Black-Box Stability Analysis Method for Dual Parallel Pulse Power Load

The impedance of power source of the microgrid cannot be regarded as infinite, thus it may cause stability problems, especially when the load is a pulse power load. The black box method can not be well applied to pulse power load. To address this issue, a black-box stability analysis method for system with parallel pulse loads is proposed in this paper. Based on the stability condition of the system with single load, the stability condition of the system with parallel load is derived. Finally, 3-D fitting Bode plot are given to analyze the stability of the system with parallel load. Simulations results are given to verify the analysis results.