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Voltage Control of Synchronous Generator for Ships using a PMG Type Digital Automatic Voltage Regulator  

Yu, Dong-Hwan (성균관대 대학원 정보통신공학부)
Park, Sang-Hoon (성균관대 대학원 정보통신공학부)
Won, Chung-Yuen (성균관대 정보통신공학부)
Yu, Jae-Sung (효성 중공업연구소)
Lee, Sang-Seuk ((주)팩테크)
Ahn, Sung-Joon (성균관대 정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.1, 2009 , pp. 38-45 More about this Journal
Abstract
To get the constant output, synchronous generator field excitation is controlled by AVR(Automatic Voltage Regulator). Most of ships generator AVR uses the thyristor phase controlled rectifier. However this rectifier is difficult to realize that the fast control system because its control period is slower than MOSFET and IGBT type converter. Therefore, this paper deals with PMG(Permanent Magnet Generator) type digital AVR using MOSFET switch for ships synchronous generator. The composition of this digital AVR is very simple, the generator is under the short circuit accident, the output voltage becomes zero state and AVR can not operate. Thus generator is required to add CBC(Current Boosting Circuit) in an excitation circuit to flow output current. The performance of the proposed system is evaluated on a 10[kVA] experimental prototype circuit in place of real ships generator.
Keywords
Synchronous Generator; Digital AVR; Excitation circuit; PMG type; Current Boosting Circuit;
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