A new scheme for dispersed pulse modulation in DC link of the zero switching loss inverter

Author

Naigang, Hong

Author_Institution

Dept. of Autom., East China Inst. of Metall., Anhui, China

fYear

1996

fDate

2-6 Dec 1996

Firstpage

257

Lastpage

260

Abstract

A new scheme of zero switching loss inverter in which the zero voltage time of DC link is controllable was presented. The principle that capacitor discharging clamps the voltage across DC link was applied to make the inverter switch under the condition of zero voltage, with switching loss being zero. This scheme has a number of advantages over other schemes of zero switching loss inverter, such as: the avoidance of high voltage problem caused by DC link resonating, the controllability of zero voltage time of DC link, convenient adaptability for different modulation strategies of inverter, simpler circuit structure, and so on. The working principle of circuit was introduced and the relations between zero voltage hold time and circuit parameters was analyzed. The results of test and simulation verified the principle of the scheme

Keywords

circuit analysis computing; invertors; losses; pulse modulation; DC link; capacitor discharging; circuit parameters; circuit structure; dispersed pulse modulation; modulation strategies; zero switching loss inverter; zero voltage hold time; Capacitors; Circuits; Clamps; Controllability; Inverters; Pulse modulation; Switches; Switching loss; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 1996. (ICIT '96), Proceedings of The IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-3104-4

Type

conf

DOI

10.1109/ICIT.1996.601585

Filename

601585