MATLAB Examples

IPMSM Torque-Based Load Control

This example shows how to control the torque in an interior permanent magnet synchronous motor (IPMSM) based drive. A high-voltage battery feeds the IPMSM through a controlled three-phase inverter. A ramp of torque request is provided to the motor controller. The load torque is quadratically dependent on the rotor speed. The Control subsystem uses an open-loop approach to control the IPMSM torque and a closed-loop approach to control the current. At each sample instant, the torque request is converted to relevant current references. The current control is PI-based and uses a sample rate that is faster than the rate that is used for torque control. The task scheduling is designed in Stateflow®. The Scopes subsystem contains scopes that allow you to see the simulation results.

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Model

Simulation Results from Simscape Logging

The plot below shows the requested and measured torque for the test, as well as the rotor speed in the electric drive.