Issues with implementing vector control of an RL load

#1

Hi,

I’m Lucas Moraes, I’m an undergratuate student, and I’m just getting started working with PSIM. I’ve been tasked with applying vector control for an induction motor, though currently using a three-phase RL load as an intermediate step, and have successfully managed to simulate the plant and the control side of the system (as shown in the first schematic file), but I am struggling when introducing the DSP hardware into the system, the output current is completely different from what is expected. I’ve done so in the second schematic file. I also used a C block and the trip zone for current protection, all of which was tested separately on the DSP.

Best regards

TesteSimulacao2.psimsch (302.6 KB) TesteSimulacao.psimsch (121.4 KB)

#2

There are example circuits covering this in the examples folder of PSIM, you can search help for RL load. All of these example circuits do code gen with SVPWM for a 3 phase inverter.

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Also, here is a set of simulations and code gen files which will step you through the process with a detailed application note.