Two inverters, one open-winding machine
The configuration used a 5 hp, 60 Hz, 230/460 V induction motor. A main inverter with a fixed DC input connected to one end of the open winding; a secondary inverter with a floating DC capacitor connected to the other end.
Manage floating-capacitor energy
The main inverter supplying real power and the secondary inverter supplying reactive power. Without appropriate control, the floating capacitor could experience a damaging voltage rise.
Model energy balance and prototype control
MATLAB/Simulink modeling investigated an energy-balance control approach, followed by implementation in a PLECS prototype controller. A five-level line-to-line motor voltage and a constant-slip operating strategy intended to reduce motor losses.
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Connected expertise.
Hardware-in-the-loop test setup · supplied document
From offline simulation to real-time HIL.
Develop propulsion-system models in MATLAB/Simulink and bring machine and controller behavior into real-time testing.
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Inverter loss map · supplied document
Bring semiconductor losses into the drive model.
Extract device loss characteristics from datasheets and incorporate inverter losses into propulsion-system simulation.
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