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The paper derives a closed-form analytical approximation of the output currents harmonic spectra for the three-phase neutral-point inverters under the action of hysteresis current control. The model is an extension of the recently developed model for single-phase two-level hysteresis inverters. The model derives the instantaneous frequency of the inverter and then uses it to approximate the error...
The paper derives a closed-form analytical approximation of the output current harmonic spectrum for the three-level single-phase inverters under the action of hysteresis current control. The error current harmonic spectrum is directly calculated from the system and controller parameters. The analytical approach consists of deriving the instantaneous frequency of the error current and then approximating...
Harmonics and switching frequency cause a major problem in power system. A novel harmonic elimination technique and low switching frequency in a three-phase pulse width modulation (PWM) inverter are proposed in this paper. This inverter is associated with a LC filter. The technique determines the commutation angles based by solving a set of nonlinear system equations. This commutation angles are determined...
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