Title: Assessment of excitation capacitance for a multiphase isolated self-excited induction generator for power generation
Authors: Alok Kumar Mohanty; Krishna Bihari Yadav
Addresses: Department of Electrical and Electronics Engineering, National Institute of Technology, Jamshedpur, Jharkhand, India ' Department of Electrical and Electronics Engineering, National Institute of Technology, Jamshedpur, Jharkhand, India
Abstract: Self-excited induction generators are used in remote places for electrical power generation from both conventional as well as non-conventional sources. An induction generator can operate as a capacitor-excited machine, provided the machine is driven beyond synchronous speed and a suitable capacitor is connected across its terminals. In this paper, a technique has been proposed to estimate the values of excitation capacitances to maintain desired terminal voltages in a multiphase induction generator. A mathematical model using nodal admittance technique of a six-phase induction generator has been analysed. Genetic algorithm technique is applied here to obtain the unknown parameters and the capacitance requirements to obtain desired terminal voltages under various operating conditions.
Keywords: multiphase induction generators; excitation capacitance; power generation; terminal voltages; mathematical modelling; nodal admittance.
International Journal of Power Electronics, 2017 Vol.8 No.2, pp.148 - 158
Received: 08 Dec 2015
Accepted: 20 Dec 2016
Published online: 08 Mar 2017 *