关键词: 内置式永磁同步电机, 滑模观测器, 增程式电动汽车

Abstract: The performance of the driving system of Range Extender Electric Vehicles（REEV） is restricted by the internal parameter uncertainty and external disturbance in the driving process. The speed tracking problem is investigated for REEV driven by the Interior Permanent Magnet Synchronous Motors（IPMSM）. Firstly, the sliding mode speed controller based on the upper bounds of the disturbance is proposed. Then, in order to reduce chattering phenomenon, the sliding mode disturbance observer is investigated. Through disturbance estimation for feed-forward compensation, the sliding mode controller may take a smaller gain for switching functions without sacrificing disturbance rejection performance. Both simulation and experimental results in different maneuvers are demonstrated based on the ECE driving cycle to validate the control design. The high-level vehicle speed tracking performance, low-level sliding mode chattering in the test maneuvers are compared between the proposed observer based and disturbance upper bounds based control scheme, the speed tracking error can be decreased from±0.08 km/h to ±0.01 km/h with constant load and from 11.3 km/h to 1.6 km/h with time varying load.

Key words: Interior Permanent Magnet Synchronous Motor（IPMSM）, sliding mode observer, Range Extender Electric Vehicles（REEV）