Abstract
In this paper investigates the influence of high frequency switching of power transistors of an autonomous voltage inverter on the distortion of the output quasi-sinusoidal signal. To solve the discovered problem, a modified autonomous voltage control algorithm is proposed, based on the use of different pulse-width modulation frequencies in one half cycle. The standard two-level sinusoidal pulse-width modulation is formed as a result of the intersection of the modulating sinusoid with the reference sawtooth signal. In classical pulse-width modulation, the ratio of the frequency of the reference signal to the modulated frequency is always constant and equal to an integer, i.e., this pulse-width modulation is synchronous. An algorithmic solution is proposed for the formation of a modified sinusoidal pulse-width modulation, when the frequency of the reference sawtooth signal during one period of the modulated sinusoid changes twice from a smaller value to a larger one and vice versa.
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Gulyaev, A., Ten, E., Fokin, D., Hohlin, A. (2020). Microprocessor Control System for a Three-Phase Voltage Inverter with a Modified Algorithm. In: Popovic, Z., Manakov, A., Breskich, V. (eds) VIII International Scientific Siberian Transport Forum. TransSiberia 2019. Advances in Intelligent Systems and Computing, vol 1115. Springer, Cham. https://doi.org/10.1007/978-3-030-37916-2_40
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DOI: https://doi.org/10.1007/978-3-030-37916-2_40
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