Hi all,

I read about paper where in which we can implement , unipolar hysteresis current control of H-Bridge inverter(inverter with R-L load, load current sensed) by using two hysteresis bands, smaller band for one leg of inverter and larger band for other leg of inverter. This method works and i tested it matlab simulink.

However, when i tried the same concept for voltage mode control of H-Bridge inverter ( with H-Bridge with L-C filter, capacitor voltage is sensed). The dual hysteresis band method still gives bi-polar modulation instead of unipolar modulation.

Could some body explain or give any reference related to this issue.

Thanking you.