Control Speed of BLDC Motor Without Position Sensor

Since R2024b

This example shows how to control the speed in a brushless direct current (BLDC) electric drive without a position sensor. A DC voltage source feeds the BLDC through a controlled three-phase inverter. The Control subsystem implements the sensorless speed control strategy. A hysteresis controller controls the phase currents. The Scopes subsystem contains scopes that allow you to see the simulation results.

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View Simulation Results from Simscape Logging

This plot shows the requested and estimated rotor speed and the measured and estimated current on phase A in the electric drive.