System-Level AC Drive

This example shows how to model a system-level AC drive for an electric machine by using the AC-DC Converter (Three-Phase) block and Motor & Drive (System Level) block. The AC-DC converter represents a grid-side converter which provides a constant DC-link voltage. The Motor & Drive block acts as a generic AC electric machine with its DC-AC converter. This modeling approach provides fast system-level simulation without the switching events of the power converters.

Model Overview

Simulation Results from Simscape Logging

The plot below shows the requested and measured motor speed, the requested and measured motor torque, and the active power that flows from the AC grid.

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 60 microseconds.