Drives Division
BIEÁN TAÀN
(VLT-DANFOSS DRIVES)
Nhöõng tính naêng cô baûn
Nguyen Van Thinh
Sales Manager
HP: 0937250579. Email: kythuattanhoa@vnn.vn
Email/Chat: bansibientan@yahoo.com.vn
Website: www.kythuattanhoa.com
CÔNG TY TNHH TM & DV KỸ THUẬT TÂN HOA
29, Đường 11, Phường 11 , Quận Gò Vấp, TP. HCM, VN.
Tel: 08.3.6020789. Fax: 08.62575557
Drives Division
What Does A VSD Do?
2
Bieán taàn ‟ VLT ñöôïc söû duïng ñeå khôûi ñoäng vaø ñieàu
khieån toác ñoä ñoäng cô caûm öùng xoay chieàu baèng caùch
thay ñoåi toác ñoä.
VSD Motor
Drives Division
Frequency Controls Motor Speed
3
n toác ñoä ñoäng cô rpm
P soá cöïc cuûa ñoäng cô
f taàn soá ñieän xoay chieàu AC
Thay ñoåi taàn soá laø thay ñoåi toác ñoä ñoäng cô.
Drives Division
The Basic Design of AC Drives
?
4
P x 9.55
n
T =
v
f
T = k
P = V * I *Cos O
N = 120 * f / p
VLT ñöôïc thieát keá ñeå ñieàu
khieån toác ñoä trong khi vaãn duy
trì Momen cuûa ñoäng cô (T)
baèng caùch thay ñoåi taàn soá vaø
ñieän aùp cuøng luùc.
Drives Division
CAÙC THAØNH PHAÀN CÔ BAÛN CUÛA VLT
1. Ñieän aùp nguoàn 3 pha.
2. Caàu chænh löu diode AC ra DC
3. Ñöôøng truyeàn DC
4. Cuoän caûm öùng DC
5. Tuï DC
6. Phaàn nghòch löu
„IGBT’s (Insulated Gate Bipolar
Transistor)
7. Ñoäng cô xoay chieàu 3 pha
8. Card ñieàu khieån 5
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