Balanced control waveform for reducing inverter harmonics

摘要: A particular control waveform actuates the half-bridge switching elements of a three-phase power inverter in such manner as to balance harmonic cancellation between notching and low impedance filtering obtaining substantial sinusoidal output signal. The allows small amount lower order harmonics which inherently decreases higher generated by notches so that filter, e.g., five percent can be used eliminates need for voltage regulation under various current loads yet both unregulated fluxations overall content signal is well within acceptable tolerances use an electrical utility or like. At same time, employs relatively per cycle rate minimizes number off-on transitions each high-current, solid state switches thereby retaining high efficiency.