Power conversion apparatus

Details Power conversion apparatus Power conversion apparatus

2006-02-21

2009-10-13

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S132000

Reexamination Certificate

active

07602626

ABSTRACT:
In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.

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patent: 7485987 (2009-02-01), Mori et al.
patent: 2007/0147098 (2007-06-01), Mori et al.
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patent: 2000-228883 (2000-08-01), None
patent: 2003-219659 (2003-07-01), None
Mabuchi, M. et al.; “Development of KP40F Solar Power Conditioner”,Omron Technics, vol. 42, No. 2, Serial No. 142, pp. 146-151 (2002).

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