Method of Higher Harmonic Components Compensation in the Output Voltage Spectrum of the Starter-Generator System of the Aircraft

The article presents method of higher harmonic components compensation in the output voltage spectrum of the starter-generator system of the aircraft operating in the electric power generation mode. A mathematical model of the starter-generator system is proposed. The equivalent circuit of the system with current feedback of the voltage source inverter (VSI) and with load voltage feedback is presented. The equations for calculating output voltage for the investigated system are derived. The characteristic of the amplitude of the higher harmonics of the output voltage versus VSI transfer factor characteristic is obtained. The output voltage spectrum and the cycloconverter current spectrum when the VSI is turned on in parallel are presented. The output voltage total harmonic distortion when the VSI is turned on in parallel is determined.