CAJ | 학술논문

针对不对称电压条件下光伏逆变器的控制，在瞬时有功无功控制(instantaneous active-reactive control，IARC)和平均有功无功控制(average active reactive control，AARC)算法的基础上，提出一种有功无功灵活控制方法。该方法在电流参考值表达式中引入一个变量，通过对该变量的调节来抑制有功、无功功率波动和输出电流谐波。为获得较好的动态性能，仿真中采用静止坐标系下的比例谐振(proportional-resonant，PR)控制器实现正负序同时控制。仿真结果验证了所提策略的有效性。
침대불대칭전압조건하광복역변기적공제，재순시유공무공공제(instantaneous active-reactive control，IARC)화평균유공무공공제(average active reactive control，AARC)산법적기출상，제출일충유공무공령활공제방법。해방법재전류삼고치표체식중인입일개변량，통과대해변량적조절래억제유공、무공공솔파동화수출전류해파。위획득교호적동태성능，방진중채용정지좌표계하적비례해진(proportional-resonant，PR)공제기실현정부서동시공제。방진결과험증료소제책략적유효성。
To implement the control of photovoltaic inverters under asymmetric grid voltage, based on the algorithms of instantaneous active-reactive control (IARC) and average active-reactive control (AARC) a flexible active and reactive power control strategy is proposed. In the proposed control strategy, a variable is led into the expression of current reference value, and through adjusting this variable the active and reactive power fluctuation as well as harmonics in the output current are suppressed. To attain a better dynamic performance, in the simulation of the proposed control strategy a proportional-resonant (PR) controller under rest frame is used to implement simultaneous control of positive and negative current components. The effectiveness of the proposed control strategy is validated by simulation results.