Title :
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
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;
Conference_Titel :
Industrial Electronics (ISIE), 2012 IEEE International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-0159-6
Electronic_ISBN :
2163-5137
DOI :
10.1109/ISIE.2012.6237135
