Capacitor voltage balancing techniques for a multi-pulse pulse rectifier with active injection

Two techniques are presented to balance the filter capacitor voltages of a multi-pulse rectifier with active injection operating on a variable frequency supply. The active injector consists of a low-rated, bidirectional switch that modifies the behaviour of a 12-pulse rectifier at either low or high...

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Bibliographic Details
Main Authors: Araujo-Vargas, I., Forsyth, A.J., Chivite-Zabalza, F.J.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Circuits
Electronic mail
Frequency
Power harmonic filters
Prototypes
Pulse width modulation
Rectifiers
Switches
Voltage
Online Access:Request full text
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Description
Summary:Two techniques are presented to balance the filter capacitor voltages of a multi-pulse rectifier with active injection operating on a variable frequency supply. The active injector consists of a low-rated, bidirectional switch that modifies the behaviour of a 12-pulse rectifier at either low or high-frequency, resulting in 24-pulse or multi-level PWM operation respectively. The operation of the rectifier and the injector, the practical issues that unbalance the capacitor voltages and the methods to correct this imbalance are explained together with experimental results obtained with a 4 kW prototype.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2009.4802686