Wind Energy System Coupled with Bidirectional Quasi Z-Source Inverter for Motor applications Jaffarsadiqali A.1, Kumar P. Vinoth2, Suresh A.3 1Professor, Department of Electrical and Electrical Engineering, S.A. Engineering College, Chennai, Tamil Nadu, India 2Associate Professor, Department of Electrical and Electrical Engineering, S.A. Engineering College, Chennai, Tamil Nadu, India 3Professor, Department of Electrical and Electrical Engineering, S.A. Engineering College, Chennai, Tamil Nadu, India Online published on 4 June, 2019. Abstract A Bidirectional Quasi-Z-supply Inverter (BQZSI), using a controllable shoot-through insertion in running permanent magnet synchronous motor is proposed. This BQZSI is simple and exerts a direct control over the wind energy. In addition, this improves the efficiency of the voltage gain and reduces the total harmonic distortion. The Voltage Source Inverter (VSI) is used for Adjustable Speed Drives (ASD). The VSI normally calls for an additional boost converter. This supplementary converter will in turn, increase the cost and design complexity lowering the performance of the power conversion devices. Additionally, the voltage the drop will disrupt the conventional ASD systems, thereby shutting down the crucial loads and procedures. Hypothetically, the three sources-the unique Z-source, Quasi-Z-source, and embedded Z-source have limitless voltage gain. For every additional shoot through state, the commutation time of the semi-conductor switches increases which proportionately increase the switching losses. Therefore, to prevent the switching loss, appropriate placing of the shoot-through condition in the switching cycle becomes essential. To rectify this, an amalgamation of BQZSI with a method of maximum constant boost control procedure is proposed. This can be achieved with the help of voltage-driven quasi-Z source inverter with continuous conduction mode that is carried out at the input of the converter which will enhance the input voltage by making use of the more switching states with the help of shoot-through state insertion method. By using BQZSI, it is possible to handle the energy on both the sides and hence can be used with tiny movements on both the directions. This bidirectional converter will improve the performance of the Permanent Magnet Synchronous Motor drive. Top Keywords Bidirectional quasi-Z-source inverter (BQZSI), adjustable speed drives system application, PMSM. Top |