NDLI: A study based on DC chopper excitation system

Content Provider	IEEE Xplore Digital Library
Author	Guofei Zhang Huilin Wang
Copyright Year	2010
Description	Author affiliation: Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control, Ministry of Education, School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China (Guofei Zhang; Huilin Wang)
Abstract	A new self-shunt excitation control method has been brought in this paper, which is about how to use DC chopper that is composed with full controlled switch device IGBT to regulate exciting voltage. This new method replaces traditional method which is adopted controlled rectifier by thyristor. Exciting voltage refers from terminal voltage by exciting transformer, and then it goes through uncontrollable rectifier circuit and switches to DC voltage. This DC voltage is used for DC chopper. We can control duty cycle of IGBT to change output voltage and hold terminal voltage steady. In this paper, the conclusion of DC chopper output current proportioned with duty cycle is proved by simulation in PSCAD. And it also proves that it can maintain terminal voltage stability in steady state operation by the control of trigger angle of IGBT.
Starting Page	402
Ending Page	405
File Size	95813
Page Count	4
File Format	PDF
ISBN	9781424486540
e-ISBN	9789810863227
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-03
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Memetic Computing Society
Subject Keyword	Insulated gate bipolar transistors Electrodes Drive circuit Choppers DC chopper Trigger angle Field control Control systems Generators Power systems Voltage control
Content Type	Text
Resource Type	Article

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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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