Improvement of Input Current Quality in Switched Reluctance Motor Drive with Current Source Rectifier

SRM drives are ideal for many industrial applications but the poor power factor of this drive makes it not desirable especially considering the cost of energy is the major concern in these days. Therefore, SRM has to comply with power quality commitments before being certified for different applications which leads to demand for high performance SRM drives. In this study, a DSP-based 816 SRM equipped with an asymmetrical power converter with hysteresis current controller is established and its line drawn current quality and motor driving performance are evaluated experimentally. To improvement of input current quality of this drive, two-stage power converter which uses a Current Source Rectifier(CSR) as an input stage for the asymmetrical converter of the studied SRM are proposed Then, modeling and simulation of a 4KW, 816 SRM with experimental characteristics which uses a CSR as an input stage for the asymmetrical converter of the studied SRM are presented CSR switching employs the space-vector modulation method in matrix converters. Simulation of the whole SRM drive system is performed using MATLAB-Simulink where results fully comply with required conditions such as improving power factor and THD. Usage of CSR in SRM converter input results in eliminating dc link's capacitors. Copyright (C) 2009 Praise Worthy Prize S.r.l. - All rights reserved