DongCoDien (15).pdf

# Đổ i đ i ệ n áp ph ? n ứ ng nguyên lý đ

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đổ i đ i n áp ph n ng. Nguyên lý đ i u khi n Theo s ơ đồ thì độ ng c ơ Đ 1 bi ế n đổ i đ i n n ă ng xoay chi u c a l ướ i thành c ơ n ă ng trên tr c c a nó r i truy n sang tr c c a máy phát F, máy phát F bi ế n đổ i c ơ n ă ng đ ó thành đ i n n ă ng m t chi u để cung c p cho độ ng c ơ Đ , độ ng c ơ m t chi u chuy n thành c ơ n ă ng trên tr c làm quay máy s n xu t. Để đ i u khi n t c độ độ ng c ơ c n đ i u khi n đ i n áp đặ t trên hai đầ u độ ng c ơ , thông qua s c đ i n độ ng c a máy phát: E = k MF . Φ . ω MF . Khi máy phát F đượ c quay v i t c độ ω MF c đị nh, s c đ i n độ ng c a máy phát E MF ph thu c vào dòng kích t I kMF theo lu t đườ ng cong t hóa: E MF = k MF . ω MF . α .I kMF Xét ph ươ ng trình đặ c tính c ơ : ( ) M k R R I k k D D D MF kMF D D MF MF . 2 Φ + Φ = α ω ω F Đ MF Đ C MSX Đ
• Spring '16
• Stephanie Moore

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