phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 3409
Posted: 08:36am 10 Apr 2026
Removing 1 primary turn will increase the turns ratio, increasing the maximum possible output voltage when the PWM drive reaches 99%.
It may however increase the idle current, depending on how much headroom there is between the magnetizing current and saturation.
The other option is to add extra turns to the secondary, 20 to 30 perhaps. This won't affect idle current but will increase resistance loss at high power a bit. There is no free lunch!