CAJ | 학술논문

针对分布式发电系统中三相电压源型PWM并网逆变器控制问题，考虑滤波电感及其寄生电阻在实际中会发生不确定变化的情况以及外部干扰的存在，提出了并网逆变器输出功率的自适应控制方案，通过控制逆变器输出电流实现对输出功率有功和无功分量的解耦控制，实现了并网系统单位功率因数运行，同时保证直流母线电压的平稳。理论分析和仿真结果证明了所采取的控制策略的可行性和有效性。
침대분포식발전계통중삼상전압원형PWM병망역변기공제문제，고필려파전감급기기생전조재실제중회발생불학정변화적정황이급외부간우적존재，제출료병망역변기수출공솔적자괄응공제방안，통과공제역변기수출전류실현대수출공솔유공화무공분량적해우공제，실현료병망계통단위공솔인수운행，동시보증직류모선전압적평은。이론분석화방진결과증명료소채취적공제책략적가행성화유효성。
In this paper, the control problem of three-phase grid-connected PWM inverter in distributed generation system is in-vestigated. Considering the uncertain changes in the filter inductance and its parasitic resistance, an adaptive power control strategy is proposed. Decoupling control of active and reactive components of the inverter output power is achieved through the regulation of inverter output current, thus the power factor of inverter could achieve one and the dc bus voltage maintain steady at the same time. Both theoretical analysis and simulation results show the feasibility and effectiveness of the adopted control strategy.