a dynamic reconfiguration-switching of motor windings upon the generator exceeding one of a maximum usable constraint of a first rechargeable battery in order to reduce a voltage constant of the electric motor thereby limiting one of a produced voltage and a produced power. | 07-11-2013 |
20130187576 | LOAD DRIVING DEVICE AND INVERTED MOVABLE BODY EQUIPPED WITH SAME - Provided is a load driving device capable of efficiently recovering and using regenerative power and an inverted type movable body equipped with same. The load driving device includes a battery that supplies power to a load when driving the load, and is charged with a part of regenerative power when the regenerative power equal to or higher than a first reference value is generated by the load. The load driving device also includes an internal circuit that consumes at least a part of regenerative power when the regenerative power is generated by the load. | 07-25-2013 |
20130214708 | POWER REGENERATION DEVICE AND POWER CONVERSION DEVICE - A power regeneration device according to an aspect of embodiments includes a voltage detecting unit, a signal processing unit, a phase detecting unit, and a power conversion unit. The signal processing unit generates, by using self-oscillation when the output of an AC detection signal from the voltage detecting unit is stopped due to a power outage, an AC signal whose frequency is the same as that of and whose phase is continued to that of the AC detection signal just before the stop. The phase detecting unit detects the phase of the AC power supply on the basis of the AC signal from the signal processing unit when power is recovered from the power outage. | 08-22-2013 |
20130241449 | APPARATUS AND METHOD OF BRAKING APPLIED IN A LAUNDRY TREATING APPLIANCE - A method of operating a laundry treating appliance to control a rotational speed of a drum to move the laundry within the drum according to a predetermined category of movement. | 09-19-2013 |
20130257323 | MARGIN-BASED BATTERY CHARGE BALANCING - A battery pack management system adjusts the relative state-of-charge of respective battery blocks in a battery pack to equalize (i.e., align, balance or otherwise make similar) the peak battery block voltages (i.e., maximum or “upper peak” battery block voltages when the battery pack is being charged and/or minimum or “lower peak” battery block voltages when the battery is being discharged). Upon detecting an anomalous battery block that exhibits outlier upper and lower peak voltages, the battery pack management system adjusts the relative state of charge of respective battery blocks to center their respective upper and lower peak voltages between operating limits, thus maximizing the operating margin of the battery pack as a whole. | 10-03-2013 |
20130271045 | MOTOR CIRCUIT WITH POWER-OFF BRAKING FUNCTION - A motor circuit with power-off braking function includes a driving unit, a coil unit, and a braking unit. The driving unit includes a plurality of switch arms connected in parallel, with each switch arm having a series contact. The coil unit includes a plurality of coils and a central contact. Each coil includes an end connected to the series contact of one of the switch arms. The other end of each coil is connected to the central contact. The braking unit includes a brake loop switch coupled between the central contact of the coil unit and an end of the switch arms. When power is cut off, a plurality of brake loops is formed to share the transient current during braking. | 10-17-2013 |
20140015456 | VEHICLE POWER SUPPLY DEVICE - In order to prevent elements from being damaged by electrical energy when a regenerative braking force is generated, an electric motor ( | 01-16-2014 |
20140077732 | DEVICE AND METHOD FOR MANAGING THE ELECTRIC BRAKING OF A VEHICLE - A device for managing electric braking power includes a controller and a DC bus with a first pole that connects to a vehicle traction machine, a second pole that connects to a battery, and a connection point. The machine is associated with an inverter that delivers an electric braking power via the DC bus. A dissipation branch is connected to the DC bus at the connection point. The device also includes, on the DC bus between the connection point and the second pole, a current sensor and a charging switch that controls a current that flows on the DC bus from the first pole to the second pole. The controller evaluates a difference between a battery recharge limit current and the current on the DC bus, such that the charging switch is left closed if the current is less than the limit current. | 03-20-2014 |
20140084820 | DEVICE AND METHOD FOR MANAGING THE ELECTRIC BRAKING OF A VEHICLE - A device for managing electric braking power includes a continuous bus, a dissipation branch, a current sensor, a controller, and an electronic charging switch. The bus includes a first pole for connection to a vehicle electric traction machine, a second pole for connection to a battery, and a connection point for connection to the dissipation branch, which includes an electronic dissipation switch connected to a dissipation resistor. The current sensor and the charging switch are positioned on the bus between the connection point and the second pole. The charging switch controls a flow of current over the bus from the first pole to the second pole. When power sent over the bus is greater than a total of power that charging of the battery can absorb and power that the dissipation resistor can dissipate, the controller causes the charging switch to open. | 03-27-2014 |
20140139152 | ELECTRIC ACTUATOR DRIVE DEVICE AND ACTUATOR USING SAME - To bring an actuator driving motor having a malfunction such as failure to a stop in a shorter time without employing a mechanical braking system. The present invention is an electric actuator driver, including: a power supply; an actuator driving motor ( | 05-22-2014 |
20140152201 | ELECTRIC MOTOR CLAMPING SYSTEM - An electric motor system having a power supply, an electric motor connected to the power supply, an object driven by the motor having a range of motion and a substantially neutral position within the range of motion, a power sensor configured to sense power from the power supply, a position sensor configured to sense position of the object in at least a portion of the range of motion, an energy storage, a controller connected to the power supply and the energy storage, wherein the controller is configured to brake the motor as a function of the position sensor, the neutral position and the power sensor. | 06-05-2014 |
20140176025 | ENERGY RETRIEVING DEVICE - An energy retrieving device includes a first rectifier circuit, a direct current (DC) link circuit, a second rectifier circuit, an energy retrieving unit, a motor controller, and a micro control unit (MCU). The MCU includes an energy retrieving control module, to control the energy retrieving unit to work according to control of a processing module. The processing module detects whether a motor deceleration signal is generated by the motor, and controls the energy retrieving control module to make the energy retrieving unit retrieve power when the motor deceleration signal is generated by the motor. | 06-26-2014 |
20140176026 | SYSTEM AND METHOD FOR SYSTEM-LEVEL POWER POINT CONTROL OF A PHOTOVOLTAIC DEVICE - Controlling a photovoltaic system includes providing a photovoltaic device having a variable DC voltage output and a variable DC current output. The photovoltaic device has a combination of a voltage output level and a current output level corresponding to a predetermined, desired power point. A DC power supply is connected in a parallel and/or series combination with the photovoltaic device. A DC load is connected in series to the combination of the DC power supply and the photovoltaic device such that the load is powered by the combination. A characteristic of the DC power supply is adjusted such that the voltage output and the current output of the photovoltaic device substantially match the voltage output level and the current output level corresponding to the desired power point. | 06-26-2014 |
20140210384 | REGENERATIVE CONTROL SYSTEM OF A VEHICLE - A regenerative control system of a vehicle is constructed such that in a system which generates electrical energy of a low voltage suitable for a low voltage system circuit and electrical energy of a high voltage suitable for the high voltage system circuit in an alternate manner by making use of kinetic energy of a vehicle when the vehicle is in a deceleration running state, a ratio between a period of time to generate the low voltage electrical energy and a period of time to generate the high voltage electrical energy is decided in accordance with a deceleration required of the vehicle, and a power generation voltage is duty controlled according to the ratio thus decided. | 07-31-2014 |
20140239858 | Movement control system for a drilling plant - A movement control system for a drilling plant includes a first hydraulic circuit with an inlet duct and an outlet duct for a working fluid, a pumping device of reversible type promoting the circulation of the fluid, first electric machine mechanically coupled to the pumping device to promote circulation of the fluid in the first hydraulic circuit, wherein the first electric machine is connected to an electric circuit connectable to the net or to an electric accumulator. The first electric machine selectively operates as an electric motor to promote circulation of the fluid in a first sense and to drive the actuating means during the rise of the drilling head, and as an electric generator upon fluid flow in a second, opposite sense during the lowering of the drilling head to inject in the network or in the accumulator the electric power generated by the first machine. | 08-28-2014 |
20140292236 | BIDIRECTIONAL MOTOR DRIVER LOW VOLTAGE POWER SUPPLY (LVPS) - A bidirectional low voltage power supply (LVPS) for providing power to motor drive electronics. The bidirectional LVPS includes two simple, discrete converters. A first converter is used to provide power to an output and the second converter recycles power from the output to the power source. The first converter powers the drive electronics which drives the motor. During an operating process, the first converter shuts off and the second converter turns on to recycle power from the motor to the power source. | 10-02-2014 |
20150061550 | Method for electrically regenerating an energy store - A method for electrically regenerating an electrical energy store in a motor vehicle which includes a recuperation device and/or other energy-saving devices, including the following: based on information concerning an upcoming travel route, it is ascertained whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route, and when this is the case: a first energy loss is determined which occurs during the electrical regeneration; a second energy loss is determined which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration; the first energy loss and the second energy loss are compared, and a regeneration is carried out only when the second energy loss is greater than the first energy loss. | 03-05-2015 |
20150102752 | BRAKING SYSTEM FOR VEHICLE - A braking system for a vehicle is provided. The braking system includes a traction motor configured to provide traction during a driving mode. The traction motor is further configured to act as a generator during a braking mode. A resistor grid is configured to dissipate power from the traction motor in the form of waste heat. A thermoelectric module is interfaced with the resistor grid. Further, the waste heat provides a high temperature heat source for the thermoelectric module. A low temperature heat source is interfaced with the thermoelectric module. A temperature difference between the high temperature heat source and the low temperature heat source produces a thermoelectric power. | 04-16-2015 |
20150291037 | MOTOR/ENERGY GENERATOR AND ENERGY STORAGE DEVICE COMBINATION - A number of variations may include a motor/energy generator and energy storage device combination. | 10-15-2015 |
20150346696 | INTENTIONALLY INCREASING A NON-TORQUE OUTPUT OF AN ELECTRIC MACHINE IN AN ELECTRIC VEHICLE - An example method includes operating an electric machine to produce a torque output and a non-torque output. The method maintains the torque output and intentionally increases the non-torque output to produce a desired condition in an electric vehicle. | 12-03-2015 |
20150365021 | CONVERTER AND METHOD FOR OPERATING SAME - A converter having at least one converter module, which includes a primary circuit connected to a power supply, a secondary circuit connected to a load, and a DC link circuit having an intermediate circuit capacitance, is operated according to the disclosed method by controlling the primary circuit such that the intermediate circuit voltage dropping across the intermediate circuit capacitance is adjusted to a predetermined desired voltage value which depends on the direction of the power flow in the secondary circuit. | 12-17-2015 |
20150372622 | METHOD AND INTEGRATED MOTOR DRIVE POWER ELECTRONICS SYSTEM WITH IMPROVED EFFICIENCY - Embodiments of an integrated motor drive power electronics system are generally described herein. In some embodiments, the integrated motor drive power electronics system includes an active line filter (ALF) configured to control and regulate current drawn from an input power source and to attenuate current ripple fed back to the input power source, an energy storage capacitance coupled to an output of the active line filter, and a bidirectional low voltage power supply (LVPS). In some embodiments, the bidirectional LVPS may provide regulated power to a load and may selectively recycle power back to the input power source and regulate voltage at the load to a predetermined output voltage. In some embodiments, the energy storage capacitance may serve as a local input power source for higher power motor drive electronics and the bidirectional LVPS. | 12-24-2015 |
20160043667 | MOTOR DRIVE APPARATUS - A motor drive apparatus that controls a current flowing through a coil of a motor, including a comparing section that compares the current flowing through the coil to a control current input thereto; an operation selecting section that selects an operational state according to a comparison result of the comparing section; a driving section that receives a designation signal designating a current mode and a stop mode, drives the coil in the operational state selected by the operation selecting section when the designation signal designating the conductive mode is received, and drives the coil in the braking state when the designation signal designating the stop mode is received; and a setting section that controls a start of the designation signal designating the stop mode or a start of a period during which the control current is zero. | 02-11-2016 |
20160126869 | REGENERATIVE RECTIFIER FOR A MOTOR CONTROL DRIVE - A system, and associated method, fbr controlling a motor drive coupled to an AC power source in a condition wherein the motor drive is generating a regenerative current. The system includes a plurality of electronic switching devices structured to be provided in anti-parallel connection with a plurality of rectifier diodes of the motor drive, and a controller structured and configured to receive a number of phase voltages from the AC power source, determine a grid angle for the AC power source using the number of phase voltages, and generate a number of control signals for controlling the electronic switching devices using the grid angle when the motor drive is generating the regenerative current. | 05-05-2016 |
20160176296 | SYSTEMS AND METHODS FOR REGENERATIVE DYNAMIC BRAKING | 06-23-2016 |
20160190959 | REGENERATIVE BRAKING CONTROLLING SYSTEM AND METHOD - The regenerative braking controlling system includes an armature current sampling module, a calculating module, and an adjusting module. The calculating module includes a power calculating unit, an optimum phase angle calculating unit, an optimum regenerative current calculating unit, and a sub-optimum regenerative current calculating unit. The armature current sampling module samples current of the three phase armature windings. The power calculating unit determines a relationship between a regenerative power and a phase angle of the armature currents. The optimum phase angle calculating unit calculates an optimum phase angle, and obtain a phase regenerative path based on the optimum phase angle. The optimum regenerative current calculating unit calculates an optimum regenerative current limit point. The sub-optimum regenerative current calculating unit calculates a sub-optimum regenerative current limit point. The adjusting module adjusts regenerative current according to the optimum regenerative current limit point and the sub-optimum regenerative current limit point. | 06-30-2016 |