Abstract: When the new energy vehicle electronic scroll compressor runs at low speed, the speed fluctuation is caused by load mutation. A modified low speed torque compensation control method combining active destabilization resistance control(ADRC) and sliding mode observer(SMO) is presented. The load torque observer is used for tracking the load changes, the torque compensation is carried out for the load value, the ADRC is used for planning the speed adjuster. On this basis, the new approach law observer with phase locked loop free change of speed is planned, and its stableness is confirmed by Lyapunov theory. Emulation and results reveal that the new observer can track the load value accurately, compared with traditional low speed torque compensation control, the control way can compensate the destabilization of the system in real time and reduce the speed fluctuation range from 4.0% to 1.6%, and remarkably elevate the stability of the vehicle electronic scroll compressor at low speed.