NDLI: Damping of PWM Current-Source Rectifier Using a Hybrid Combination Approach

Content Provider	IEEE Xplore Digital Library
Author	Yun Wei Li Bin Wu Zargari, N.R. Wiseman, J.C. Xu, D.
Copyright Year	1986
Abstract	An inductor-capacitor (LC) filter is normally required at the input of a pulse-width modulation (PWM) current source rectifier (CSR), to assist in the commutation of switching devices and to mitigate line current harmonics. To dampen the LC resonance introduced by the input filter, an effective damping method is proposed in this paper by using a hybrid combination of a virtual harmonic resistive damper and a three-step control signal compensator. The virtual harmonic resistor, which is immune to system parameter variations, can dampen the LC resonance caused by an external disturbance or control command changes without affecting the fundamental power flow. But the high-pass filter used for fundamental component elimination leads to poor dynamics. Therefore, a proposed three-step compensator is inserted into the DC current closed-loop control path which can effectively eliminate the resonance within the control loop by shaping the modulation signal. Compared to the two-step Posicast controller, the proposed three-step compensator has significant implementation advantages in medium voltage CSRs, where a low switching frequency is needed. By using a hybrid combination approach, dynamics of the virtual harmonic resistor can be improved with the transient overshoot mitigated by the three-step compensator. At the same time, the parameter sensitivity of the three-step compensator can be reduced, as any residual resonant oscillations can be dampened by the virtual resistor. Simulation and experimental results are provided to verify the effectiveness of the proposed approach.
Sponsorship	IEEE Power Electronics Society
Starting Page	1383
Ending Page	1393
Page Count	11
File Size	1212332
File Format	PDF
ISSN	08858993
Volume Number	22
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Damping Rectifiers Power harmonic filters Resonance Resistors Shape control Space vector pulse width modulation Shock absorbers Power system harmonics virtual harmonic damper Active damping current source rectifier Posicast controller three-step compensator
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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