Solving nonlinear cost function for optimal PWM strategy

Abstract

It is difficult to solve the nonlinear cost function (CF) for selected harmonic elimination pulse width modulation (SHE PWM) strategy. It is extremely important to have a good initial guess before solving the CF. In this paper, a new algorithm for solving the CF on a mainframe computer is explored. A new auxiliary algorithm to predict the solution of the CF with a large degree of freedom is proposed. At the same time, an algorithm is established for DSP-based microprocessors to generate essentially satisfying switching patterns.<>