Match Document Document Title
7990098 Series-coupled two-motor drive using double-ended inverter system  
Systems and apparatus are provided for an inverter system for use in a vehicle. The inverter system comprises a six-phase motor having a first set of three-phase windings and a second set of...
7990099 Power converting device for electric train  
A power converting device for an electric train includes a power converter, an alternating-current motor, a primary control unit, and a control unit. The power converter converts direct-current...
7986121 Inverter apparatus and a semiconductor device used for the same  
An inverter apparatus is for correcting deviations among current detectors of a three-phase motor. The inverter apparatus includes bidirectional switching elements that have on and off states in...
7982426 Electric power system  
An electric power system comprises an AC motor, a first DC voltage unit, an inverter as a power converter, being connected between the AC motor and first DC voltage unit, for exchanging power...
7973510 Apparatus for controlling inverter  
The apparatus for controlling an inverter is disclosed which detects a rotation angle of a load using a current supplied to the load when the inverter utilizes a voltage/frequency control to...
7969039 Method of controlling fuel cell vehicle and method of controlling DC/DC converter apparatus  
A controller is capable of executing direct couple control that directly couples a first power device and a second power device without causing a DC/DC converter to convert voltage. During the...
7965056 Control apparatus of power conversion system  
The invention provides a control apparatus of a power conversion system for driving an induction motor via a VVVF inverter, wherein the AC voltage generated by the inverter is increased so as to...
7960948 Electromechanical energy conversion systems  
An exemplary power system may include an electric machine with multiple sets of stator windings, each set of windings being coupled through a separate switch matrix to a common voltage bus, and...
7960928 Flux controlled motor management  
A motor in an electric vehicle can be controlled by receiving at least one of a user input or vehicle information, selecting one of a plurality of available flux modes using at least one of the...
7960937 Inverter unit, integrated circuit chip, and vehicle drive apparatus  
A miniaturizable, low-cost highly reliable inverter unit. A control circuit section for controlling operating timing of high breakdown voltage semiconductor elements included in an inverter...
7956569 Double ended inverter system with an impedance source inverter subsystem  
A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second...
7952317 Motor driving inverter circuit module, motor driving apparatus having the motor driving inverter circuit module, and inverter integrated circuit package  
The motor driving inverter circuit module includes first-phase, second-phase, and third-phase high voltage drivers generating first-phase, second-phase, and third-phase upper arm and lower arm...
7948201 Induction motor control device  
An induction motor control device includes an inverter circuit for driving an induction motor by outputting a command voltage, a current detector for detecting an output current, a magnetic flux...
7948205 Multi-phase AC motor driving device  
A multi-phase AC motor driving device in which occurrence of failure is not erroneously determined is provided. In a multi-phase AC motor driving device including an inverter circuit; current...
7936146 Motor control device  
A motor control device has: a motor current detecting portion for detecting, based on a current flowing between an inverter and a direct-current power supply, a motor current flowing through a...
7923960 Method for controlling a polyphase voltage inverter  
A method for driving a power bridge (1) which is used for controlling a multiphase electric load (3), is connectable to said electric load (3) through several arms and is drivable by switching...
7923945 Voltage control of upconverter in a motored vehicle drive  
When an ECU receives a transmission signal having a high level from a transmission, the ECU exerts torque reduction control to reduce a torque control value for a motor generator. Furthermore the...
7915853 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...
7911162 Motor drive device and control method  
A motor drive device (100) includes a boost converter (12) boosting a power supply voltage and outputting a boosted voltage; an inverter (14) receiving the boosted voltage from the boost converter...
7911161 Automotive power inverter with reduced capacitive coupling  
An automotive power inverter is provided. The power inverter includes a chassis, a microelectronic die coupled to the chassis and having an integrated circuit formed thereon, and an insulating...
7906933 Apparatus and method for driving an induction motor  
An induction motor drive includes a plurality of inverters, a changeover switch which changes over outputs of the plurality of inverters to be supplied to one induction motor and a changeover...
7898197 Motor control device  
A motor control device includes a motor current detector for detecting motor current flowing in a three-phase motor based on current flowing between an inverter driving the motor and a DC power...
7898209 Cleaner and method for driving the same  
A cleaner that can automatically respond to a change in an AC voltage and a voltage of a battery. In the motor, a motor for rotating a collecting fan is driven by a motor driver. The motor driver...
7888905 Method and system for controlling a power inverter in electric drives  
Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. A signal controlling the power inverter is modified utilizing a first voltage...
7885089 Electric power generation and conversion with controlled magnetics  
A power conversion system comprises: a source of multiphase high frequency alternating current (AC) electrical input power; a high frequency controlled magnetics transformer for each phase of the...
7880426 Polyphase voltage converter control method  
A method for driving a power bridge (1) which is used for controlling a multiphase electric load (3), connectable to said electric load (3) via several arms and drivable by switching functions...
7876064 Motor drive inverter that includes III-nitride based power semiconductor devices  
An inverter for driving a motor includes one or more power stages for producing one or more power signals for energizing the motor, each power stage including first and second III-nitride based...
7872441 Systems and methods for operating Z-source inverter inductors in a continuous current mode  
Systems, apparatus, and methods for operating inductors in a Z-source inverter in a continuous current mode are provided. One system includes an AC motor, a Z-source inverter, and a processor. The...
7868569 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...
7859210 Semiconductor device for driving motor, three-phase motor and motor driving apparatus with the semiconductor device and fan motor  
In order to prevent a short circuit of top and bottom arms of a motor driving IC when noise is added to six control signals for controlling six switching elements, there is provided a...
7855527 Inverter device  
The inverter device contains the following structure: an inverter circuit which has upper-arm switching elements that are connected on a positive side of a DC power source and lower-arm switching...
7852040 Motor driver system and method for controlling motor driver  
A motor driver system and its control methods are discussed. Even when a command magnetic flux decreases as a motor operates in a field weakening region, a current angle can be maintained always...
7852026 Motor drive apparatus and motor drive control method  
A protection circuit is configured to change control modes in a drive control process of a drive circuit for a motor when overvoltage is applied to a power source line while the motor is driven....
7852025 Electronic commutator circuits  
The present invention provides an electronic commutator circuit for use with a stator winding of an electrical machine. The stator winding of the electrical machine includes a number of coils...
7847499 Electric load apparatus, electric load controlling method and computer readable recording medium recording program for causing computer to execute control of electric load  
An electric load apparatus (100) includes a DC power source (B), a voltage sensor (10, 20), system relays (SR1, SR2), a capacitor (11, 13), a DC/DC converter (12), an inverter (14), a current...
7843161 Inverter device  
This invention provides an inverter device that can detect a step-out state of an AC motor by a simple process without depending on a rotation speed of the AC motor and also surely hold an...
7843162 Current regulator and current control method and system for AC motors  
Methods and systems are provided for controlling an AC motor via an inverter. The method includes determining a delay-compensated offset based on a synchronous frame current, producing a current...
7843671 Electric machine control system  
A drive system for an electrical machine is provided. The system includes a control unit and a monitoring unit, which is independent of the control unit. The control unit includes a device that...
7843156 Method and apparatus for active voltage control of electric motors  
Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes...
7843674 Motor drive circuit  
A motor-drive circuit comprising: a current-passage-control circuit to perform ON/OFF control of a drive transistor connected to a motor coil to pass current through the motor coil; an...
7839108 Electric motor stator winding temperature estimation  
A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The...
7834578 Load driving apparatus, vehicle, and abnormality processing method at load driving apparatus  
When an ECU determines that the motor count of a motor generator exceeds a predetermined limit value, control is effected to set the torque of motor generator to zero. Further, when the ECU...
7834574 Phase current sampling and regulating apparatus and methods, and electric motor drive systems  
In various embodiments, a phase current sampling apparatus (300, 600, FIGS. 3, 6), an electric motor drive system (100, FIG. 1), and a motor vehicle (1200, FIG. 12) include switching circuitry...
7834579 Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level AC drive inverter bridge  
A method and circuit enabling off-the-shelf controllers designed for use with a two-level AC drive inverter bridge (1920) to drive inverter bridges with three-or-more levels. Signals from an...
7825620 Controller and constant measuring apparatus for AC motor  
A controller and a constant measuring apparatus have a means for supplying a synthesized current, resulting from superimposing an AC current to a DC current, from an inverter and for changing the...
7825621 Junction temperature reduction for three phase inverters modules  
Provided is a motor controller and method of controlling a motor with an improved maximum junction temperature rating. In accordance with one aspect of the present invention, a motor is controlled...
7821223 Vector controller for a permanent magnet motor and inverter module  
In a system in which current is detected in an inexpensive manner or in a system in which a position detector is omitted, the present invention provides a high-efficiency vector controller for a...
7808202 Beat-less controller for permanent magnet motor  
In a driving system for an inverter that uses a diode rectifying circuit to convert a single-phase or three-phase AC voltage to a desired DC voltage and drives a permanent magnet motor, a...
7804271 Multiphase current supplying circuit, driving apparatus, compressor and air conditioner  
A multiphase current supplying circuit includes a converter, an intervening circuit, an inverter, a control circuit and a lightning arrester. A power supply system is connected to the converter...
7800331 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...