科研之友
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摘要
This paper presents a new control method for a stand-alone wind-based induction generator system with constant frequency and adjustable output voltage. The proposed generator system consists of a six-phase cage-rotor induction machine with two separate three-phase stator windings and a three-phase static synchronous compensator (STATCOM). The first stator winding is fed by STATCOM and is used to excite the machine, while the second stator winding is connected to the generator external load. The main frequency of STATCOM is determined to be constant and equal to load-requested-frequency. Because the frequency of the induced emf in the second stator winding is same as this constant frequency, the generator output frequency is independent of the load power demand and rotor speed. The conventional PI controllers are used to regulate both the generator output terminal and STATCOM dc-link voltages. Some simulation and experimental results are presented to prove the validity and effectiveness of the proposed control method.
- 出版日期2016-10
