未來工作

1. 由於(2.26)式與(2.27)式是基於連續導通模式的電感電流推導而來，而未來也 能將非連續導通模式考慮進去，如圖5.1 所示，利用非連續導通模式之電感 電流，建立轉換器數學模型並推導出電感與電容之最小值，最後透過實驗驗 證其準確性。

𝐿_𝑚𝑖𝑛 ≅(𝑉_𝑖𝑛− 𝑉_𝑜𝑢𝑡) × 𝑉_𝑜𝑢𝑡

∆𝑖_𝐿× 𝑓_𝑠𝑤× 𝑉_𝑖𝑛 (2.26) 𝐶_𝑚𝑖𝑛= ∆𝑖_𝐿

8 × 𝑓_𝑠𝑤× 𝐶𝑉𝑅 × 𝑉_𝑜𝑢𝑡 (2.27)

I

使前端轉換器能直接將AC 電源轉換為 DC 電源，如圖 5.3 所示，使整體系

適合中低速運轉，而PAM 較適合高速運轉之無槽式馬達，如圖 5.5 所示，

因此亦可將本論文提出之無感測器驅動法使用在高速馬達上，並測試其性能 以及效率。

圖 5.4 有槽式馬達[11] 圖 5.5 無槽式馬達[11]

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