Design High-Gain Boost PFC Converter

About the project

Design and simulate a Single-phase High-Gain Boost Power Factor Correction (PFC) converter with closed-loop control using MATLAB/Simulink. The converter is designed to convert a single-phase AC supply into a regulated DC output while maintaining a high power factor, low input current harmonics, and high conversion efficiency. The closed-loop control strategy should ensure accurate output-voltage regulation and proper input-current shaping under varying operating conditions. ||> Design Specifications -> Input Voltage - 230 V RMS, 50 Hz -> Output Voltage - 400 V DC -> Output Power - 2 kW -> Converter Topology - Boost Converter -> Switching Frequency - 100 kHz -> Control Method - Closed-Loop Voltage and Current Control -> Simulation Platform - MATLAB/Simulink ||> Objectives -> Design a single-phase High-Gain Boost PFC converter capable of producing a regulated 400 V DC output. -> Implement a closed-loop control scheme to maintain output-voltage regulation under varying load conditions. -> Shape the input current to follow the input voltage waveform and achieve near-unity power factor. -> Minimize Total Harmonic Distortion (THD) of the input current. -> Analyze the converter performance under steady-state and transient operating conditions. -> Evaluate efficiency, voltage regulation, and power-quality performance. ||> Scope of Work -> Mathematical modeling of the High-Gain Boost PFC converter. -> Design and sizing of passive and active components. -> Development of a dual-loop control system for voltage regulation and current shaping. -> Generation of PWM gating signals for converter operation. -> MATLAB/Simulink implementation and simulation. -> Analysis of startup response, load variations, and output-voltage regulation. -> Performance evaluation in terms of power factor, THD, efficiency, and ripple. ||> Closed-Loop Control Strategy == Outer Voltage Loop -> Continuously monitors the output DC voltage. -> Compares the measured output voltage with the reference value of 400 V. -> A PI controller processes the voltage error and generates the reference current magnitude. == Inner Current Loop -> Shapes the input current to follow the rectified input-voltage waveform. -> Ensures sinusoidal input current and near-unity power factor. -> A PI controller regulates the inductor current and generates the duty-cycle command. ||> PWM Generation -> The controller output is compared with a high-frequency carrier signal. -> PWM pulses are generated at 100 kHz to drive the converter switch. ||> Expected Results -> Regulated 400 V DC output voltage. -> Stable closed-loop operation. -> Near-sinusoidal input current waveform. -> Power factor close to unity (≈0.99 or higher). -> Low input current THD. -> Fast dynamic response to load disturbances. -> High conversion efficiency. ||> Software Tool MATLAB/Simulink will be used for: -> Converter modeling -> Closed-loop controller design -> PWM generation -> Power-factor analysis -> THD analysis -> Dynamic-performance evaluation ||> Performance Parameters to be Evaluated -> Output voltage regulation -> Power factor -> Input current THD -> Converter efficiency -> Inductor current ripple -> Output voltage ripple -> Startup performance -> Dynamic response to load changes

Skills required