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 interphase 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 alpha beta-frame HCC and the traditional HCC.