Design and implementation of the optimized digital controller with the simplified control algorithm for boost power factor correction converter

Abstract

Abstract:The design and implementation of a digital controller for a boost power factor correction (PFC) converter under continuous current mode is presented to reduce the harmonic distortion. Based on the circuit structure of boost PFC converter, the total digital control loop is simply implemented to improve the power factor of converter and reduce the calculation burden of digital controller. Meanwhile, the optimized digital pulse width modulator (DPWM) is adopted to improve the regulation performance of digital controller. The boost PFC converter with the proposed digital contrller has been implemented via the FPGA platform, and experimental results indicate that the digital PFC converter with the proposed digital controller can aim high regulation linearity, power factor and output stability.

Transmission characteristics analysis of an MCR-WPT system with SP resonance structure based on harmonic current influence

“…Aiming at reducing the THD and increasing the transmission characteristics, in this paper, the traditional converter with diode and full-bridge rectifier is replaced by a dual-boost power factor correction (PFC) structure designed on the transmitter side according to the output power. The dual-boost PFC structure consists of two basic boost single circuits in parallel, and a staggered conduction method is adopted [26]. The inductance ripple current of each branch is interleaved to reduce the harmonic influence of input current on transmission characteristics.…”

Adaptive total sliding mode control for the current of power factor correction circuit

“…A large number of harmonics current will be generated in ac-side, when uncontrolled rectifier bridge is used in charging devices of electric vehicles, which has negative effect on the load as well as components of the main circuit [1]. Power factor correction (PFC) circuit force the input current to track the voltage waveform in the power supply network, so as to achieve the targets containing sinusoidal input current, unity power factor in input side and stable DC output voltage, finally, electric power transformation efficiency is improved [2]. Therefore, in order to improve the charging performance of electric vehicles and reduce impact to the power quality of utility grid, PFC plays a very important role in AC/DC converter [3].…”