Advanced circuit of five-level PWM inverter with an inductive load

Author

Ohsato, Masato H. ; Inarida, S. ; Kimura, Gunji ; Shioya, Mitsuo

Author_Institution

Fac. of Technol., Tokyo Metropolitan Univ., Japan

fYear

1991

fDate

28 Oct-1 Nov 1991

Firstpage

303

Abstract

The authors present a type of PWM (pulse-width-modulated) inverter for a small-scale photovoltaic power system. It has five voltage levels, including the earth level, which is composed of charging two storage battery units in series or parallel combination. The waveform of the output voltage is more sinusoidal than that of the conventional PWM inverter. In the case of an inductive load, however, the waveform shows some deteriorations. The operation of this PWM inverter with an inductive load is analyzed. An advanced circuit is devised to eliminate these deteriorations. It is verified that the experimental results agree well with the theoretical results obtained using FFT (fast Fourier transform) analysis. A resonant-type five-level PWM inverter is also presented

Keywords

battery chargers; fast Fourier transforms; invertors; load (electric); network analysis; photovoltaic power systems; pulse width modulation; FFT; battery chargers; charging; earth level; fast Fourier transform; five-level PWM inverter; inductive load; network analysis; photovoltaic power system; secondary cells; sinusoidal; storage battery; Batteries; Circuits; Earth; Fast Fourier transforms; Photovoltaic systems; Pulse inverters; Pulse power systems; Pulse width modulation inverters; Resonance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on

Conference_Location

Kobe

Print_ISBN

0-87942-688-8

Type

conf

DOI

10.1109/IECON.1991.239290

Filename

239290