Syed Umer Asif, Hassan Issa, Amoglang Moemba
supervised by Dr. Bin Wu, FLC (Faculty Lab Coordinator and Advisor)
This project designed, simulated and implemented a 1.5kW, permanent magnet synchronous generator based wind energy conversion system. The prototype can be installed in smart homes and can be used to provide power to isolated lines to operate house hold appliances such as bulbs refrigerators etc. The system automatically produces constant voltage output in the power outlets while the turbine is running at variable speeds. The first step in the development of this system was to conduct a literature survey to identify the ideal components. Various available options were examined to select the most power efficient, robust and cost effective components for the commercial production of this prototype. The major operative components of the project included a Permanent magnet synchronous generator based energy set, a diode rectifier, a boost converter with constant voltage output control loop and a inverter. A DC motor simulating the wind turbine is mechanically coupled with the Permanent Magnet Synchronous Generator (PMSG) which produces balanced three phase voltage. This voltage is then converted into DC voltage using a three phase diode rectifier. Then the voltage is set to a specific value using a Proportional Integral controller (PI) which controls the duty cycles of the gating signals applied to the switching devices of the 2 level boost converter. After controlling the DC voltage it is then passed through a Sinusoidal Pulse Width Modulation (SPWM) inverter to invert the voltage into an AC voltage. Then a 2nd order LC filter designed to limit the Total Harmonic Distortion (THD) to 5% is then used. Design parameters were calculated and The proposed design was modeled in MATLAB Simulink. After considering the hardware design specifications the optimum devices were chosen. The hardware was implemented on Texas instrument power module microcontroller called The High Voltage Digital Motor Control (DMC) and Power Factor Correction (PFC) kit (TMDSHVMTRPFCKIT). The microcontroller includes all the required components of a boost converter, inverter. The programming was done using a fixed point DSP installed on the controller. After operating the boost converter modulated with controllable gating and the voltage source inverter the system was made compatible with energy set and tested on different speeds. The WECS can provide power to RLC loads with constant voltage. The application of this product includes installation in standalone loads such as rural, northern communities where high wind speeds make wind energy the optimum choice of energy, factories with individual isolated energy system, and isolated power lines in smart home etc.
Project targeted applications: The standalone WECS implemented are ideal for isolated power lines in smart homes for example in northern rural communities etc. The wind turbine model designed and implemented can produces a constant voltage output while the turbine is running at different speeds. The design can also be modified to provide power to the grid by slight modification and implementing a VOC.