ABOUT ME ….

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Presentation transcript:

ABOUT ME …

MOTOR CONTROLLERS What do they do? Terminology

BASIC CLASSIFICATION Input: DC, AC (1 phase, 3 phase) Outut: DC, AC (1 phase, 3 phase)

COMMON TRACTION MOTORS Low HP: PM brushed DC, brushless DC High HP: series wound DC, SepEx, 3ph induction AC

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?

* *

NON-REVERSING NON-REGENING CIRCUIT (1Q)

NON-REVERSING REGENING CIRCUIT (2Q)

REVERSING REGENING CIRCUIT (4Q)

THREE PHASE INVERTER BRIDGE

BUILDING BLOCKS

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)

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

DC vs. AC ….

DEMOS…