An optimal on-line-tuning current regulator for high-power IGBT converters

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 nonsinusoida...

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Bibliographic Details
Published in:IEEE transactions on industry applications 1999-09, Vol.35 (5), p.1132-1140
Main Authors: Mouton, H.D.T., Enslin, J.H.R.
Format: Article
Language:English
Subjects:
Electric potential
Filters
Floating point arithmetic
Harmonics
Industry Applications Society
Insulated gate bipolar transistors
Inverters
Optimal control
Optimization
Power quality
Pulse width modulation
Pulse width modulation inverters
Regulators
Strategy
Switching loss
Voltage
Voltage control
Waveforms
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Description
Summary: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.
ISSN:0093-9994
1939-9367
DOI:10.1109/28.793375