30kW IPMSM Phase Current Sliding Mode Observer Control

A 30kW interpolation permanent magnet synchronous motor(IPMSM) for electric vehicles is discussed in this paper, the phase current sliding mode observer control strategy is proposed, by means of adjusting the current error between the target and practical phase current of the motor, and according which the designed current sliding mode observer output voltage. An improved index reaching law control method is shown, the switching gain can always maintain smaller and converges to zero when imported time-varying factors to it. The inherent shortcomings of the index reaching law can be overcome by using integral sliding surface with integral separation and importing the boundary layer method, effectively weakening the system buffeting.