Method and inverter for converting a DC voltage into a...

Details Method and inverter for converting a DC voltage into a... Method and inverter for converting a DC voltage into a...

2006-01-23

2010-12-28

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S040000, C363S017000, C363S098000, C363S132000

Reexamination Certificate

active

07859867

ABSTRACT:
A method and inverter (2, 27) for converting a DC input voltage supplied by a DC source (9), which is in particular a solar cell array, into a 3-phase AC output. For each phase (R, S, T) the DC input voltage is converted to a DC output voltage (DCR, DCS, DCT) with a specific waveform. The waveforms of the three DC output voltages are identical, shifted in time by 120° to each other and they are such that by subtracting any two of them a sinusoidal waveform is obtained. The waveform of each DC output voltage may comprise a first portion of ⅓ or 120° of the AC output cycle with an amplitude of zero and a subsequent second portion of ⅔ or 240° of the AC output cycle during which the DC output voltage has a non-zero amplitude.

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T. Shimitzu et al.; “A Flyback-type Single Phase”, IEEE Power Electronic Specialist Conference, (PESC), pp. 1483-1488, 2002.

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