Single-Phase Asynchronous Machine Direct Torque Control
This example shows how to control the rotor speed in a single-phase asynchronous machine (ASM) based electrical drive using direct torque control. An ideal torque source provides the load. The Control subsystem uses a cascade control structure. An outer PI-based speed control loop provides the torque and flux references to the direct torque control algorithm from the inner loop. The single-phase ASM is fed by an H bridge. The Scopes subsystem contains scopes that allow you to see the simulation results.
Simulation Results from Simscape Logging
The plot below shows the requested and measured speed for the test, as well as the stator currents in the electric drive.
The plot below shows the requested and measured torque for the test, as well as the requested and estimated flux in the electric drive.
Results from Real-Time Simulation
This example has been tested on a Speedgoat Performance real–time target machine with an Intel® 3.5 GHz i7 multi–core CPU. This model can run in real time with a step size of 20 microseconds.