Introduction

1. Wind Energy Conversion System Andrew Brown, Ali Gokal, Basheer Qattum Advisors: Dr. Woonki Na, Dr. Brian Huggins Introduction Three-Phase Diode Rectifier Grid-tie Inverter A single phase grid-tie inverter (GTI) is a unique type of inverter that converts DC into AC in which the output is fed into an existing electrical grid. A rectifier is an electrical device that converts AC into DC. The purpose of this project is to design and implement a wind energy power conversion system. The system will convert the mechanical energy from a wind turbine into electrical energy on a 1kW small scale system. This system consists of a three-phase generator, followed by a three-phase diode rectifier, connected to a two-channel interleaved boost converter, and finally a single phase inverter system. The boost converter and inverter controllers are realized with a Texas Instruments 32-bit fixed point TMS320F2812 Digital Signal Processor board. V = I*R Vo=(1.35Vin – VDiode) P = I*V Value of capacitor to ensure clear signal C=(Vp/2*f*Vr) =534μF Therefore we used 1.5mF Actual Rectifier in lab PSIM Model of Rectifier PSIM Model of Inverter Actual Inverter in lab PSIM Simulation of Inverter Boost Converter Controller PSIM Model of Overall System In this system, maximum power point tracking (MPPT) controller was used in order to output maximum power regardless of the input conditions. Output of DC generator after 3phase diode rectifier w/1.5mF Cap Output of generator after 3phase diode rectifier without capacitor filter System Diagram of the MPPT Controller Boost Converter The boost converter takes in the rectified DC voltage from the three-phase rectifier and amplifies voltage. The boost converters is controlled by a DSP board which will handle the switching of the IGBT. Wind Distribution Across the US Top-level System Diagram DSP MATLAB Simulink for Controller Permanent Magnet Generator PSIM Model of Boost Converters Vo=Vin/(1-D), or for more accurate values, Vo= {[(Vin-VIGBT*D)/(1-D)] – VDiode} Actual DC Motor in lab Actual Boost Converter lab Anaheim Automation BLZ363S Max speed 3600 RPM Voltage 160 V Power 750 W Table 1.2 Boost Converter Data Table 1.1 Brushless DC Data with Rectifier MPPT Algorithm Flowchart Conclusion Using small signal model of the system the voltage and current controller for the system can be easily designed. The proposed controllers, the generator, the boost converter, and inverter are successfully implemented in a small scale 1kW permanent magnet generator based wind energy conversion system with DSP. Brushless DC Data with Rectifier Inductor Current of Interleaved Boost Converter