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EXPERT SYSTEMS AND SOLUTIONS
Email: [email protected]
[email protected]
Cell: 9952749533www.researchprojects.info
PAIYANOOR, OMR, CHENNAI
Call For Research Projects Final
year students of B.E in EEE, ECE, EI,
M.E (Power Systems), M.E (Applied
Electronics), M.E (Power Electronics)
Ph.D Electrical and Electronics.
Students can assemble their hardware in our
Research labs. Experts will be guiding theprojects.
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SCADA FOR INDUSTRIAL DRIVES
UNDER THE GUIDENCE OF
Mr.T. Sree Ranga Raja M.E
(Teaching Research Associate)
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Computer
l
rm
Supervi
or
emote Termi
l U it
t
Stor
ge
3-
e
i e
C
i e
i ro
roce or
.C P .C
PLC
C
chi
e
3-Phase
achi
es
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PROJECT WORK PLAN
MINI PROJECT
100 Relay controller Real Time Scanner
Micro-procesor based
ADC
Parallel Port Decoder D.C drive control
characters
MAIN PROJECT
Micro-processor baseddrive control
Serial communication
using C
PSPICE simulation ofA.C machine
DAC and ADC in data
acquisition
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MICROPROCESSOR BASED FIRING UNIT+12V
+12V
+12V
+12V
+12V
+12V
+12V
-12V
+12V
+12V
-12V
-12V
-12V
230VAC
D1D2
D3 D4
C11000
25V
C2
+
-
+
-
R15
10K
R16
2.2KR17
2.2K
R18
10K
25V1000
IC3
7812
7912
IC32
1
3
1
2
3
D7
D8
R191K
R20
1K
R24
6.8K
R23
1K
C4116V
C31 16V
R22
1K
R21
6.8K
IC6
555
IC7555
R25
68
0.5W
R2768
0.5W
D12
D13
D9 D11
D14
R2810K
R2610K
G1
G2
X1
230V AC PRI
15V-0-15V SEC
500mA TRANSFORMER X2
X3
R1
250K
VR1
470K
VR2100K
R210K
0-5V
INP
T
R310K
R6
10K
IC1
a
IC1
c
IC1b
T12N2222
IC1
LM324
R7
47S1
R8
500
R9100K
D5
R1010K
R11
10K
1/21C2
LM747 R1310K
1/2 IC2
LM747
D6 R1418K
4-20 mA
INP
T
R410K
R12
10KCONTROLVOLTAGE
LM747
1/2 IC5
1/2 IC5LM747
10K
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HighPowerGatePulses
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PHASE CONTROLLER
CIRCUIT
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Observation 1
To turn a thyristor ON, a gate current >Igtmust be applied
until the load current isgreater than or equal to load current.
For industrial application this condition mustbe meet at the
lowest expected operatingtemperature
Use an resistor o f 1K of lower value between gate and
cathode
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Observation 2
To turn off a thyristor the load current must
be
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Observation 3
In most of the industrial there is a very high electrical
noise these noises may result in false triggerring of
triacs
Make gate connections as small as possible
The gate sensitivity can be reduced by adding 1 K
ohms between the gate and and MT1.-
use shielded cable
H triac can also be used ( e.g BT 139 -600H)
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Observation 4
When the drives are used in industrial
application with highly capacitive loads it
high dv com/dt or dv / dt are likely to causeproblems in these
cases it is better to use an
RC snubber across MT1 and MT2 .
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Observation 5
A very high di com / dt is observed when the
drive unit is intended to feed a transformer or
an auto-transformer load , starting ofinduction machines .
Use an inductor of few mill henry in series
with the load
Industries may employ HI-COM triacs
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REFERENCES
A Distribution System Automation Laboratory For
undergraduate
Education IEEE Transaction on Power Systems Department of
Electrical Engineering ,National Taiwan university
Distribution Management System : Function and Payback IEEE
Transaction on power Systems
Concise notes On SCADA Systems ofChennaiCityControlCenter
TNEB invited talks CIRE
High frequency DC:DCpower conversion: Theinfluenceof
package parasitics
-by Mark Pavier, Andrew Sawle, ArthurWoodworth,
Ralph Monteiro, Jason Chiu, Carl Blake
CDV/DTInduced Turn-On In Synchronous BuckRegulators
-by ThomasWu International Rectifier
Dallus Semi Conductors - Application Note 206 - Using a PCs
RS232 Serial Port To Communicate with 2-Wire Devices
