Poidas "Inverter Software Control" Topic.


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Warpspeed
Guru

Joined: 09/08/2007
Location: Australia
Posts: 3267
Posted: 07:56am 05 Dec 2019      

Just received an e-mail from Klaus a few minutes ago.

He has fitted this experimental input current sensing feed forward system to his Warpverter and it works exactly as we had both hoped.
All it took was two extra components, a Hall sensor, and a 1K potentiometer.

With about 3Kw inverter load switched in, he can adjust the compensation potentiometer to have the exact same output voltage as at zero load.  Absolutely no voltage droop at all now, and no sign of any instability.

Feed forward voltage plus current compensation is definitely worth a try with a pwm Nano inverter. Any volunteers ?
Cheers, Tony.