||This dissertation proposed an advanced power factor correction circuit for sensor-less brush-less dc motor driver. At first, the comparison of permanent magnet synchronous motor and BLDCM is unveiled. Subsequently, a single phase BLDC fan motor with protection circuits incorporates Hall sensor control, sensor-less startup tactics, and several control strategies are step-by-step discussed. Furthermore, a sensor-less driver with current feedback for three-phase BLDC fan motor is developed, the scheme includes speed control strategy and vibration reduction, together with mathematical models of the three-phase BLDCM, summarize and validate the theories as well as practices with simulations and experiments.|
Secondly, renewable and sustainable energy theories are referred, the control and applications of BLDCM including stand-alone wind turbine generator, which covers various models, along with energy management and storage systems are designed.
In regard to the crucial theorem, power factor correction, discusses sequentially from switch mode power supply, Boost, and Buck converters to the complete PFC control circuit, their transfer functions, and equations. Afterwards, the pivotal part of this dissertation, the applications and control methods of PFC, encompass dual-Boost converter to raise PF, single-stage Buck converter PFC for light emitting diode driver circuits, and shunt-based semi-active PFC for PMSM driver which skillfully integrated the two researching categories, PFC and motor control, significantly attained the goals of high PF, accurate control, and wide applications.
Finally, the theoretical assumption and the expected objectives of these aforesaid approaches were verified and fulfilled with software simulations and experimental results. The innovative multithreaded human machine interface for motor remote control was also proposed.