Performance Comparison of PI and P Compensation in DSP-Based Average-Current-Controlled Three-Phase Six-Switch Boost PFC Rectifier

Laszlo Huber, Misha Kumar, Milan M. Jovanovic
2015 IEEE transactions on power electronics  
In this paper, it is shown that in the three-phase sixswitch boost PFC rectifier with average-current control with mismatched input-voltage and input-current sensing gains as well as offset errors in input-voltage and input-current sensing, the current controller with proportional (P) compensation exhibits lower total harmonic distortion (THD) and higher power factor (PF) compared with that of proportional and integral (PI) compensation. It is also shown that P compensation with inputvoltage
more » ... ith inputvoltage feedforward is effective in improving output-voltage transient response with respect to input-voltage changes only if duty-cycle feedforward is also implemented. Finally, it is shown that zero-sequence-signal (ZSS) injection, in addition to enabling the output-voltage regulation in a wider input-voltage range, also improves the THD of the input currents. Index Terms -Three-phase six-switch boost PFC rectifier, average-current control, P compensation, PI compensation, voltage feedforward (VFF), duty-cycle feedforward (DFF), zerosequence signal (ZSS) injection, mismatched sensing gains, offset errors, total harmonic distortion (THD), power factor (PF). 0885-8993 (c)
doi:10.1109/tpel.2015.2389654 fatcat:3aikzai4tffe3pglkbw4ofw6ni