- 學位論文
具前饋控制與死區的比例積分微分控制器之脈波寬度調變換流器設計
Design of Proportional Integral Derivative Controller with Feedforward Control and Dead Zone for PWM Inverters
摘要
傳統比例積分微分控制器，因為架構簡單、設計容易已被廣泛使用於脈波寬度調變換流器。然而，傳統比例積分微分控制器對於參數的變動與負載干擾是敏感的，一旦換流器的負載為高度非線性時，將使換流器輸出有高總諧波失真與慢動態響應。因此，本論文提出具前饋控制與死區比例積分微分控制器，使用死區比例積分微分控制器，換流器可以在大的參數變動或高度非線性負載狀況下變得不敏感，而前饋控制進一步增強了追蹤控制的精確性，使得換流器輸出有低總諧波失真與快的動態響應。為了驗證所提出控制器的有效性，MATLAB軟體模擬結果顯示，所提出之換流器可以在非線性負載下得到低總諧波失真與快的動態響應。
並列摘要
Traditional proportional-integral-derivative (PID) controllers have been broadly applied to pulse-width modulation (PWM) inverters due to their simple structures and easy designs. However, traditional PID controllers are sensitive to parameter changes and load interferences. This fact may result in high total harmonic distortion (THD) and slow dynamic response in cases with an inverter of highly non-linear load. Thus, this thesis proposes a (PID) controllers with feedforward control and dead zone. With the dead zone PID controller, the sensitivity to large parameter changes and highly non-linear load can be reduced. And the feedforward control can enhance dynamic response, that in cases with an inverter of highly non-linear load, there can be low THD and fast dynamic response. To verify the effectiveness of the proposed controller, this thesis used the software MATLAB to run simulations. And the results showed that the proposed inverter can achieve low THD and fast dynamic response in cases with non-linear load.