A Sinusoidal PWM Method With Voltage Balancing Capability for Diode-Clamped Five-Level Converters

This paper presents a novel sinusoidal pulsewidth modulation control method with voltage balancing capability for the diode-clamped five-level rectifier/inverter system. A complete analysis of the voltage balance theory is given. The voltage balancing effects of the third harmonic offset injection t...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2009-05, Vol.45 (3), p.1028-1034
Main Authors: Pan, Zhiguo, Peng, Fang Zheng
Format: Article
Language:English
Subjects:
AC motor drive
active rectifier
Capacitors
Control systems
Converters
Diodes
Electric potential
Frequency
Inverters
Modulation
Motor drives
multilevel converter
Offsets
Pulse duration modulation
Pulse width modulation
Pulse width modulation converters
Pulse width modulation inverters
Rectifiers
Voltage
Voltage control
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Summary:This paper presents a novel sinusoidal pulsewidth modulation control method with voltage balancing capability for the diode-clamped five-level rectifier/inverter system. A complete analysis of the voltage balance theory is given. The voltage balancing effects of the third harmonic offset injection to all three-phase voltages are discussed. The proposed control utilizes the offset voltage to regulate the average currents flowing into and out of the inner junction without affecting output line-to-line voltage. The voltage balancing was achieved by selecting proper offset voltages for both sides. A five-level experimental system is built up and used to prove the theory.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2009.2018962