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TMDSSOLARUINVKIT: Gain calculation

Other Parts Discussed in Thread: SFRA

I wonder is the gain values to for example to CNTL_PI are calculated based on some hardware or simulation with bode plots?

	//CNTL PI Inverter Bus Voltage Regulation Loop
	Dmax_BusInv = _IQ24(0.80);
	Pgain_BusInv = _IQ24(1.0);
	Igain_BusInv = _IQ24(0.001);


  • The control loop implementation in the most of our latest reference designs are based on theoretical modelling (initially) followed by verification of the Bode plot using our SFRA (software frequency response analyzer). However, this design being one with a very slow voltage loop we may have tuned it by looking at the time domain response (transient response). But you can certainly use the SFRA here to verify the Bode plot.