Harmonic Programmed Modulation for High-Power Medium Voltage Energy Conversion: Formulation, Solving Approach, and Implementation

High-power (MW) energy conversion systems typically operate at much lower switching frequencies than low-power (kW-100 s kW) systems. For the former, harmonic issues are therefore crucial problems, which particularly require advanced modulation and control techniques. In this work, a comprehensive survey of the class of harmonic programmed pulsewidth modulation (HPPWM) techniques and a convenient and tailorable solution for fast construction are provided. The survey covers the principles, solving algorithms, and implementation aspects of the state-of-the-art HPPWM strategies. The unified construction scheme is concluded to assist scientists/engineers to tailor a proper HPPWM solution according to their demands. Their solving approaches and strategies to improve the performance of implementation are benchmarked and analyzed, which would provide a comprehensive guideline to ease the customized design. At the end, a discussion on the future development of HPPWM is provided.