This paper gives a detail modelling of six phase Permanent magnet synchronous machine (PMSM) and complete simulation of it’s drive system and performance analysis in different speed with PI controller. proposed method can be used easily in many applications like ship propulsion, Hybrid electric vehicle, Washing machine, Ship propulsion, Traction, Spinning mills, Aerospace etc. Proportional-Integral controller is mostly used in drives system. The combination of proportional and integral is important to increase the speed of response and also to eliminate the steady state error. Performance analysis with proportional (Kp) and integral (Ki) constant with different speeds and constant torque is studied in the drive system.