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A random pulse-width modulated inverter based on programmed PWM with lower-order harmonics elimination is presented in this paper. In motor drive applications, the high switching frequencies often results in acoustic noises, which make operator feel uncomfortable. The programmed PWM are used to solve nonlinear equation eliminating harmonics with initial value obtained by equal area PWM to obtain the...
A novel design and implementation of programmed PWM inverters to eliminate selected harmonics are presented in this paper. Switching patterns without low-order harmonics can be obtained by numerical techniques. Equal-area switching angles as initial values in numerical computation can guarantee the convergence of solving nonlinear equations. A well-designed circuit to generate switching patterns for...
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