Power converter
AssigneeFuji Electric Co., Ltd.
InventorMichio Iwahori
Life of this patent
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Abstract
Provided is a power converter that is capable of ensuring a conduction current without expanding the configuration of a DC voltage conversion circuit such as a DC chopper. Power can be supplied from both a DC chopper and a voltage source rectifier converting AC power into DC power, to a voltage source inverter. The voltage source rectifier has an upper arm part and a lower arm part having switching elements. The voltage source rectifier converts AC power obtained from an alternator into DC power, performs a DC chopper operation using the upper and lower arms thereof and a winding wire of the alternator, and supplies power of a DC power source to the voltage source inverter.
Claims20
A power converter, comprising:
- a voltage source rectifier converting AC power obtained from an AC power source into a DC power output;
- a DC power source;
- a DC voltage conversion circuit converting a DC voltage obtained from the DC power source into a different DC voltage and outputting a corresponding DC power;
- and
- a load driving circuit converting at least either the DC power output of the voltage source rectifier or the DC power output of the DC voltage conversion circuit into AC power to drive an AC load,
- wherein the DC power source is connected to the DC voltage conversion circuit to convert a voltage of the DC power source and supply a resultant voltage to the load driving circuit,
- and wherein the DC power source is connected to the voltage source rectifier via a DC power supply circuit and inductance elements, and the voltage source rectifier is controlled as a DC chopper, to convert the voltage of the DC power source and supply a resultant voltage to the load driving circuit.
An apparatus comprising:
- a rectifying device configured to convert an AC power input into a first DC power output;
- a DC voltage conversion device configured to convert a DC voltage input into a second DC power output;
- and
- a load driving device configured to convert at least one of the first DC power output or the second DC power output into an AC power output;
- wherein the rectifying device is operable as a DC chopper.
Dependencies are inferred from the claim text.