A soft switching inverter module with modified DC-link circuit for high frequency DC-AC power conversion

Author

Shireen, Wajiha ; Kulkarni, Rahul A.

Author_Institution

Coll. of Technol., Houston Univ., USA

Volume

1

fYear

2003

fDate

9-13 Feb. 2003

Firstpage

507

Abstract

This paper proposes an improved DC-link circuit for soft switching inverters with fewer components (two auxiliary switches) involving simpler control. The operation principle and control arrangement of the modified DC-link circuit are explained. The experimental results from a 500 W laboratory prototype with a R-L load validate the operation of the proposed DC-link circuit. The modified DC-link circuit is then used to supply power to a single-phase full bridge PWM inverter with a 110 V, 60 Hz half horsepower capacitor start motor. Experimental results from the laboratory setup verify the feasibility of the proposed DC-link circuit in achieving soft switching in PWM inverters.

Keywords

PWM invertors; bridge circuits; capacitor motors; fractional-horsepower motors; switching convertors; 0.5 hp; 110 V; 20 ohm; 500 W; 60 Hz; PWM inverters; R-L load; auxiliary switches; half horsepower capacitor start motor; high frequency DC-AC power conversion; modified DC-link circuit; quasi-resonant converter; simpler control; single-phase full bridge PWM inverter; soft switching inverter module; Bridge circuits; Frequency conversion; Laboratories; Power conversion; Power supplies; Prototypes; Pulse width modulation inverters; Switched capacitor circuits; Switches; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE

Conference_Location

Miami Beach, FL, USA

Print_ISBN

0-7803-7768-0

Type

conf

DOI

10.1109/APEC.2003.1179260

Filename

1179260