Various aspects of home brew inverters

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Joined: 08/10/2011
Location: Australia
Posts: 2498
Posted: 08:46pm 13 Apr 2018      

You really get into the nitty gritty of it Poida, well done.

My observations of wobbles and spikes at 0 crossing are the wobbles are the result of incorrect value choke.

Sharp spikes that I experienced were from the MOSFET drive not being up to driving the number of MOSFETs I was using. Also a out of spec MOSFET could cause spikes. Since I started using Totem pole transistors to drive the MOSFETs and a different supplier of MOSFETs this problem has not come up again. I am waiting on some IR2010 driver chips to arrive to see if they make any difference compared to the IR2110s.

There are only 10 types of people in the world: those who understand binary, and those who don't.