| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318440000 | HAVING PLURAL, DIVERSE OR DIVERSELY CONTROLLED SOURCES | 20 |
| 20080211441 | MOTOR CONTROLLER OF ELECTRIC POWER STEERING DEVICE - In a motor controller which supplies electric power to a motor of an electric power steering device from a main power supply and an auxiliary power supply, an N-channel MOS-FET is connected in parallel with a diode which is provided to prevent a sneak current from the auxiliary power supply to the main power supply. When electric power is supplied to the motor from the main power supply, the MOS-FET is turned on. Then, most of currents flow into the MOS-FET such that a power loss is reduced and a reduction in efficiency is prevented. The MOS-FET has high speed responsibility and excellent durability. | 09-04-2008 |
| 20090033266 | Solid state switch gate firing with phase shift delay line - A gate firing phase shift delay line technique is described for use in DC motor drive systems and is easily adaptable for controlling a plurality of electronically coupled power modules. A drive regulator is configured to produce a master gate firing timing signal for controlling the gate firing pattern of switching devices for a first power module. One or more delay blocks are configured to generate slave gate firing timing signals that are phase locked and identical but delayed in time with respect to the master signal. Each additional delay block is coupled to an additional power module having a set of switching devices controllable by the slave signals. The current output of each power module is summed via summing circuitry to deliver an output suitable to drive motors or other electrical loads in high power applications. The power modules can also be connected in series to combine (sum) the voltages for delivery to an electrical load. The present technique allows for DC motor drive systems to be tuned to a higher bandwidth level due to increased stability, resulting in increased drive performance and production speed. | 02-05-2009 |
| 20090039815 | Power supply device for vehicles - A power supply device for vehicles, output units ( | 02-12-2009 |
| 20090091281 | MOTOR DRIVING APPARATUS - A motor driving apparatus having a converter, which receives AC voltage and converts it to DC power, and an inverter, which receives the DC power and converts it to AC power, includes a charge/discharge control circuit and a capacitor connected in parallel to a link section between the converter and the inverter, and energy stored in the capacitor C | 04-09-2009 |
| 20090134828 | METHOD AND SYSTEM FOR OPERATING AN ELECTRIC MOTOR COUPLED TO MULTIPLE POWER SUPPLIES - Methods and systems are provided for operating an electric motor having at least one winding coupled to first and second power supplies. A torque command for the electric motor is received. A present power reserve for the first and second power supplies is determined based at least in part on the torque command. An operating voltage for the second power supply is determined based on the present power reserve. The operating voltage for the second power supply is applied to the at least one winding. The application of the operating voltage allowing the present power reserve to flow between the first and second power supplies and the motor. | 05-28-2009 |
| 20090322271 | Device and a Method For Providing Electrical Energy to an Actuator, and an Actuator System - A method for providing electrical energy to an actuator is disclosed. In at least one embodiment, the method includes having a first voltage (UBUS) from a data bus; ii) converting the electric current to a current having a second voltage that is higher than the first voltage; iii) storing electrical energy of the second electric current; and discharging the stored electrical energy to an actuator. A device is also disclosed for providing electrical energy to an actuator. | 12-31-2009 |
| 20100289443 | Limiting Peak Electrical Power Drawn By Mining Excavators - The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit. | 11-18-2010 |
| 20150084566 | DEVICE AND METHOD FOR SUPPLYING AN ELECTRIC DRIVE WITH ELECTRIC CURRENT - The present invention relates to a device ( | 03-26-2015 |
| 20150326066 | POWER SUPPLY DEVICE - A power supply device for supplying power to a load by combining a secondary battery and a capacitor connected in parallel to the secondary battery includes an insulation type DC-DC converter with a primary coil connected in parallel to the secondary battery and configured to accumulate energy by a current supplied from the secondary battery and a secondary coil connected in series to the capacitor and configured such that an induction current flows therein by the accumulated energy from the primary coil. | 11-12-2015 |
| 318441000 | A.C. and D.C. | 8 |
| 20080284363 | Hybrid electric cleaning device - A cleaning device includes a housing configured with a working element. The device also includes a motor configured for urging motion of the working element. The device also includes a power control module which may be electrically connected with at least one of the motor, a first power source configuration and a second power source configuration. Electric current is provided to the motor by the first and/or the second power source configurations. The first power source configuration may be electrically connected to a battery assembly having a DC power output. The second power source configuration may be electrically connected to a power inverter which may receive AC power and output DC power to the second power source configuration. The motor may be one of a permanent magnet DC (PMDC) motor, a universal motor and an induction motor, the motor receiving power via the power control module from at least one of the first power source configuration and the second power source configuration. | 11-20-2008 |
| 20080297086 | CLEANER AND METHOD FOR DRIVING THE SAME - A cleaner that can be operated at motive force of sufficient strength by using a battery voltage as well as by using a AC voltage. The cleaner uses a low-resistance-mode motor to rotate a collecting fan. The low-resistance-mode motor is driven by a motor driver. The motor driver drops a DC voltage converted from the AC voltage, depending on whether the AC voltage is received. Depending on whether the AC voltage is received, the motor driver drives the low-resistance-mode motor using one of the battery voltage and the dropped voltage. | 12-04-2008 |
| 20090066282 | SERIAL BACKPLANE FOR MEDIUM VOLTAGE MOTOR DRIVE SYSTEM - A hybrid backplane uses multiple, parallel serial communication channels to provide flexibility and robustness in a motor drive control requiring high-speed data communication for the real-time control of motor waveforms. | 03-12-2009 |
| 20090096399 | INTELLIGENT MOTORIZED APPLIANCES WITH MULTIPLE POWER SOURCES - A motorized portable appliance which monitors, and automatically selects, one of multiple power sources. The motorized portable appliance includes an electric motor, a secondary battery and at least one other source of electrical power, and an automatic control to switch between the secondary battery and the other source of electrical power, which may be mains electrical power, an external secondary battery, an on-board secondary battery, an automotive battery, a solar photovoltaic array, or a primary battery. Power conditioning circuitry converts power from the various power sources to a form compatible with the electric motor and recovers remaining power from depleted primary batteries. | 04-16-2009 |
| 20090218976 | MOTOR DRIVING APPARATUS - A motor driving apparatus comprises a charge/discharge control circuit for controlling charge to or discharge from a capacitor connected in parallel in a link section between a converter and an inverter, and a current control means for controlling discharge current from the charge/discharge control circuit. The current control means controls discharge current from the charge/discharge control circuit based on input current to the inverter or output current from the converter so that output current from the converter is equal to a prescribed value. | 09-03-2009 |
| 20090289589 | Power supply system - A power supply system includes a fuel cell, a capacitor connected in parallel to the fuel cell, a voltage boost means for boosting output voltages from the fuel cell and the capacitor to supply the electric motor with electric power resulting from the boosted voltages, a voltage control means for further boosting an output voltage from the voltage boost means, a secondary battery connected to the voltage control means, an external power source connecting means connected to the one end of the voltage boost means and in parallel with the fuel cell and for receiving supply of electric power from an external power source, and an electronic control unit which charges the secondary battery from the external power source by controlling step-up ratios of the voltage boost means and the voltage control means such that a voltage applied to the secondary battery during the charging becomes a desired voltage. | 11-26-2009 |
| 20130069578 | Brushless Ceiling Fan Motor Power Control System - A brushless ceiling fan motor power control system where the DC power input of the power distribution unit is electrically connected to a voltage boosting circuit and a voltage detecting circuit, and the voltage detecting circuit is electrically connected to the AC/DC power selecting output circuit via the first CPU, and the AC current input circuit of the power distribution unit is electrically connected to the AC/DC current power selecting output circuit. | 03-21-2013 |
| 20130307455 | STATOR TEETH, STATOR, ROTATING ELECTRIC MACHINE, AND METHOD FOR CONTROLLING ROTATING ELECTRIC MACHINE - There is provided a single motor which performs plural driving characteristics and can expand output range thereof. Three coils are wounded around each of the stator teeth A to F, and provided to each stator tooth A to F are switches for providing a concentrated winding state by connecting the three coils in series in each stator tooth A to F, and switches for providing a distributed winding state by connecting in series the coils of any one of units through the stator teeth A to F Depending on the rotating speed, the torque or the like, the coils are changed between the concentrated winding state and the distributed winding state. | 11-21-2013 |
| 318442000 | Different voltages | 3 |
| 20140197768 | Hot Standby Power Supply for a Variable Frequency Drive - A hot standby power supply for a variable frequency drive of a floating vessel is provided. The variable frequency drive may power an electric motor of the floating vessel. The hot standby power supply includes a power input for receiving electric power from a main power supply of the floating vessel. The hot standby power supply also includes a first electric connection configured to supply electric power at a first voltage level to a converter power input of the variable frequency drive, and a second electric connection configured to supply electric power at a second voltage level to control power input of the variable frequency drive. The first voltage level is higher than the second voltage level. A transformer is further provided for transforming received electric power to the first voltage level or to the second voltage level. | 07-17-2014 |
| 20140253006 | POWER CONVERTER - A power converter is for a rotating electrical machine including first and second winding sets, each of which has coils corresponding to phases of the rotating electrical machine. In the power converter, a first inverter energizes the first winding set, a second inverter energizes the second winding set, a current sensor detects a phase current flowing through each coil, and a control section drives the first and second inverters respectively based on first and second voltage command signals. The first inverter and the first winding set form a first system. The second inverter and the second winding set form a second system. The control section calculates the first and second voltage command signals so that average voltages applied to the first and second winding sets can be different from each other. The failure detector detects whether a short-circuit occurs between the first and second systems based on each phase current. | 09-11-2014 |
| 20150130384 | DRIVE CIRCUIT FOR AN AIR BEARING MOTOR - The invention relates to a drive circuit for an electric motor having an aerodynamic support of the motor shaft, wherein the drive circuit comprises at least one storage means for storing electrical energy by which the electric motor can be fed with electrical energy on a failure of the supply voltage or intermediate circuit voltage to obtain a minimum speed of the motor shaft required for the air support at least at times. | 05-14-2015 |
