CAJ | 학술논문

并网控制系统存在电网电压扰动与电流控制环的耦合关系。首先在数学上详细分析和推导了电网电压扰动对电流控制的影响，证明了设计电流控制器时忽略电网电压扰动的不合理性。同时，通过采用解耦控制消除电网电压对电流环的扰动，提高系统的电流跟踪精度。最后，通过 PSIM软件进行仿真研究，并在一台基于 TMS320F2808的4 kVA 并网逆变器进行实验，仿真与实验表明了控制算法的可行性和优越性。
병망공제계통존재전망전압우동여전류공제배적우합관계。수선재수학상상세분석화추도료전망전압우동대전류공제적영향，증명료설계전류공제기시홀략전망전압우동적불합이성。동시，통과채용해우공제소제전망전압대전류배적우동，제고계통적전류근종정도。최후，통과 PSIM연건진행방진연구，병재일태기우 TMS320F2808적4 kVA 병망역변기진행실험，방진여실험표명료공제산법적가행성화우월성。
In the grid connection control system,there exists a coupling relationship between grid voltage disturbance and current control loop. Firstly,this paper presents a detailed mathematical analysis and deduction of the influence produced by grid voltage disturbance upon current control,and proves the irrationality of ignoring the disturbance during the process of designing the current controller.Then, decoupling control is applied to eliminate the disturbance of grid voltage upon the current loop and improve the current tracking accuracy of system.Finally,simulation is made through PSIM,and an experiment is made on a 4 kVA grid connection inverter based on TMS320F2808.The simulation and experiment results verify the feasibility and superiority of the proposed control algorithm.