A Single-Phase Utility-Interface Circuit without any AC Inductor nor EMI Filter

Author

Fujita, Hideaki

Author_Institution

Tokyo Inst. of Technol., Tokyo

fYear

2008

fDate

5-9 Oct. 2008

Firstpage

1

Lastpage

7

Abstract

This paper proposes a single-phase utility-interface circuit without any ac inductor nor EMI filter to eliminate switching voltage/current ripples and electro-magnetic noises. The main circuit of the proposed circuit consists of a diode-clamped linear amplifier (DCLA) and a voltage balancing circuit. The DCLA has a circuit configuration similar with a diode- clamped multi-level inverter, except for using complimentary MOSFETs as the power devices. As a result, the DCLA makes it possible to generate a sinusoidal output voltage without any ac filter. This paper presents new control methods of the output voltage and current to connect the DCLA with the utility grid. The experimental results show a power conversion efficiency as high as 93% and a current THD less than 2%.

Keywords

MOSFET; amplifiers; equivalent circuits; MOSFET; current ripples; diode-clamped linear amplifier; electromagnetic noises; single-phase utility-interface circuit; switching voltage; utility grid; voltage balancing circuit; AC generators; Circuit noise; Diodes; Electromagnetic interference; Filters; Inductors; Inverters; MOSFETs; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE

Conference_Location

Edmonton, Alta.

ISSN

0197-2618

Print_ISBN

978-1-4244-2278-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/08IAS.2008.325

Filename

4659113