A Method for Balancing a Single-Phase Loaded Three-Phase Induction Generator

Energies

Yaw-Juen Wang¹ 

[1] Graduate School of Engineering Science and Technology, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan; E-Mail

关键词: induction generator;    unbalance;    single-phase load;   

DOI  :  10.3390/en5093534

来源: mdpi

【 摘 要 】

When a three-phase induction generator (IG) supplies unbalanced loads, its terminal voltages and line currents are also unbalanced, which may cause the IG to overheat and need to be derated. A single-phase loaded self-excited induction generator (SEIG) works under most unfavorable load unbalance conditions. This paper proposes a three-capacitor circuit scheme and a method to find the values of the self-excitation capacitors that allow the SEIG to be balanced. The SEIG is modeled by a two-port network equivalent circuit that resolves the SEIG into its positive- and negative-sequence circuits associated with the self-excitation capacitors and the load. The network can then be analyzed by common AC circuit analysis techniques. Successful results for balancing the SEIG supplying a single-phase load have been achieved by properly choosing the values of the excitation capacitors. The proposed method has also been validated by experiments on a 0.37 kW SEIG.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.