Varying duty cycle control for discontinuous conduction mode boost rectifiers

A novel control method for boost rectifiers to attenuate the low-order harmonics which are difficult to be removed by the input filter is presented in this paper. The duty cycle within a fixed switching period is varied such that the rectifier is operated at the boundary of the discontinuous and con...

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Bibliographic Details
Main Authors: Yu-Kang Lo, Sheng-Yuan Ou, Tzu-Herng Song
Format: Conference Proceeding
Language:English
Subjects:
Circuits
Inductors
Power harmonic filters
Power system harmonics
Pulse width modulation
Pulse width modulation converters
Reactive power
Rectifiers
Switching frequency
Voltage control
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Summary:A novel control method for boost rectifiers to attenuate the low-order harmonics which are difficult to be removed by the input filter is presented in this paper. The duty cycle within a fixed switching period is varied such that the rectifier is operated at the boundary of the discontinuous and continuous conduction modes. Compared to the traditional discontinuous conduction control with a constant duty cycle, the proposed control strategy features advantages such as a higher power factor or equivalently, a smaller input filter, and a higher output voltage. Experimental results show good conformation with the theoretical analysis.
DOI:10.1109/PEDS.2001.975301