【摘要】 在交流微网系统中逆变器作为分布式电源的输出接口装置是确保系统稳定运行和提高并网电能质量的重要环节。本文分析了交流微网单逆变器在离网状态下的控制策略,并利用控制框图的等效变换原则建立了微网单逆变器系统的受控源等效电路模型,基于模型分析得出逆变器在电压和电流控制器参数变化的情况下系统的等效电压增益的变化规律,为交流微网系统中的逆变器设计提供理论参考。更多还原

【Abstract】 In the alternating current micro grid system, the inverter is the interface device of distributed power supply output and an important part that ensures the system operates stably. The control strategy of micro grid single inverter is analyzed in the condition of off-grid status and by the equivalent conversion principle of control block diagram. The controlled source equivalent circuit model of micro single inverter system is established. Based on the model equivalent voltage changing rule of system is analyzed under the condition of the parameters of inverter voltage and current controller changing, and the analysis conclusion provides theoretical reference for design of the micro grid inverter.更多还原