Maximum power point tracking control of IPMSG with loss minimization algorithm for wind energy conversion system

In the variable-speed generation system, the wind turbine can be operated at maximum power operating points by adjusting the shaft speed optimally. This paper presents a novel maximum power point tracking (MPPT) based control of interior permanent magnet synchronous generator (IPMSG) incorporating loss minimization algorithm. In the proposed method, without requiring the knowledge of wind speed, air density or turbine parameters, MPPT algorithm generates optimum speed command for speed control loop of vector controlled machine side converter. The MPPT algorithm uses the estimated active power output of the generator as its input and generates command speed so that maximum power is transferred to the dc-link. Additionally proposed control system incorporates loss minimization algorithm (LMA) to improve the efficiency. The performance of the proposed adaptive MPPT and LMA based control of IPMSG for WECS is tested in simulation at different wind speed conditions.