High performance four-quadrant switched reluctance traction drive based on DITC

This work presents the development of a four-quadrant switched reluctance drive for traction applications, in which high performance over a wide operation range in all quadrants is required. Comprehensive fundamentals and analysis for operating switched reluctance machines in four quadrants are presented. The drive is designed based on a high dynamic control strategy called direct instantaneous torque control (DITC). The functionality of DITC will be discussed in detail for both motoring and generating operation. A methodology to design switching pattern for the hysteresis torque controllers for switched reluctance machines is proposed. A controller was prototyped and tested on a DSP/FPGA development platform. A high performance operation in both motoring and generating mode is validated by experimental results presented at the end of this paper.