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
System and method for determining a characterisitic of an object adjacent to a route
Flashlight
Basketball
Methods and apparatus for imaging in conjunction with radiotherapy
Analysis device and an analysis apparatus using the analysis device
Simplifying lexicon creation in hybrid duplicate detection and inductive classifier systems
Pipette device
  Randomly Featured Patents
Means for protecting solar water heating equipment against frost damage
Calibrachoa plant named `01C-J-4`
Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater
Spreader frame
Dual trench isolation using single critical lithographic patterning
Portable storage device
Fluid-filled elastic rotational coupling having two fluid chambers on each side of wing members
System and method for managing data on an RFID tag associated with a product
Inhibitor treatment program for chlorine dioxide corrosion
Multiple processing method