A Novel Hysteresis Current Control Scheme in Synchronous dq-Frame for PMSM

This paper proposes a novel hysteresis current control (HCC) scheme in synchronous dq-frame for permanent magnet synchronous motor (PMSM). The space vector tables are conceived directly based on a first order approximation of the voltage equation in space format. Constant sampling and space vector pulse width modulation (SVPWM) technique are applied to avoid uncertain high switching frequency and inter-phase dependency in traditional HCC. The zero-vectors are selected properly to further decrease switching frequency. 2-level and 3-level switching tables are attained due to the idea, and simulations are performed to compare them. More simulations show the differences among the proposed scheme, stationary αβ-frame HCC and the traditional HCC.