Abstract
Space Vector Modulation (SVM) approaches that decrease current ripples and switching losses of
voltage source inverters for automotive applications and their DSP implementation are presented in
this paper. To improve the quality of the energy delivered by the voltage source inverter (VSI), we
combine two modulation strategies; Random Space Vector Modulation (RSVM) and Discontinuous
Space Vector Modulation (DSVM). Randomisation is achieved by varying the switching frequency
randomly from one switching interval to another, discontinuities are introduced by clamping the
inverter's leg either to the positive or negative rail with the capacity to auto-adjust to the load
characteristics with a Scalable DSVM (SDSVM). This ensure the reduction of switching losses and
the effective switching frequency of the inverters. These algorithms are successfully implemented on
the TMS320F28335 DSP platform for two levels voltage source inverter feeding a permanent magnet
synchronous motor (PMSM) and experimental results are presented.