ABOUT%20ME%20

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• ABOUT ME

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MOTOR CONTROLLERS

• What do they do?
• Terminology

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BASIC CLASSIFICATION

• Input DC, AC (1 phase, 3 phase)
• Outut DC, AC (1 phase, 3 phase)

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COMMON TRACTION MOTORS

• Low HP PM brushed DC, brushless DC
• High HP series wound DC, SepEx, 3ph induction AC

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RATINGS

• Voltage
• Battery pack voltage
• Charging voltage
• Current
• Peak rating (what time?)
• Continuous (1 hour) rating
• How much (what kind) of heat dissipation?
• Thermal protection?

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NON-REVERSING NON-REGENING CIRCUIT (1Q)
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NON-REVERSINGREGENING CIRCUIT (2Q)
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REVERSINGREGENING CIRCUIT (4Q)
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THREE PHASE INVERTER BRIDGE
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BUILDING BLOCKS
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DESIGN CONSIDERATIONS

• Power component choice (MOSFET, IGBT)
• Power module vs. paralleling
• Structural arrangement
• Enclosing (sealed or not)
• Power supply circuit (linear, switch-mode)
• Gate drivers (discrete, Integrated circuit)
• Current sensing (shunt, hall effect)

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DESIGN PROCESS

• Circuit schematic
• PC Boards layout
• Microcontroller code writing
• Mechanical design/drawings
• Prototypes built
• Performance testing
• Heat testing
• In-application testing

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DC vs. AC .
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DEMOS