Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Power conversion apparatus and method and automobile










Image Number 13 for United States Patent #7659689.

An apparatus and method for supplying a polyphase (AC) alternating current motor with driving voltages. A conversion unit is coupled to phases of the polyphase AC motor and includes a plurality of switching devices and includes, in at least one phase, a first switching device between a bus of an AC power supply and an output terminal, a second switching device between a bus of a direct current (DC) power supply and the output terminal, and a third switching device between a common bus for the AC power supply and the DC power supply and the output terminal. Driving voltages for the polyphase AC motor are generated by selecting a voltage from among voltages having potential values corresponding to the AC power supply and the DC power supply, and the selected voltage is used to operate a switch of the plurality of switching devices.








 
 
  Recently Added Patents
Interface circuit
Glow in the dark swim goggle frame and band
RPM Controlled Wind Power Generation System
Humidity indicator and method for fabricating the same
Electronic flash device
Hard disk drives having different rotational speeds
Hydrostatic pad pressure modulation in a simultaneous double side wafer grinder
  Randomly Featured Patents
Abnormal condition detection device for corona discharger in electrophotographic copying machine
Method, system, program, and data structures for applying a patch to a computer system
Personal electronic storage device, container, and labeling
Multi-function solar-powered lighting system
Top arch overfilled system
Method and apparatus for analyzing inductive effects in a circuit layout
Vibration device
Apparatus and method for automated testing of print drivers in a computer system
Lubricant reservoir
Power tool