Simulation Design of Deadbeat Active Power Filter (APF)

This simulation focuses on the design of a deadbeat-controlled active power filter (APF), incorporating harmonic detection, current tracking components, and Z-domain-based SPWM modulation. The deadbeat control algorithm enables optimized APF performance by rapidly compensating for harmonic distortions and precisely tracking reference currents within minimal sampling periods. Key implementation aspects include: - Harmonic detection module utilizing Fast Fourier Transform (FFT) or instantaneous power theory algorithms to identify distortion components - Current tracking loop employing predictive deadbeat controllers that calculate required voltage vectors in one sampling cycle - Z-domain discrete modeling for SPWM modulation, implementing switching signals through difference equations and duty cycle calculations Through this simulation framework, engineers can analyze the operational principles and performance characteristics of deadbeat-controlled APFs, including dynamic response speed, harmonic suppression effectiveness, and stability margins. The design provides practical guidance for real-world applications in power quality improvement, with MATLAB/Simulink implementations typically involving Clarke/Park transformations, discrete PID controllers, and PWM generation blocks.