CAJ | 학술논문

电流型PWM整流器采用LC环节来滤除谐波及帮助器件换流，LC型滤波器呈二阶特性，存在谐振尖峰，且电容阻尼较小，在控制系统存在扰动的情况下，容易引起电流波形畸变和振荡。提出了一种采用输入整形技术和电感电压反馈结合的控制策略，输入整形技术能够有效地抑制小阻尼系统的振荡，电感电压反馈控制能够在外部干扰抑制网侧电流波形畸变。结合两者的优点，可有效地解决电流型脉宽调制整流器网侧电流振荡和畸变。仿真验证了所提出的控制策略能够有效减少电流畸变，增加系统的稳定性，并具有一定工程实用性。
전류형PWM정류기채용LC배절래려제해파급방조기건환류，LC형려파기정이계특성，존재해진첨봉，차전용조니교소，재공제계통존재우동적정황하，용역인기전류파형기변화진탕。제출료일충채용수입정형기술화전감전압반궤결합적공제책략，수입정형기술능구유효지억제소조니계통적진탕，전감전압반궤공제능구재외부간우억제망측전류파형기변。결합량자적우점，가유효지해결전류형맥관조제정류기망측전류진탕화기변。방진험증료소제출적공제책략능구유효감소전류기변，증가계통적은정성，병구유일정공정실용성。
Current PWM rectifier links in the network side using LC devices help filter harmonics and commutation, LC type filter has second order characteristics, the presence of the resonance peak and the resistor of capacitance is also very small, which is easy to cause the current waveform distortion in the transient process or in steady-state oscillation in the case of the presence of the control system disturbances. This paper presents a control strategy using input shaping techniques and combining inductive voltage feedback, which can effectively inhibit distortion and vibration caused by LC links under the external interference or current command change. Input shaping technique can effectively suppress the vibration of small damping system, inductor voltage feedback control can suppress side current waveform distortion in the external interference. This paper combining the both advantages can effectively solve the current mode pulse width modulation rectifier side current oscillations and distortion. The performance of the proposed method is verified by simulation and experimental results, distortion of the line current is effectively reduced and the stability of the system is improved.