New energy self-synchronizing voltage source control method and system

The invention relates to the field of new energy grid-connected inverter control, in particular to a new energy self-synchronizing voltage source control method and system. The method comprises the steps that a real-time current signal is acquired, resonance detection is carried out on the real-time current signal based on a resonance detection model, resonance frequencies are acquired, and the resonance frequencies comprise the positive-sequence current resonance frequency of positive-sequence current and the negative-sequence current resonance frequency of negative-sequence current; suppressing a corresponding positive sequence resonant component and a corresponding negative sequence resonant component in the positive sequence current resonant frequency and the negative sequence current resonant frequency to obtain a positive sequence current component and a negative sequence current component; and suppressing the negative sequence current component based on a resonance controller. 本发明涉及新能源并网逆变器控制领域，为一种新能源自