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Efficient Motor Control and Power Conversion System
Team MotorBoard
Critical Design Review24 February 2009
Nicholas Barr, Daniel Fargano, Kyle Simmons, Marshall Worth
Overview
Purpose and Specifications Provide a general purpose motor power
system and controllerMore specifically will be used in the IEEE
Future Energy Challenge ‘0930 N-m Cold Torque3000 Rpm 3-5 seconds1 KW PowerNEMA Frame 56
Motor Requirements
Torque Characteristics
System Description
System Diagram
Control System
Control Algorithm
Vector Controller
Clark Transform0 scsbsa iii
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Park Transform
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PWM
CrossWorksCode written for Development board using CrossWorks
Power System
Power System - Overview
Power System – Cascaded B/B
Power System - 3φ Inverter
Power System – Switches Power MOSFET
high-frequency operation low-voltage drop (low power
losses) saturation temperature
sensitivity IGBT
low drive current fast switching time higher voltage drop (higher
conduction losses) IGBT w/Diode Co-pack Voltage - Collector Emitter
Breakdown (Max): 600V Current - Collector (Ic) (Max):
85A
Power System – Driver
Configuration: High and Low Side, Independent
Bootstrap circuit designed to prevent gate voltage from dropping below minimum gate threshold voltage
Power System – Driver
DC-DC Bi-Directional Buck-Boost
Simulated 3 Phase Waveforms
Simulated 3 Phase Waveforms
Sensors
Parts List – Mass ProductionItem Part # Quantity Unit Price Total Price Mass
Production Cost
Caps 495-3502-ND 4 9.35 $37.4 $8.35
Inductors M8380-ND 1 9.56 $9.56 $1.39
IGBTs IRG4PSC71UDPBF
10 10.68 $106.80 $18.70
Drivers IR2113-2PBF-ND
5 5.57 $27.85 $5.96
Bootstraps XXX 5 1.19 $5.95 $1.49
MPU 568-1765-ND 1 11.20 $11.20 $2.80
Controls XXX 1 31.76 $31.76 $7.94
Motor Baldor 1 326.90 $326.90 $50
Package XXX 1 18.20 $18.20 $3.64
Total $574.54 $100.00
Division Of Labor
Project Milestones
Questions?
