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Parameter Space and Rotor Angle Stability Control of Virtual Synchronous Machine

The virtual synchronous machine technology is able to control the inverter to mimic the behaviors of the traditional synchronous generator. In this paper, the rotor angle stability is thoroughly analyzed under the classical nonlinear dynamic model of the synchronous generator in a single machine (inverter) infinite bus system. Possible situations covering the global parameter space are presented, analyzed and verified through simulations. Furthermore, the idea of global bifurcation structure shaping control is proposed, which can eliminate the attractor that causes the transient instability under emergency and thus guarantee the stability.