Taking Boeing 787 aircraft as an example, this paper introduces the composition and principle of environment control system of more electric aircraft, and discusses the feasibility and control mode of highspeed motor. Choosing high speed permanent magnet synchronous motor to drive the compressor, the control mode is SVPWM（Space Vector Pulse Width Modulation） technology. Double loop control strategy was designed to establish the complete highspeed motor driven compressor system.Then a closed loop system simulation modeling was built based on Matlab/Simulink software. The simulation results show that the system has a perfect function and strong stability.