Control Method for TCM Hysteresis Current Inverter with Variable Input Voltage
In order to solve the problem of increasing Total Harmonic Distortion and switching loss of Triangular Current Mode inverters near zero crossing due to high switching frequency,a quasi-constant frequency control method with varying input voltage is proposed.The maximum switching frequency of TCM current source inverter is limited by controlling the front-end input voltage,and the harmonic distortion rate of grid-connected current is reduced.Simulink was used to build a simulation model and FFT analysis of grid-connected current was carried out.The results showed that the THD of grid-connected current decreased by 0.02%compared with traditional TCM modulation method,which verified the feasibility of the proposed scheme.
inverterTCMhysteresis current controlsoft-switching
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维普
