CAJ | 학술논문

文中就三电平变换器中点电位不平衡作了详细的分析，从大、中、小三种矢量工作基理上分析了空间矢量调制对中点电位的影响；论文提出实现电压平衡的模糊控制器，通过模糊控制器自动改变控制因子的大小，改变流向中点的电流方向及大小，以保证直流侧两电容电压的平衡。这种方法不需要额外的硬件开销，用软件就能实现。最后文中在实验样机上实验，三相三电平电压型PWM整流器实现了高功率因数，结果验证了基于模糊控制方法可实现三电平PWM整流器电容中点的平衡。
문중취삼전평변환기중점전위불평형작료상세적분석，종대、중、소삼충시량공작기리상분석료공간시량조제대중점전위적영향；논문제출실현전압평형적모호공제기，통과모호공제기자동개변공제인자적대소，개변류향중점적전류방향급대소，이보증직류측량전용전압적평형。저충방법불수요액외적경건개소，용연건취능실현。최후문중재실험양궤상실험，삼상삼전평전압형PWM정류기실현료고공솔인수，결과험증료기우모호공제방법가실현삼전평PWM정류기전용중점적평형。
The fact of neutral point (NP) voltage unbalance is analyzed in detail and a Fuzzy Controller based on control factor is proposed in this paper, which will balance the NP voltage simply and not need any extra hardware cost. In order to implement neural balance for DC capacitors, a fuzzy controller has been presented based on control factor. The neural voltage can be balanced automatically by the fuzzy controller with the help of control index. The Fuzzy controller design has been discussed deeply and the experimental results verify that the proposed technique is correct and the balance of the NP voltage guarantees high power factor of TL-PWM rectifier.