Parallel inverters with interleaving phase shift for permanent magnet synchronous machine (PMSM) are proposed in this thesis. The switching signals with interleaving phase shift are generated by DSP for the parallel inverters. The total current ripple can be significantly reduced by using parallel inverters with interleaving phase shift so that the switching frequency can be reduced and the power system EMI problem can be alleviated as well. Speed and current control loops are achieved by using PI Controller.