CHƯƠNG 2 – MẠCH CHỈNH LƯU
Sơ đồ chỉnh lưu 1 pha
Sơ đồ chỉnh lưu 3 pha
Thiết kế bộ chỉnh lưu điốt công suất
SƠ ĐỒ CHỈNH LƯU MỘT PHA
Chỉnh lưu 1 pha nửa sóng
s
v: điện áp xoay chiều
L
v: điện áp tải
D
v: điện áp rơi trên điốt
Tải R thuần trở
Điốt
SƠ ĐỒ CHỈNH LƯU MỘT PHA
Chỉnh lưu 1 pha nửa sóng Tải cảmR, L
-Trong tải cảm có thành phần
L – kho tích trữ năng lượng
-Điện áp trung bình đầu ra
∫=
=
φ
ϕ
ϕϕ
π
0
sin
2
1dVU mave
SƠ ĐỒ CHỈNH LƯU MỘT PHA
Chỉnh lưu 1 pha nửa sóng Tải R thuần trở
Thyristor
s
v: điện áp xoay chiều
L
v: điện áp tải
: điện áp rơi trên T
T
v
G
i: dòng điện điều khiển
SƠ ĐỒ CHỈNH LƯU MỘT PHA
Chỉnh lưu 1 pha nửa sóng Tải cảmR, L
-Trong tải cảm có thành phần
L – kho tích trữ năng lượng
-Điện áp trung bình đầu ra
∫=
=
β
αϕ
ϕϕ
π
dVU mave sin
2
1
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