Title :
An optimal on-line-tuning current regulator for high-power IGBT converters
Author :
Mouton, Hendrik du Toit ; Enslin, Johan H R
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
Abstract :
This paper presents a new optimal current controller for high-power voltage-source inverters. The aim of the controller is to optimize the harmonic content of the output voltage or current waveform, while maintaining acceptable losses in the inverter. It is suited to both sinusoidal and nonsinusoidal current references and is computationally inexpensive. The paper presents a description of the control strategy, followed by numerical simulations and a practical evaluation using a floating-point digital signal processor. By using this new optimal control strategy, a reduction of 30%-40% in the harmonic content of the output voltage waveform was achieved, while maintaining constant switching losses
Keywords :
digital signal processing chips; electric current control; insulated gate bipolar transistors; invertors; losses; optimal control; power conversion harmonics; switching circuits; constant switching losses; floating-point digital signal processor; harmonic content optimisation; high-power IGBT converters; losses; nonsinusoidal current references; optimal on-line-tuning current regulator; output current waveform; output voltage waveform; sinusoidal current references; voltage-source inverters; Filters; Industry Applications Society; Insulated gate bipolar transistors; Optimal control; Power quality; Pulse width modulation; Pulse width modulation inverters; Regulators; Switching loss; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
