A less sensor control method for standalone small wind energy using Permanent Magnet Synchronous Generator

This paper proposes a new control strategy using less number of sensors for variable speed wind energy conversion system (WECS). Maximum Power Point Tracking (MPPT) algorithm, and near unity power factor correction control (UPF) are achieved at the generator side using direct driven Permanent Magnet Synchronous Generator (PMSG). The PMSG operates at variable wind speed connected to a full controlled active rectifier employing both unity power factor and MPPT control. The dc-link voltage is controlled to be fixed using a storage system through bi-directional power flow link to achieve power flow control with MPPT. Simple Hysteresis control is applied for the fully controlled active rectifier. The full system has been analyzed and simulated using PSIM to examine its performance. Then, a prototype has been built and tested in the laboratory. Some selected experimental results are provided for the validation of the system.