TRUING DAI HOC Slf PHAM KY THUAT
THANH PHO HO CHI MINH
K H O A C O K H I M A Y
B 0 M O N C O N G N G H E C H E T A O M A Y
DE THI CUOI KYHK1- NAM HOC 2019-2020
Mon: TRANG BI DDT TRONG MCN
Ma mon hoc: EEEI321925
De so/Ma de: 02/19 - De thi co 02 trang
Thai gian: 60 phut
K H O N G duoc phep sir dung td i lieu
Cau 1: (2.5 diem)
Clio so do mach ham dong co' khong dong bo ba pha bang dien co nlnr hinh ben duoi:
a) Hay xem xet so do dien da cho co hoan chinh khong? Neu khong hay hoan chinh
lai so do mach dien (si'ra doi, them cac khi cu dien phii hop va ve so do mach nidi
veto giciy thi) (1,75 diem).
b) Trinh bay nguyen ly hoat dong cua mach dien tren theo mach dien da ve si’ra lai
Cau 2: (4,0 diem)
He thong dien khien may gom 02 dong co khong dong bo ba pha M l, M2 (380V/50Hz).
Dong co M i khoi dong true tiep, dong co M
2
dirge khoi dong gian tiep bang phuong phap
doi noi sao - tarn giac. Hay thiet ke mach dong luc va mach dieu khien theo yeu cau sau:
+ Nhan nut START, ca hai dong co M i va M
2
bat dau boat dong;
+ Thoi gian de dong co M
2
chuyen tir noi sao sang tarn giac la 6s;
+ Nhan nut STOP de dung hoat dong cac dong co theo chu trinh sau: dong co Mi
dung hoat dong truoc, sau thoi gian 30s dong co M
2
dung boat dong.
+ Cac khi cu dien khac tu chon.
Can 3: (3.5 diem)
• Lap trinh PLC (ngon ngu LD) de dieu khien hai dong co' khong dong bo ba pha
(380V/50Hz) theo cac yen cau nlur 6 cau 2. Hay thuc hien cac noi dung sau:
+ Thi6t k6 (ve) mach dong luc cho cac dong co tren; (0.75 diem)
+ Lap bang cap phat dja chi (Symbol Table) (0.25 diem);
+ So do dau noi PLC (0,5 diem);
+ Viet chuong trinh dieu khien dang LD (2,0 diem)).
So hieu: BM l/QT-PDBCL-RDTV Trang: 1/2
