Use Case: Induction Motor Control

Drive Control

In this use case, an induction motor controller is developed with the DS1104. The DS1104 is well-suited for drive control: while in this use case the slave DSP system calculates the PWM signals, the PowerPC calculates the controller model. With the experiment software ControlDesk, measuring and parameterization can be performed during run-time.

 

Determining Values

One of the board‘s incremental encoder interfaces picks up the encoder signal of the motor, while two A/D converters are required to analyze the motor currents. The controller board calculates the control algorithm on the basis of the measured values and determines the corresponding pulse width modulation (PWM). The three-phase PWM signals are generated on the board‘s DSP subsystem and determine the converter‘s output voltage and frequency.

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