| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318504000 |
Voltage control
| 123 |
| 318503000 |
Frequency or pulsation control
| 121 |
| 318495000 |
Plural, diverse or diversely controlled, armature or primary windings
| 45 |
| 318519000 |
By armature or primary circuit-making and/or breaking
| 21 |
| 318500000 |
Plural sources of voltage (including counter e.m.f. cells)
| 12 |
| 318508000 |
Impedance-controlled | 5 |
| 20090108790 | Control structure of an electric fan - An electric fan includes a motor driving circuit, a controller, and a stepless speed-change device; the motor driving circuit is electrically connected to a blades-driving motor of an electric fan as well as a power circuit; the controller is electrically connected to the motor driving circuit while the stepless speed-change device is electrically connected to the controller therefore the rotational speed of the blades-driving motor of the electric fan can be adjusted in a stepless manner. | 04-30-2009 |
| 20120007534 | ROTATION SPEED CONTROL DEVICE FOR A HEAT-DISSIPATING FAN - A rotation speed control device for a heat-dissipating fan includes an impedance unit, a regulating unit, and a driving circuit. The impedance unit includes a first resistor having a first end connected to a first node, and a second end connected to a second node, and a second resistor having a third end connected to the second node, and a fourth end. The regulating unit is connected to the impedance unit and is configurable for varying an effective impedance of the impedance unit to adjust magnitude of current flowing through the impedance unit. The driving circuit is connected to the impedance unit and is adapted to control rotation speed of the heat-dissipating fan according to the magnitude of the current flowing through the impedance unit. | 01-12-2012 |
| 20140077745 | DRIVE CONTROL DEVICE AND DRIVE CONTROL METHOD - The invention provides a drive control device that comprises: inverters that are connected to a motor; a variable resistive element that is connected between the motor and each of the inverters; a current/voltage detection device connected between the motor and each of the inverters; and a controller that, when detecting a fault of an inverter that drives the motor based on a detection signal from the current/voltage detection device, gradually increases a resistance value of a variable resistive element provided between the faulty inverter and the motor at a velocity of a resistance variation such that a surge voltage has a voltage value for which the variable resistive element and the motor are not damaged, and executes drive control of the motor by a normal inverter other than the faulty inverter. | 03-20-2014 |
| 20090179606 | Circuit Arrangement and Method for Controlling an Electrical Consumer - The invention relates to a circuit arrangement for controlling an electrical consumer (M), said arrangement being provided with a bridge circuit which comprises four electronic switches (V | 07-16-2009 |
| 20130257335 | METHOD FOR OPERATING AN ELECTRIC MACHINE - A method and a circuit system for operating an electric machine are presented. The method is carried out in particular in a starting phase, a current being limited using a controllable resistor, the controllable resistor being implemented by at least one semiconductor switch, which is controlled using a clocked signal, and the signal being set in such a way that in shutdown phases, the at least one semiconductor switch is not completely shut down. | 10-03-2013 |
| 318501000 |
By shunting armature or primary winding | 4 |
| 20110221376 | POWER SUPPLY DEVICE - To provide a power supply device which can reduce energy loss caused due to the forward-direction voltage of a flywheel diode. In a load circuit for subjecting an electronic switch T | 09-15-2011 |
| 20120229068 | INVERTER - An inverter, particularly for supplying energy to a three-phase motor (3) of a motor vehicle, where the inverter comprises a half bridge ( | 09-13-2012 |
| 20130241459 | LOSSLESS SNUBBER DRIVE FOR A PERMANENT MAGNET SYNCHRONOUS MOTOR - A loss-less snubber drive for a permanent magnet motor. The motor system includes a first motor phase with a primary winding and an auxiliary winding. A controllable switch is positioned between the primary winding and ground such that current passes through the primary winding to ground when the controllable switch is closed. A capacitor is configured to accumulate charge when the controllable switch is opened. The auxiliary winding is configured such that charge stored by the capacitor causes current to pass through the auxiliary winding when the controllable switch is closed. | 09-19-2013 |
| 20150303849 | METHOD FOR OPERATING AN ELECTRIC MOTOR AND CORRESPONDING ELECTRIC MOTOR DEVICE - A method for operating an electric motor connectable via a switching device to a current source and connected in parallel with a freewheeling device, the switching device having control applied to it at a specific activation ratio within each working cycle to establish a desired effective operating voltage of the electric motor, so that in at least one operating mode each working cycle is includes an activation and a freewheeling time period. The freewheeling device has a freewheeling transistor and a freewheeling diode, connected in parallel with the transistor and reverse-biased as to the current source; and control is applied to the freewheeling transistor in the freewheeling time period as follows: identifying the freewheeling voltage dropping across the electric motor; and switching the freewheeling transistor for a specific switching time period if the freewheeling voltage is different from zero, particularly less than zero. Also described is an electric motor device. | 10-22-2015 |
| 318502000 |
Variable length or tapped armature winding | 2 |
| 20130293176 | Circuit and Method for De-Energizing a Field Coil - A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps. | 11-07-2013 |
| 20160056748 | Dynamic Power Control for Induction Motors - An example electric motor including a conductive winding, a switching device, a rotor, and a controller is disclosed. The switching device is configured to selectively energize, by an AC source, a first portion of the conductive winding in a first state and a second portion of the conductive winding in a second state. The conductive winding generates a magnetic field having a first strength in the first state and a second strength in the second state. The rotor magnetically interacts with the magnetic field such that a torque is applied to the rotor. The amount of torque applied is related to the strength of the magnetic field. The controller is configured to: (i) determine a metric indicative of a load condition of the electric motor; and (ii) based on the determined metric, cause the switching device to switch between the first state and the second state one or more times. | 02-25-2016 |
| 318505000 |
By means to space-discharge devices | 2 |
| 20090015186 | SUPPRESSING PHASED MOTOR VOLTAGE TRANSIENTS ON DISCONNECT - A clamping circuit is included in a phased motor control circuit, particularly on an electrical connection connected to at least one electrostatic discharge cell and/or the driver control electronics of the phased motor control circuit. The clamping circuit triggers when a voltage that exceeds a clamping turn-on threshold occurs on the electrical connector, sourcing or sinking the discharge current so as to protect the electrostatic discharge cells and/or driver control electronics from destruction by said discharge current. | 01-15-2009 |
| 20160380573 | MOTOR CONTROL APPARATUS, MOTOR CONTROL SYSTEM, MOTOR CONTROL METHOD - A motor control apparatus for controlling driving of a motor includes an inverter which supplies power to a motor having a position detector, and circuitry which controls power conversion of the inverter based on at one or more predetermined control parameters, determine a type of the motor based on a signal received from the position detector of the motor, and control notification of setting confirmation of one or more of the predetermined control parameters in accordance with the type of the motor. | 12-29-2016 |
| Entries |
| Document | Title | Date |
|---|
| 20080224644 | METHOD CAPABLE OF CONTROLLING INITIAL CURRENT FOR DRIVING A MOTOR - A method capable of controlling initial current value for driving a motor includes following steps: (a) an output reference level of a driving unit being connected to a motor coil set to operate a motor constituted with the motor coil set; (b) a magnetic pole change being detected with a sensing unit during the motor being in operation and an output signal being produced by the sensing unit; (c) determining if the motor is in a state of operation by means of whether a control unit receives the output signal or not; and (d) the control unit restricting the reference level of the driving unit being output to the motor coil set while the output signal of the sensing unit is received by the control unit. | 09-18-2008 |
| 20080297088 | Fuel/electric drive system - A fuel/electric drive system having an internal combustion engine is disclosed, having a generator which is driven by the internal combustion engine and has a first stator winding set, having a first rectifier which is connected to the first stator winding set at the AC voltage end and to a first DC voltage circuit at the DC voltage end, and having a first inverter which is connected to the first DC voltage circuit at the DC voltage end and to a drive motor at the AC voltage end. In order to increase the robustness and availability of the fuel/electric drive system, the generator has a second stator winding set, with a second rectifier being connected to the second stator winding set at the AC voltage end and to a second DC voltage circuit at the DC voltage end, and a second inverter being connected to the second DC voltage circuit at the DC voltage end and to the drive motor at the AC voltage end. | 12-04-2008 |
| 20090039816 | Assembly Comprising a Three-Phase Machine and a Frequency Converter - A system is provided that furnishes expert procedural guidance based upon patient-specific data gained from surgical instruments incorporating sensors on the instrument's working surface, one or more reference sensors placed about the patient, sensors implanted before, during or after the procedure, the patient's personal medical history, and patient status monitoring equipment. Embodiments include a system having a surgical instrument with a sensor for generating a signal indicative of a property of a subject tissue of the patient, which signal is converted into a current dataset and stored. A processor compares the current dataset with other previously stored datasets, and uses the comparison to assess a physical condition of the subject tissue and/or to guide a procedure being performed on the tissue. | 02-12-2009 |
| 20090051309 | Process for driving an electric machine and driver system therefor - A method for operating an electric machine with a driver system is provided, in which an operating variable of the electric machine and/or of the driver system is monitored. The validity of the input variables is checked with regard to their checksum and whether the input variables are up-to-date, and the permissibility of an actual moment (Mist | 02-26-2009 |
| 20090108789 | Programmable Motor Drive - A system comprises host logic and a programmable motor drive coupled to the host logic and configured to drive a motor. The programmable motor drive comprises a plurality of H-bridge circuits and the programmable motor drive is programmable to cause any two or more H-bridge circuits to be operated in parallel. | 04-30-2009 |
| 20090128078 | MOTOR AND MOTOR SPEED CONTROLLING SYSTEM - A motor and a motor speed control system are disclosed. Two power signal lines and one feedback/speed-control signal line are coupled between a control device and the motor. The two power signal lines electrically connect the control device to the motor. The feedback/speed-control signal line bi-directionally transmits signals coming from the control device to the motor and from the motor to the control device. | 05-21-2009 |
| 20090140682 | Motor control unit, motor control method and image forming apparatus - Time information indicates time required for reflecting a speed control indicating value actually on the rotation speed of the motor, the speed control indicating value being read by a motor driving part and then, being reflected on the rotation speed of the motor by the motor driving part. the speed control indicating value is generated based on the time information and the rotation speed information. The speed control indicating value is read at a period which is based on the time information for actually driving the motor. | 06-04-2009 |
| 20090206785 | WAVEFORM CURRENT MONITOR USING RDSON OF LOW-SIDE BRIDGE FET - An apparatus for monitoring current for a motor drive including at least high-side and low-side switching transistors includes a driver circuit for driving a gate of the low-side switching transistor. First circuitry measures a drain to source voltage across the low-side switching transistor and generates a voltage output responsive thereto. Second circuitry has a first state of operation that samples the voltage output of the first circuitry when the low-side switching transistor is turned on and has a second state of operation to sample the voltage output of the first circuitry when the low-side switching transistor is turned off. The second circuitry further generates a monitored output current responsive to the sampled voltage output. | 08-20-2009 |
| 20090243529 | MOTOR DRIVING CIRCUIT AND METHOD THEREOF - A motor driving circuit includes a control device, a detection module and a driving module. The control device is controlled by a control signal and is coupled to a motor. The control device includes a first terminal, a second terminal and a control terminal, wherein a driving current flowing through the motor flows through the first terminal and the second terminal. The detection module is used for detecting a voltage of the first terminal. The driving module is used for generating the control signal to control the driving current, wherein the detection module adjusts the driving capability of the driving module, thereby adjusting a slew rate of the control signal. | 10-01-2009 |
| 20100060223 | PERMANENT MAGNET ROTATING ELECTRICAL MACHINE AND PERMANENT MAGNET MOTOR DRIVE SYSTEM - A permanent magnet rotating electrical machine capable of conducting a variable speed operation at high output in a wide range from low speed to high speed and improving efficiency and reliability in a wide operating range. Two kinds of permanent magnets having different shapes or different magnetic characteristics are embedded in a rotor core, to form a magnetic pole. The permanent magnets arranged at the magnetic pole include a permanent magnet whose product of coercive force and thickness along a magnetizing direction is small and the permanent magnet whose product of coercive force and thickness along the magnetizing direction is large. A magnetic field created by passing a current to an armature coil for a short time is used to irreversibly magnetize the permanent magnet whose product of coercive force and thickness along magnetizing direction is small, thereby changing a total linkage flux amount, and a positive d-axis current is passed when torque is large. | 03-11-2010 |
| 20100079096 | HUMAN INTERFACE MODULE FOR MOTOR DRIVE - A power electronics device with an improved human interface module (HIM) is provided. More specifically, a motor drive is provided that includes a HIM with a portable memory device that stores the programming configuration of the motor drive. The improved HIM with portable memory enables improved techniques for quickly and efficiently updating the programming configuration of one or several motor drives. | 04-01-2010 |
| 20100079097 | GENERIC MOTOR CONTROL SYSTEM - A method for controlling the operation of a motor utilizing a generic motor control module. The method includes sampling at least one motor operating criterion during operation of the motor and executing a generic control algorithm at a predetermined periodic interval. Execution of the algorithm provides a firing angle, duty cycle, or other suitable control function solution for an electronic valve for each periodic interval, thereby controlling the behavior of the motor. Additionally, the method includes firing the electronic valve at the calculated timing during each periodic interval such that the motor functions in accordance with desired motor operational parameters. | 04-01-2010 |
| 20100079098 | GENERIC MOTOR CONTROL SYSTEM - A method and apparatus for controlling a plurality of different motors used in a corresponding plurality of power tool applications requiring different operational characteristics. In one implementation a method involves the use of a single universal control module to store a generic, non-application-specific control algorithm. The generic, non-application-specific control algorithm has at least one programmable constant. The programmable constant is selected to transform the generic, non-application-specific control algorithm into an application-specific control algorithm. The programmable constant represents a function parameter relating to a specific functionality of a specific, selected motor used in a specific, selected motor application to implement a phase control over the specific, selected motor. | 04-01-2010 |
| 20100090637 | MOTOR SPEED CONTROLLER - A motor speed controller and a method of controller a speed of a motor are provided. The system and method include a motor and a motor controller that monitors operation of the motor based on electromotive force (EMF) conditions of the motor. The motor controller cuts a voltage to the motor, measures an electromotive force (EMF) of the motor at a predetermined time after the cutting of the voltage to the motor, and compares the measured electromotive force (EMF) to a table. | 04-15-2010 |
| 20100141196 | GAIN VALUE CONTROL SYSTEM AND METHOD - A control system for controlling a plurality of gain values of a driver includes a control device, a driver, a motor, and a plurality of sensors. The control device stores a plurality of gain values for the driver, and a plurality of encoded values. One or more of encoded values is corresponding to each of the plurality of gain values. The plurality of sensors detect a plurality of working parameters of the motor to generating a plurality of induction signals. The control device generates an encoded value according to the plurality of induction signals to select a gain value for the driver. | 06-10-2010 |
| 20100308764 | MOTOR CONTROLLER AND ELECTRIC TOOL HAVING THE SAME - A motor controller comprises a processor selectively outputting an on-signal to either one of an upper arm switching element and a lower arm switching element based upon a detected position by the position sensor, gate drivers inputting a driving voltage to the gates of the switching elements by shifting a level of the on-signal from the processor to the upper arm switching element and a bootstrap capacitor configured to be charged while the upper arm switching element is turned off and to behave as a voltage supply for the gate driver while the upper arm switching element is turned on. The processor is configured to reduce a set duty ratio when the set duty ratio is equal to or larger than a predetermined value (e.g. 80 percents) and a rotational position of the motor does not change for a first predetermined time. This motor controller can prevent the switching element from a burnout even if the motor is locked. | 12-09-2010 |
| 20110006718 | INVERTER DEVICE - There is provided an inverter device that is small in size and has high durability against long-term use with vibration. A power substrate | 01-13-2011 |
| 20110043153 | ELECTRONIC ORBIT CONTROL FOR SAWS - A power saw having a reciprocating blade, including a housing having a handle portion for holding the saw; a variable speed motor in the housing for driving the reciprocating blade; a mechanism configured to move the reciprocating blade in a non-linear path; an electronic controller for controlling the operation of the motor; a trigger switch configured to provide an electrical signal to the controller that is proportional to the amount of travel that the switch is moved, wherein the signal causes the controller to operate the motor through a range of operating speeds; and a mode switch operatively connected to the controller and including a first mode providing normal operating speeds responsive to the trigger switch being selectively moved through its range of travel, and a second mode wherein the operating speeds are within the range of about 50% to about 80% of the normal operating speeds. | 02-24-2011 |
| 20110221374 | DISCHARGING CONTROL DEVICE FOR ELECTRIC POWER CONVERSION SYSTEM - A discharge control device in an electric power conversion system mounted to a motor vehicle turns off a relay in order to instruct an electric power conversion circuit to supply a reactive current into a motor generator, and thereby to decrease a capacitor voltage to a diagnostic voltage. After this process, the discharge control device outputs an emergency discharging instruction signal dis in order to turn on both power switching elements at high voltage side and a low voltage side in the electric power conversion circuit. This makes a short circuit between the electrodes of the capacitor in order to discharge the capacitor, and executes a discharging control to detect whether or not an emergency discharging control is correctly executed and completed. The discharge control device detects whether or not the electric power stored in the capacitor is discharged on the basis of the voltage of a voltage sensor. | 09-15-2011 |
| 20120019184 | DEVICE AND METHOD FOR POWER-SAVING DRIVING OF DEVICE HAVING SAME LOAD PATTERN - A power-saving driving device is provided for a same load pattern device | 01-26-2012 |
| 20120056570 | SYSTEM AND METHOD FOR COLLECTING CHARACTERISTIC INFORMATION OF A MOTOR, NEURAL NETWORK AND METHOD FOR ESTIMATING REGIONS OF MOTOR OPERATION FROM INFORMATION CHARACTERIZING THE MOTOR, AND SYSTEM AND METHOD FOR CONTROLLING MOTOR OPERATION USING THE CHARACTERISTIC INFORMATION, THE NEURAL NETWORK, OR BOTH - A method for collecting operational parameters of a motor may include controlling the energization of a phase winding of the motor to establish an operating point, monitoring operational parameters of the motor that characterize a relationship between the energization control applied to the motor's phase winding and the motor's response to this control, and collecting information of the operational parameters for the operating point that characterizes the relationship between the applied energization control and the motor's response. The collected information characterizing the relationship between the applied energization control and the motor's response may be employed by a neural network to estimate the regions of operation of the motor. And a system for controlling the operation of motor may employ this information, the neural network, or both to regulate the energization of a motor's phase winding during a phase cycle. | 03-08-2012 |
| 20120068654 | CONFIGURABLE MULTI-AXIS ELECTRIC DRIVE SYSTEM CONCEPT - The present invention includes techniques for configuring an electric drive module designed for various multi-axis drive system configurations. Embodiments include techniques for integrating a three phase dual converter with a diode bridge and drive controller within a single drive module. Further integrating the diode bridge directly within the drive module may result in an integrated, modular building block for multiple electric drive system configurations. In some embodiments, multiple electric drive modules are connected by a DC bus to form a system configured for higher energy efficiency. | 03-22-2012 |
| 20120068655 | OUTPUT FILTER AND MOTOR DRIVE SYSTEM INCLUDING THE SAME - A motor drive system includes: a three-phase motor; a power conversion device that supplies power for driving the three-phase motor; and an output filter that is arranged between an output of the power conversion device and the three-phase motor and has a configuration in which a setting value of a filter resonance frequency is selectable and changeable. | 03-22-2012 |
| 20120112679 | FAN ROTARY SPEED CONTROLLING DEVICE - A fan rotary speed controlling device includes a first signal generating circuit, a second signal generating circuit, a pulse width modulation (PWM) circuit and a switching circuit. The first signal generating circuit receives a real frequency signal and a target frequency signal, and generates a first signal according to the real frequency signal and the target frequency signal. The second signal generating circuit generates a second signal according to the first signal. The PWM circuit generates a PWM signal according to the second signal. The switching circuit is electrically connected with the PWM circuit and outputs a control signal to control the rotary speed of the motor. Hence, the fan rotary speed controlling device boosts the accuracy and the stability of the fan rotary speed. | 05-10-2012 |
| 20120169265 | CONTROL APPARATUS AND MEASURING APPARATUS - A control apparatus for controllably driving a drive mechanism which displaces a movable member, includes: an electric-current detecting unit configured to detect electric current for driving the drive mechanism; a speed control unit configured to set a target electric-current according to a drive speed at which the drive mechanism is caused to drive the movable member; and an electric-current control unit configured to multiply, by an integral gain and a proportional gain, an electric-current deviation between a target electric-current and a detection electric-current detected by the electric-current detecting unit to set output electric-current to be output to the drive mechanism, wherein the current control unit changes at least one of the integral gain and the proportional gain according to the drive speed of the drive mechanism. | 07-05-2012 |
| 20120249040 | CONTROLLER CHIP WITH SIGNAL SWAPPING CAPABILITY FOR CONTROLLING MOTOR DEVICE AND RELATED METHOD THEREOF - A controller chip for controlling a motor device includes a first input port, a first output port, a controller, and a signal processing circuit. The first input port is arranged to receive a motor control input. The first output port is arranged to generate a motor control output. The controller is arranged to generate an output signal according to an input signal, and has a second input port for receiving the input signal and a second output port for outputting the output signal. The input signal is derived from the motor control input, and the motor control output is derived from the output signal. The signal processing circuit has a target interconnection configuration selected from a plurality of candidate interconnection configurations each including an interconnection between the first input port and the second input port and an interconnection between the first output port and the second output port. | 10-04-2012 |
| 20120268052 | MOTOR CONTROL DEVICE AND METHOD OF CONTROLLING THE SAME - A motor control device including a preprocessing portion calculating a counter electromotive force using an analog operation is provided. The motor control device may include an offset compensation portion and a counter electromotive force measuring portion. The offset compensation portion receives a three-phase current signal from the motor and compensates an offset of the three-phase current signal. The counter electromotive force measuring portion receives the compensated current signal and a three-phase voltage signal from the motor and calculates the received current signal and the received voltage signal using an analog operation to provide the calculated result. | 10-25-2012 |
| 20120286716 | CONTROL DEVICE FOR ROTATING ELECTRIC MACHINE AND METHOD OF CONTROLLING ROTATING ELECTRIC MACHINE - An ECU executes a program including a step of detecting the rotation speed of a motor, a step of determining the diffusion width of carrier frequency, a step of determining the carrier frequency based on the determined diffusion width, a step of generating a carrier signal based on the determined carrier frequency, and a step of executing pulse width modulation based on an AC voltage command and the carrier signal. | 11-15-2012 |
| 20130063067 | POWER SEMICONDUCTOR MODULE, ELECTRIC-POWER CONVERSION APPARATUS, AND RAILWAY VEHICLE - A pair of elements that includes a Si-MOSFET and a Si-FWD connected in inverse parallel and operates as a positive side arm of an electric-power conversion apparatus and a pair of elements that operates as a negative side arm of the electric-power conversion apparatus are provided, where the first and second pairs of elements are accommodated in one power semiconductor module to compose a 2-in-1 module, and terminals are included which enables series connection of the pairs of elements. | 03-14-2013 |
| 20130106335 | MOTOR DRIVE AND A METHOD OF CONFIGURING A MOTOR DRIVE | 05-02-2013 |
| 20130113407 | CONTROL SYSTEM WITH REMOTE DRIVERS - A control system for a transmission includes a transmission control module having a processor configured to determine an output torque command and having a pulse width modulation (PWM) switch configured to generate a PWM signal at least partially representative of the output torque command. A network is in communication with the transmission control module and is configured to receive and transmit the PWM signal. A driver is integrated with the electromagnetic actuator and is in communication with the network. The driver is configured to receive the PWM signal and convert the PWM signal into a drive current that enables the electromagnetic actuator to fulfill the output torque command. | 05-09-2013 |
| 20130113408 | METHOD FOR SUPPRESSING SPEED RIPPLE BY USING TORQUE COMPENSATOR BASED ON ACTIVATION FUNCTION - Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error ω | 05-09-2013 |
| 20130200836 | MOTOR CONTROL DEVICE, IMAGE FORMING APPARATUS, MOTOR CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - A motor control device includes a motor lock state determining unit configured to determine whether a motor is in a rotation lock state; a position hold state determining unit configured to determine whether the motor is in a position hold state; a lock detection invalidation determining unit configured to invalidate the determination of the lock state when the motor is in the position hold state and when a predetermined condition is satisfied; a position error correction unit configured to correct an error of a target stop position of the motor when the determination of the lock state is invalidated; and a motor control unit configured to change a rotation direction of the motor in a time shorter than a time in which the motor lock state determining unit determines the lock state when the motor is in the position hold state after the error is corrected. | 08-08-2013 |
| 20130293174 | ELECTRIC DRIVING APPARATUS - A valve control apparatus is provided with a valve, a shaft supporting the valve, an end-gear of an actuator driving the valve. The shaft is press-inserted into the end-gear. A stopper disposed on the shaft regulates a valve operation range. The end-gear can engage with the middle gear of the reduction-gears mechanism even in out of the gear-operation-angle range. When a rotation angle sensor detects a rotation angle of the end-gear in out of the gear-operation-angle range, it is determined that a malfunction occurs in a rotation-force-transmitting path. | 11-07-2013 |
| 20140001998 | MOTOR CONTROLLER | 01-02-2014 |
| 20140055069 | ELECTRIC EXCITATION PERMANENT MAGNET SWITCH, ELECTRIC EXCITATION PERMANENT MAGNET SWITCH RELUCTANCE MOTOR AND ELECTRIC EXCITATION METHOD - Two magnetic poles of a permanent magnet of a permanent magnet switch and the two ends of an iron core wound with an excitation coil are connected to each other with the soft magnet having a salient pole. A motor uses the switch as the basic component of the stator and rotor, with two magnetic salient poles of each component being arranged axially, wherein the salient pole of the stator component and that of the rotor component are arranged in an opposite manner with an air gap, the excitation coil of the stator component and the rotor component at the symmetric axis position is taken as a phase line to access an excitation control power supply after serial connection or parallel connection. Electric excitation is carried out on the combined motor formed by shaft connection and rotation dislocation among single motors and the stator component in a bi-phase way simultaneously. | 02-27-2014 |
| 20140055070 | SHIELDING STRUCTURE FOR POWER CONVERSION SYSTEM AND METHOD THEREOF - An electromagnetic shielding structure includes a first shielding material disposed at a first location with respect to at least one radiation source and a second shielding material attached with the first shielding material by fastening means. The second shielding material is disposed at a second location with respect to the at least one electromagnetic radiation source so as to define a predetermined gap between the first shielding material and the second shielding material. The first shielding material shields at least part of first frequency electromagnetic radiations generated from the at least one electromagnetic radiation source and penetrating through the second shielding material and the predetermined gap. The second shielding material shields at least part of second frequency electromagnetic radiations generated from the at least one electromagnetic radiation source. | 02-27-2014 |
| 20140070750 | Hybrid Motor - A hybrid motor, having a rotor simultaneously comprising a pair of permanent magnetic poles and a pair of induction magnetic poles. When the magnetic field generated by a stator coil of an electric motor is used to drive the pair of permanent magnetic poles, the electric motor operates as a synchronous motor. When such magnetic field is used to drive the pair of induction magnetic poles, the electric motor operates as an induction motor. According to the operation mode and/or the operation state of the electric motor, a controller (B | 03-13-2014 |
| 20140070751 | MOTOR CONTROL APPARATUS INCLUDING AT LEAST TWO RESISTANCE DISCHARGE UNITS - A motor control apparatus includes a rectifier for rectifying AC power to output DC power; an inverter for performing power interconversion of DC power of a DC link and AC power being driving power or regenerative power of a motor by being connected to the DC link being a DC output side of the rectifier; and at least two resistance discharge units each for performing resistance discharge of DC power of the DC link, the resistance discharge units each being connected to the DC link, in which each resistance discharge unit starts a resistance discharge operation for performing resistance discharge of DC power of the DC link at a DC voltage value in the DC link exceeding a first threshold value and stops the resistance discharge operation at a DC voltage value in the DC link smaller than a second threshold value below the first threshold value. | 03-13-2014 |
| 20140077743 | ELECTRIC BICYCLE DRIVING APPARATUS - An electric bicycle driving apparatus is disclosed. The apparatus includes a speed change mode operator to output a first speed change mode signal or second speed change mode signal, a controller to receive the first speed change mode signal or second speed change mode signal and output a first control signal corresponding to the first speed change mode signal or a second control signal corresponding to the second speed change mode signal, a motor driver to, when the first speed change mode signal is output, receive the first control signal and output a first motor driving signal to drive a motor in a first speed change mode, and, when the second speed change mode signal is output, receive the second control signal and output a second motor driving signal to drive the motor in a second speed change mode, and a relay to selectively receive a relay switching enable signal. | 03-20-2014 |
| 20140139166 | METHODS AND SYSTEMS FOR SELECTING AND PROGRAMMING REPLACEMENT MOTORS - Methods and systems for replacing HVAC blower motors and other electric motors are disclosed including systems and methods for gathering and storing information about motors that may need to be replaced, systems and methods for selecting replacement motors, and systems and methods for programming the replacement motors. The systems and methods allow a select few replacement motors to be programmed to replace nearly any original motor. | 05-22-2014 |
| 20140139167 | TRANSFORMERLESS MULTILEVEL CONVERTER - An exemplary medium voltage system includes a multilevel converter connected to a grid connection. The multilevel converter is configured for converting a first multiphase current provided at the grid connection into a second current. The system includes a common mode filter, which, for each phase of the first current, includes a phase filter connected to the respective phase. Each phase filter is connected to a common filter star point which is connected to ground, includes an inductance and a capacitance connected in series, and includes a resistance connected in series with the capacitance such that the inductance and the resistor are connected in parallel. The common mode filter includes an impedance between the common filter star point and the ground. | 05-22-2014 |
| 20140145664 | Power Inverter Including SiC JFETs - A power inverter includes a reference line operably provided with a reference potential and a supply line operably provided with a DC supply voltage with respect to the reference potential. A first half bridge includes a high-side switch and a low-side switch. The high-side switch is coupled between the supply line and a middle tap of the half bridge and the low-side switch is coupled between the middle tap and the reference line. The low-side switch is formed by a normally-on silicon carbide junction field effect transistor and the high-side switch is formed by a series circuit of a normally-on silicon carbide junction field effect transistor and a normally-off metal oxide field effect transistor. | 05-29-2014 |
| 20140210393 | CAPACITOR PRECHARGE CIRCUIT, MOTOR DRIVE SYSTEM, ELECTRIC POWER STEERING SYSTEM AND AIRBAG SYSTEM - A loss (generation of heat) is reduced in a capacitor precharge circuit, thereby reducing the size of the circuit. | 07-31-2014 |
| 20140239868 | METHOD TO COMMAND AND CONTROL THE ELECTRIC MOTOR OF AN AUTOMATION UNIT AND CONNECTED SYSTEM - Method to command and control an electric motor of an automation unit. The unit comprises a mechanical member, driven by a drive shaft, a central command and control unit, and a position detection mean. The method provides that the central command and control unit receives the position signals of the shaft of the electric motor and/or of the mechanical member from the position detection mean, divides the operating cycle into a plurality of sub-phases equal with respect to each other, consisting of elementary units and, for each of said sub-phases, or multiple of sub-phases, selects predefined or self-learnt current reference values, and generates a signal consisting of an instantaneous current reference (feed forward) for the electric motor. | 08-28-2014 |
| 20140253008 | Fail Safe Circuit - Apparatus for preventing output of an input signal is disclosed. The apparatus comprises a signal control unit comprising a signal buffering unit having an input and an output, the signal buffering unit arranged to receive an input signal and pass the input signal to the output when the signal buffering unit is powered, wherein a negative power supply terminal of the signal buffering unit is arranged to be supplied by a first power source having a voltage. The signal control unit also comprises a boost circuit arranged to boost the voltage of the first power source to a boosted voltage higher than the voltage of the first power source and supply either the voltage of the first power source or the boosted voltage to a positive power supply terminal of the signal buffering unit. The signal buffering unit is powered when the boosted voltage is supplied to the positive power supply terminal of the signal buffering unit and the signal buffering unit is not powered when voltage of the first power supply terminal is supplied to the positive power supply terminal of the signal buffering unit. Also disclosed is an apparatus for providing output voltages for driving a motor as well as a motor drive system. | 09-11-2014 |
| 20140265985 | SYSTEMS AND METHODS FOR CONTROLLING ELECTRIC MOTORS - An electronic control module is provided. The electronic control module includes an input device, and a processor coupled to the input device. The processor is configured to generate a command signal in response to an input supplied by the input device, and transmit the command signal to a plurality of motors, wherein the command signal controls an operating point of each of the plurality of motors. | 09-18-2014 |
| 20140265986 | MOTOR CONTROL SYSTEM HAVING COMMON-MODE VOLTAGE COMPENSATION - A motor control system is provided, and includes a motor, at least one differential amplifier configured to monitor phase current applied to the motor, and a current compensation controller. The current compensation controller is in communication with the at least one differential amplifier, and is configured to periodically determine a common-mode voltage of the at least one differential amplifier. The current compensation controller is also configured to determine a corrected phase current value based on the common mode voltage. | 09-18-2014 |
| 20140265987 | METHODS AND SYSTEMS FOR INDUCTIVE ENERGY MANAGEMENT - A controller configured to be coupled to an electric motor. The controller including a processor programmed to receive a signal indicating a stopping command of the electric motor, and control a current such that a capacitor coupled to the electric motor is not overcharged by regenerative energy when a stopping of the electric motor has commenced, wherein controlling the current includes one of the following: upon receiving the signal indicating the stopping command of the electric motor, ramping the current down below a threshold level, or upon receiving the signal indicating the stopping command of the electric motor, forcing the current to circulate in motor windings to prevent regeneration of energy in the capacitor. | 09-18-2014 |
| 20140300307 | DETECTING FAULTS IN MOTORS AND DRIVES - Disclosed herein is a system and method for determining faults in motors and drives. The system includes a motor drive that has a DC-link coupled to a power source. A controller system is configured to measure power applied to the DC-link, integrate the power over time to yield energy consumed, and to determine energy that accumulates in operation over time. The controller is further configured to detect a fault condition when the energy that accumulates in operation is less than expected based on the energy consumed. | 10-09-2014 |
| 20140306636 | FAN CONTROL SYSTEM - A fan control system includes a fan and a portable mobile device. The fan includes a housing member; a driving motor mounted in the housing member and having a rotary shaft; a fan blade assembly assembled to the rotary shaft of the driving motor; and a command receiving control unit mounted in the housing member and electrically connected to the driving motor. The portable mobile device includes a touch panel forming an operation control interface, and internally has a transmission unit and a processor electrically connected to the touch panel and the transmission unit. When the operation control interface is touched, the processor receives an operation control signal and correspondingly generates a control command that is wirelessly transmitted to the command receiving control unit in the fan via the transmission unit, so that the fan is directly controllable via the portable mobile device and has largely increased practicality and usability. | 10-16-2014 |
| 20140368149 | Electronic Device - An electronic device for controlling and/or regulating a drive unit includes a memory configured to make available at least two at least partially different control parameter sets which are each usable to at least one of control and regulate one of at least two drive units. The electronic device further includes a control unit which is configured to select one of the at least two parameter sets of the memory unit as a function of at least one operating parameter of the drive unit. | 12-18-2014 |
| 20140375242 | Depletion Mode Group III-V Transistor with High Voltage Group IV Enable Switch - There are disclosed herein various implementations of a half-bridge or multiple half-bridge switch configurations used in a voltage converter circuit using at least two normally ON switches. Such a circuit includes a high side switch and a low side switch coupled between a high voltage rail and a low voltage rail of the voltage converter circuit. The high side switch is coupled to the low side switch at a switch node of the voltage converter circuit. At least one group IV enhancement mode switch is used as an enable switch. The group IV enhancement mode enable switch may be an insulated gate bipolar transistor (IGBT), a super junction field-effect transistor (SJFET), a unipolar group IV field-effect transistor (FET), or a bipolar junction transistor (BJT). | 12-25-2014 |
| 20150028786 | DRIVE SYSTEM WITH ENERGY STORE AND METHOD FOR OPERATING A DRIVE SYSTEM - A drive system with energy store and method for operating a drive system, an inverter powering an electric motor, the inverter being supplied from a unipolar DC-link voltage, an energy store being connected in parallel to the inverter, in particular, a film capacitor being connected in parallel to the inverter, the DC-link voltage being generated by a DC/DC converter which is supplied from an AC/DC converter, especially a rectifier, in particular, an electric current being able to be supplied to the DC link by the DC/DC converter. | 01-29-2015 |
| 20150028787 | CONVEYANCE CART - A conveyance cart includes: a body frame; a deck provided liftably against the body frame to load a burden; an electric actuator electrically driven to expand or contract to lift or lower the deck; a current detection element that detects an electric current value supplied to the electric actuator; and a PWM control element that drives the electric actuator in a pulse width modulation (PWM) control manner. The PWM control element increases an on-duty ratio input to the electric actuator if the electric current value detected by the current detection element exceeds a setting value when the deck is lifted. | 01-29-2015 |
| 20150035466 | DISTRIBUTED GAP INDUCTOR FILTER APPARATUS AND METHOD OF USE THEREOF - The invention comprises a high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty Hertz output. For example, an inductor/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies. A filter, comprising an inductor having a distributed gap core material and optional magnet wires, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies. | 02-05-2015 |
| 20150084569 | INTEGRATED SYSTEM OF CIRCUITS FOR SERIAL FAN STRUCTURE - An integrated system of circuits for serial fan structure includes a first and a second fan connected back to back. A first driving unit and a first control unit for the first fan and a second driving unit and a second control unit for the second fan are sequentially electrically connected to a circuit board in the second fan. Further, a first coil assembly of the first fan and a second coil assemble of the second fan are also electrically connected to the circuit board in the second fan; and some low-use-rate electronic circuits are included in a common circuit unit of the first and the second fan. Therefore, the serial fan structure can save one circuit board and some low-use-rate electronic circuits from the first fan to achieve the purpose of reducing the manufacturing cost of the serial fan structure. | 03-26-2015 |
| 20150084570 | MOTOR CONTROL APPARATUS - A motor control apparatus controlling a driving of a motor having two pairs of winding sets is provided. The motor control apparatus includes a current command value calculation portion, a first system, a second system, and a temperature difference calculation portion. The first system includes a first power inverter circuit, a first temperature sensor, a first current limit setting portion, and a first controller. The second system includes a second power inverter circuit, a second temperature sensor, a second current limit setting portion, and a second controller. One of the first controller and the second controller stops a driving of one of the first power inverter circuit and the second power inverter circuit or reduces the current limiting value of this. | 03-26-2015 |
| 20150084571 | METHODS AND SYSTEMS FOR SELECTING AND PROGRAMMING REPLACEMENT MOTORS - Methods and systems for replacing HVAC blower motors and other electric motors are disclosed including systems and methods for gathering and storing information about motors that may need to be replaced, systems and methods for selecting replacement motors, and systems and methods for programming the replacement motors. The systems and methods allow a select few replacement motors to be programmed to replace nearly any original motor. | 03-26-2015 |
| 20150303856 | MOTOR DRIVING CIRCUIT - A motor driving circuit is provided. The motor driving circuit includes an else inverter and a self inverter. The else inverter includes an else-inverter rectifier and an else-inverter driving circuit. The self inverter includes a self-inverter driving circuit and a soft-start protection circuit. The soft-start protection circuit includes a first and a second protection diodes, a self-inverter capacitor and a self-inverter soft-start circuit. The first protection diode is electrically connected to a first else-inverter-rectifier output and a first self-inverter-driving-circuit input. The second protection diode is electrically connected to a second else-inverter-rectifier output and a second self-inverter-driving-circuit output. The self-inverter soft-start circuit and the self-inverter capacitor are connected in series between a first cathode and a second anode of the first and the second protection diodes. | 10-22-2015 |
| 20150311840 | POWER CONTROLLER FOR SUPERCAPACITOR - A power controller, including a supercapacitor, a motor, a switching tube, an annunciator, an output resistor, a sampling resistor, a filter capacitor, a voltage-stabilizing circuit, a fly-wheel diode, and a switch. The supercapacitor, the motor, the switching tube and the sampling resistor are connected in series to form a main working circuit. The signal output end of the annunciator is connected to a trigger electrode of the switching tube via the output resistor. The sampling end of the annunciator is connected to the sampling resistor. The motor is connected in parallel to the fly-wheel diode. The sampling resistor is connected in parallel to the filter capacitor. The Vcc end of the annunciator is connected to the supercapacitor via the voltage-stabilizing circuit. The state control ends of the annunciator are connected to the GND or Vcc of the annunciator via the switch. | 10-29-2015 |
| 20150349697 | METHOD AND DEVICE FOR CONTROLLING A ROTATIONAL SPEED OF A DRIVE - In a method and a corresponding device for controlling a rotational speed of a drive driving a shaft, the rotational speed is controlled by a control device which is supplied with a control deviation calculated based on a desired value and an actual value for the rotational speed. The actual value for the rotational speed of the shaft is measured on the shaft with a first sensor and at least one additional sensor and the actual value is calculated from a weighted average of the individual measured values for the rotational speed obtained from the first and the at least one additional sensor. | 12-03-2015 |
| 20160013686 | SINGLE-PHASE ELECTRIC MOTOR | 01-14-2016 |
| 20160028341 | SYSTEMS AND METHODS FOR ZERO COMMON MODE VOLTAGE - An electrical system includes a converter having an H-bridge. The H-bridge includes a first set of transistors electrically connected in series and a second set of transistors electrically connected in series. The first set and the second set of transistors are electrically connected in parallel. The H-bridge defines three available switching states such that a common mode voltage across the H-bridge at each switching state is zero. A method for reducing electromagnetic interference (EMI) in pulse-width modulation (PWM) converters includes diagonally switching transistors of the H-bridge. Diagonally switching the transistors of the H-bridge includes constraining available switching states of the H-bridge to only include the switching states with zero common-mode voltage such that common-mode voltage on an AC output side of the H-bridge is zero. | 01-28-2016 |
| 20160036368 | SYSTEM AND METHOD OF CONTROLLING PARALLEL INVERTER POWER SUPPLY SYSTEM - A method of controlling a pair of inverters connected in parallel and providing power to a motor. The speed of the motor is adjusted by varying the amplitude or frequency of the voltage supplied by each of the inverters to the motor. The method includes providing a system controller for controlling the frequency of the voltage supplied by each of the inverters. The frequency or amplitude setpoint of the voltage provided by each of the inverters is changed by sending a command signal from the system controller to each of the inverters in order to change the speed of the motor. The frequency or amplitude setpoint is controlled by a slew rate limiter. | 02-04-2016 |
| 20160111994 | MACHINE LOSS MODELING FOR IMPROVED FIELD ORIENTED CONTROL ACCURACY - Controllers, method and programs for controlling machines are provided. For example, A method comprises determining a resistance value for a loss compensation resistor, updating at least one control equation based on an equivalent circuit using the resistance value and controlling the machine based on the updated at least one control equation. The resistance value represents a plurality of electro-magnetic losses of a machine. The resistance value can be determined from an inverse resistance value. | 04-21-2016 |
| 20160118921 | CONTROL CIRCUIT AND METHOD - In accordance with an embodiment, an actuator control circuit includes a driver circuit connected to a ringing characteristic determination circuit. A signal generator that is configured to generate an output signal having first period that has first and second portions where the first portion longer than the second portion is connected to the ringing characteristic determination circuit. Another embodiment includes a method for controlling an actuator by determining a resonant frequency and a ringing amplitude of an actuator signal; generating a control signal in response to the resonant frequency and the ringing amplitude of the actuator signal; and causing the actuator to move in response to the second drive signal. | 04-28-2016 |
| 20160156296 | SIGNAL CONTROL SYSTEM FOR FAN MOTOR | 06-02-2016 |
| 20160190969 | Head End Power Module Having Two Inverters - The present disclosure is directed to a method for generating power for a machine. The method may include inverting a common power at a first location and outputting a first inverted power. The method may further include inverting the common power at a second location, outputting a second inverted power, and shifting an operational phase of the second inverted power so that the first inverted power and the second inverted power are in phase. The method may further include passing the first inverted power to a transformer, passing the second inverted power to the transformer, and transforming the first inverted power and the second inverted power to a transformed power. | 06-30-2016 |
| 20160252568 | SENSOR FAULT DETECTION CIRCUIT, RELATIVE ANGLE DETECTION DEVICE, AND MOTOR-DRIVEN POWER STEERING APPARATUS | 09-01-2016 |
