In view of active supporting and current control problems under connected network model,propose self-synchronizing voltage source control method of new energy connected with inverters.First,based on active and reac-tive powers of the system,adopt frequency with self-synchroniing characteristic and the active supporting control method of volgtage.Second,adopt balanced current control based on PIR regulator.On the one hand regulate the in-pedance characteristic between internal potential and electric network voltage of the new energy connected with in-verters;on the other hand increase the electric network unbalance and the current control ability under disturbance condition.In addition,propose voltage antibreakdown control strategy on DC side voltage,which can effectively be used in photovoltaic self-synchronizing voltage source system and improve photovoltaic battery output voltage stabili-ty.The simulation and experimental results show that the proposed method gives consideration to the electric network self-synchronizing characteristic and the current control ability、optimize three-phase unbalance and current quality under disturbance and inirease the whole performance of the new energy connected with inverters.
关键词
新能源发电/并网逆变器/自同步电压源控制/平衡电流控制/防崩溃控制
Key words
new energy generation/connected inverter/self-synchronizing voltage source control/balance current control/anti-breakdown control
维普
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