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In this paper, it is shown that in the three-phase six-switch boost power factor correction 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 compared with that of proportional and integral compensation. It is also shown that P compensation with input-voltage 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 injection, in addition to enabling the output-voltage regulation in a wider input-voltage range, also improves the THD of the input currents.
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Huber et al. (2015) studied this question.
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