Average-value modeling of hysteresis current controlled brushless DC motor drives

Current-regulated brushless dc motors have been widely used in electric vehicles. It is important to have accurate and numerically efficient models for system analysis and design. Hysteresis current control has significant advantages, such as fast dynamic response and robustness. This paper presents two new average-value models of motor drives for brushless dc machines under hysteresis current control. The new models are compared with a detailed model in terms of simulation runtime and rms error under a variety scenarios. The proposed average-value models accurately represent the behavior of the drive and can be used in modeling and design.