Research on optimizing control of high-power dual-inverter drive system

Author

Cen, Qi ; Xie, Wei ; Lu, Yingjuan

Author_Institution

Dept. of Electr. Eng., Shanghai Maritime Univ., Shanghai, China

fYear

2012

fDate

28-31 May 2012

Firstpage

486

Lastpage

489

Abstract

The superiority of Selective Harmonics Elimination Pulse Width Modulation (SHEPWM) control technique for dual inverter drive system is mainly studied. The SHEPWM mathematical model is established and its solving method is given. By analyzing the harmonic components of DC side capacitor in dual inverter, an optimizing control strategy based on SHEPWM is put forward for the structure of dual inverter drive system. Finally a computer simulation with obtained switching angles is made. The capacity current waveforms before and after optimizing control was compared, as well as the DC side harmonics while in the case of asymmetric load and symmetric load between two inverters. By analysis, the optimization strategy is verified and the optimizing goal by eliminating the harmonics below 103th in the output voltage is achieved.

Keywords

PWM invertors; electric drives; mathematical analysis; optimal control; optimisation; power capacitors; DC sidecapacitor harmonic component analysis; SHEPWM control technique; asymmetric load; capacity current waveform; computer simulation; harmonic elimination; high-power dual-inverter drive system; mathematical model; optimizing control strategy; selective harmonic elimination pulse width modulation control technique; switching angle; symmetric load; Capacitors; Equations; Harmonic analysis; Inverters; Mathematical model; Pulse width modulation; Switches; Capacitance current; Dual inverter; Harmonic elimination; Newton-Raphson; Optimizing control; SHEPWM;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2012 IEEE International Symposium on

Conference_Location

Hangzhou

ISSN

2163-5137

Print_ISBN

978-1-4673-0159-6

Electronic_ISBN

2163-5137

Type

conf

DOI

10.1109/ISIE.2012.6237135

Filename

6237135