A GaN-based Power Factor Correction Converter: for Electric Vehicle Charging

Because of its superior conduction and switching performance, and falling price, Gallium Nitride (GaN) power semiconductor device is expected to bring improvements to the power electronics system, including higher efficiency and higher power density. How will the new semiconductor device benefit the rapidly growing Electric Vehicle (EV) charging...

Control Challenges and Solutions for Power Factor Correction

In this thesis, the design and implementation of an improved current controller for grid-tied converters is discussed. Using this improved current controller, a power factor correction test platform achieves practically zero AC and DC error in steady-state. The power factor corrector accomplishes this by utilizing the parallel combination of a...

Low-cost uni-directional PFC for 3-phase systems

Power consumed by any equipment connected to the grid must be regulated to facilitate the reliable and efficient operation of the grid and for smooth equipment operation of other consumers. Power factor is one of the major power quality measurement tool. All the electrical equipment connected to the grid must comply with the power factor limits...

A MHz Switching Active Clamp Flyback Converter as a Power Factor Correction Stage for Lighting

A driver with high power factor, high efficiency and safety isolation are more attractive in the lighting application. Flyback is an ideal choice to be the power factor stage in LED driver. But one of the most difficulty in flyback topology is the energy stored in its leakage inductance. This part of the energy will introduce very high voltage...