{'fraction_non_alphanumeric': 0.022357723577235773, 'fraction_numerical': 0.0, 'mean_word_length': 5.437908496732026, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A sinusoidal PWM control for four-quadrant single-phase drive system

DC drive systems controlled by pulse-width modulation (PWM) techniques are expected to replace the conventional phase-controlled systems. This is due to their simple control, high reliability, low cost and fast response. This paper presents the performance of a new four-quadrant single-phase DC motor drive system controlled by a sinusoidal PWM full-bridge DC-DC power converter and provides an active input power factor correction. Two different new sinusoidal PWM control techniques are considered; PWM with bipolar voltage switching and PWM with unipolar voltage switching. The overall system is simulated using PSpice where the different modes of operation, circuit voltages and currents and current harmonic spectrum are. presented. Experimental verification of the proposed system has been developed, where the motor performance characteristics and the converter waveforms have been presented and discussed.