A utility-connected residential PV system adapted a novel single-phase composite PWM voltage source inverter
Conference
·
OSTI ID:208246
- Kinki Univ., Iizuka, Fukuoka (Japan)
A Utility-interactive residential PV system adapted a novel single-phase composite PWM voltage source inverter (VSI) is proposed. The proposed system is equipped with PV array, battery storage, and a single-phase VSI, which has a new circuit configuration and PWM method. The VSI circuit consists of the normal single-phase bridge circuit and an additional arm. The two auxiliary self-turn-off devices for the arm adopt to a composite PWM control, which contributes to reduce the ripple in the AC output current. Also, the VSI has a LC series resonance circuit tuned to twice the utility frequency connected in parallel with the smoothing capacitor. The series resonance circuit absorbs the double-frequency AC components included in the DC pulsed current. Consequently, the smoothing capacitor is drastically reduced. It was found with the computer simulation and the experiment that the waveform of AC output current shows an ideal sine wave.
- OSTI ID:
- 208246
- Report Number(s):
- CONF-941203--; ISBN 0-7803-1459-X
- Country of Publication:
- United States
- Language:
- English
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