永磁同步發電機之T-S模糊與分切合整電流控制性能評估

Performance Evaluation of T-S Fuzzy and Division-Summation Current Controls for Permanent-Magnet Synchronous Generator

王群翔(CHUN-HSIANG WANG)

指導教授 ： 張淵智

國立中正大學/工學院/電機工程學系/碩士(2016年)

摘要

本論文主旨在評估應用於永磁同步發電機驅動器之電流控制法的性能，本文會使用T-S模糊與分切合整(D-Σ)電流控制法，然後比較兩者性能。T-S模糊控制法可以解決非線性系統的問題，利用其解模糊化過程、平行分佈補償(PDC)設計、Lyapunov穩定度分析與Linear Matrix Inequality(LMI)數值分析求出增益值來完成控制器的設計。分切合整(D-Σ)電流控制法是將一個切換週期各區間的電感電流變化量先個別推導，最後再加總起來推導出控制法則，可以減少傳統abc轉dq的計算時間，且允許寬廣的電感值變化，可以解決電感值會受到電流大小影響的問題，並採用兩相調變(TPM)以減少切換損失。發電機輸出三相交流電經由換流器轉換成直流電供應到負載端，首先回授直流鏈端電壓與三相電流進控制晶片，再藉由上述兩種控制法來算出開關的責任週期比率，並以實驗評估兩種控制法的性能。

關鍵字

永磁同步發電機 ； T-S模糊 ； 分切合整 ； 電流控制

並列摘要

The main objective of this thesis is to evaluate the performance of the current controls for permanent-magnet synchronous generator (PMSG) by using T-S fuzzy and division-summation (D-Σ) current controls. The problem of the nonlinear system is solved by using T-S fuzzy models. The design of T-S fuzzy controller is accomplished via deffuzzification, parallel distribution compensation (PDC), Lyapunov stability analysis and Linear Matrix Inequality (LMI). In D-Σ current control, the current variations of each time interval in one switching period are derived respectively. Then the control algorithm is obtain via summing the current variations. The computation time of traditional abc/dq transformation is reduced and wide inductance variation is allowed. The switching losses are also reduced by implementing two-phase modulation (TPM). The three-phase output AC power is converted to DC load by the inverter. First, the DC-link voltage and three-phase currents are sensed and feedback to the control chip. Next, the duty ratios of power switches are determined via the above two current control methods. The performance of two control methods are evaluated by experimental results.

並列關鍵字

Permanent magnet synchronous generator ； T-S fuzzy ； Division-summation ； Current controls

參考文獻

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