Efficient microprocessor real-time PWM drive control using regular-sampled harmonic minimisation techniques

The author developed harmonic minimised PWM regular sampled control strategies can be used as significantly reduce the computational requirements for real-time microprocessor-based PWM implementation. It is shown that this results in much simplified and more efficient microprocessor software/hardware requirements, leading to real-time PWM generation with minimised harmonics, suitable for drives and uninterruptible power supplies. It is shown how previously developed four-timer and single-timer microprocessor software implementations can be modified to take into account the special features and characteristics of harmonic minimised PWM to provide more efficient microprocessor PWM generation.