A utility-connected residential PV system adapted a novel single-phase composite PWM voltage source inverter

Author

Nonaka, Sakutaro

Author_Institution

Fac. of Eng., Kinki Univ., Fukuoka, Japan

Volume

1

fYear

1994

fDate

5-9 Dec 1994

Firstpage

1064

Abstract

An electric utility-interactive residential PV power system adapted 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 of the arm avail to adopt 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 pulsated current. Consequently, the smoothing capacitor is drastically reduced. It was found by computer simulation and experiment that the waveform of AC output current shows an ideal sine wave

Keywords

DC-AC power convertors; PWM invertors; bridge circuits; electricity supply industry; photovoltaic power systems; power system analysis computing; power system harmonics; power system interconnection; power system measurement; resonant power convertors; secondary cells; solar cell arrays; solar cells; AC output current ripple; DC pulsated current; LC series resonance circuit; PV array; auxiliary self-turn-off devices; battery storage; computer simulation; double-frequency AC components; electric utility interconnection; experiment; output current waveform; power supply harmonics; residential PV power system; single-phase PWM VSI; single-phase bridge circuit; smoothing capacitor; voltage source inverter; Batteries; Bridge circuits; Capacitors; Power systems; Pulse width modulation; Pulse width modulation inverters; RLC circuits; Resonance; Smoothing methods; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1460-3

Type

conf

DOI

10.1109/WCPEC.1994.520145

Filename

520145