Four-leg inverter minimum switching loss modulation method considering neutral arm loss

The invention provides a four-leg inverter minimum switching loss modulation method considering neutral arm loss, which relates to the technical field of power electronics, and solves the problem that the current single discrete pulse width modulation method is limited by application conditions when realizing switching loss minimization. Based on the modulation wave of the neutral arm, by comparing the absolute values of the current amplitudes of the phases where the maximum voltage value and the minimum voltage value are located in the three-phase four-leg inverter, the four-leg modulation wave amplitude is clamped, and a pulse driving signal for controlling a switching tube in the three-phase four-leg inverter is obtained. Complex coordinate axis transformation and calculation are avoided, and the method does not depend on limited conditions such as phase factors, so that the switching loss of the three-phase four-leg inverter can be reduced to the greatest extent in practical application. 本发明提出一种考虑中性臂损耗的四桥