M
Hello,
suppose you have sinusoidal 3-phase analog servo amplifier that receives 3 (or 2) sinusoidal (phase current) commands from digital controller.
If these 3 current commands are sent directly to be scanned by PWM triangular wave for PWM pulses generation, it seems that DC bus voltage is essentially underutilized due to premature voltage saturation - about 15% of clean sinusoidal voltage is lost meaning torque-speed area cut, additional harmonic loss etc.
Has somebody thought over this phenomenon? Any remedies?
-Max
suppose you have sinusoidal 3-phase analog servo amplifier that receives 3 (or 2) sinusoidal (phase current) commands from digital controller.
If these 3 current commands are sent directly to be scanned by PWM triangular wave for PWM pulses generation, it seems that DC bus voltage is essentially underutilized due to premature voltage saturation - about 15% of clean sinusoidal voltage is lost meaning torque-speed area cut, additional harmonic loss etc.
Has somebody thought over this phenomenon? Any remedies?
-Max