SM Velocity Control

This example shows how to control the rotor angular velocity in a synchronous machine (SM) based electrical-traction drive. A high-voltage battery feeds the SM through a controlled three-phase converter for the stator windings and a controlled four quadrant chopper for the rotor winding. An ideal torque source provides the load. The Control subsystem includes a multi-rate PI-based cascade control structure which has an outer angular-velocity-control loop and three inner current-control loops. The task scheduling in the Control subsystem is implemented as a Stateflow® state machine. The Visualization subsystem contains scopes that allow you to see the simulation results.

Model

Simulation Results from Simscape Logging

This plot shows the requested and measured speed for the test, as well as the phase currents in the electric drive.

Compare Simulation Results of Detailed and Equivalent Models

This plot shows and compares the results obtained simulating the detailed and equivalent models of the Four-Quadrant Chopper and Three-Phase Converter blocks.