Statement of work Design a direct torque control system for 3-phase induction motor Implement a...
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Transcript of Statement of work Design a direct torque control system for 3-phase induction motor Implement a...
Statement of workDesign a direct torque control system for 3-phase
induction motorImplement a variable speed drive systemObtain maximum torque control by estimating
speed and torque
Bader Abdulmane - 110045356
Team structure
Badar Abdulmane(Software Designer)
Dr Sam Ali(Project Supervisor)
Imran Ahmed(Team Leader)
Rajveer Singh Boparai(Hardware Designer)
Bader Abdulmane - 110045356
Project backgroundDC motors have the best performance but are very
expensiveAC motors are cheaper, require less maintenance and
have a longer life spanSystem have been developed to control speed of the
AC motorsVariable frequency drivesFlux vector drives
Bader Abdulmane - 110045356
Direct torque controlDirect torque control was invented by Manfred on
20th October 1984 Controls the torque therefore the speed of the motorNo speed or position sensor needed
[1] http://www.inverter-china.com/blog/upload/direct-torque-control.jpg
[1] DTC Block Diagram
Bader Abdulmane - 110045356
Cost Item Quantity Cost Total
Microcontroller 1 $50 $50Heavy duty IGBTs module 1 $30 $30Heavy duty Bridge Rectifier 1 $25 $25Voltage Sensor 1 $65 $65Current Sensors 2 $26 $52Keypad 1 $15 $15LCD (Display) 1 $35 $35
Total $272
Rajveer Singh - 110024063
Resources requiredTools Software Package Documents Consumable
Computers Microsoft Office Datasheets PCB making
Wire Cutters Matlab Thesis Components
Cables Eagle CadSoft Electronic Journals Internet Allowance
Soldering Iron Altium Articles Printer Quota
Multimeter MultiSim e-books Electricity (220V, 50Hz)
Oscilloscope Atmel Studio User Guides for Software Packages Fuel Expenses
Function Generator AVR Studio Mobile Phone Expenses
Pliers
Rajveer Singh - 110024063
Risk managementRisk management is a part of project managementProvides risk-free work environmentKey to success of the projectHelps achieving the target
Rajveer Singh - 110024063
Risk rating matrix(cont.)
Categorizes risk consequence and risk impact Risk level can be determined by (Likelihood *
Impact = Risk level)
Rajveer Singh - 110024063
Project schedule
Rajveer Singh - 110024063
Documentation
Project Plan
OH & SProgress Report
Final Report
Log Book
ResearchInduction Motors
DC MotorsDirect Torque Control
Hardware
PCB DesignSensor BoardControl Board
PCB Construction
Testing
PCB Testing
Component TestingSoftware Testing
System Testing
Programming
Direct Torque controlFrequency Control
Direct Torque Control (Advanced)
Webpage
Contingency
First SeminarSecond Seminar
DTC system block
Microcontroller
3-Phase Bridge Rectifier IGBT module 3~ Motor
Voltage Sensor
Current Sensors
3~ supply (138V/Phase)
3-phase bridge rectifierOne voltage sensorTwo current sensorsIGBT module (switching inverter)32-bit microcontroller
Imran Ahmed - 110052291
Figure: Direct torque control building blocks
Bridge rectifierHigh voltage rating (800V, 35A)Input rectifier for PWM invertersLow in cost ($25)
[1] Three phase bridge Rectifier
[1] http://australia.rs-online.com/web/p/bridge-rectifier/2278845Imran Ahmed - 110052291
Inverter (switching device)The IGBT module is ideal for three phase invertor
applicationLow cost ($30), usually inverter are very expensive Some important feature of this IGBT module
Smart shutdown function with a single pinBuilt in temperature sensor
[1] STGIPS20K60 (IGBT Module)
[1] http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00244265.pdf
Imran Ahmed - 110052291
MicrocontrollerATMEL AT32UC3C264C AVR microcontrollerHigh performance low power 32-bit microcontroller66MHz CrystalLess time to perform calculations due to high clock
frequencyHigh data transfer speed
[1] http://www.mscbp.hu/Documents/Atmel%2032bit%20AVR.pdf
[1] 32-bit Microcontroller
Imran Ahmed - 110052291
Current sensorExcellent accuracyVery good linearityMeasuring range up to 25A (rms)
[1] LA-25 NP Current Transducer
[1] http://www.datasheetcatalog.org/datasheet/lem/LA25-NP.pdfImran Ahmed - 110052291
Voltage sensorVoltage measuring range up to 500VVery good linearityLow response time
[1] http://pdf1.alldatasheet.com/datasheet-pdf/view/89619/LEM/LV25P.html
[1] LV-25 P Voltage Sensor
Imran Ahmed - 110052291
What’s next? Currently we are developing PCB designWill develop the software for DTCWill perform testing on the sensors and componentsThis will allow us to make changes in the software
according to the sensor’s outputFinally we will test the circuit by driving the motor
Imran Ahmed - 110052291