Why disturb perfection ?
PWM (Pulse Width Modulated AC ) is an artificial waveform
Created by DC to AC conversion via the transistor inverter
Heat related issues both in drive and other equipment
Represent a variety of disturbance issues - including:
Common mode noise
Hidden failures, also on other equipment on the same grid
PWM is a complex technology, challenging installation, higher failure rate, will never be noise free
STADT LEAN PROPULSION® is based on perfect sinusoidal waveform
No noise - The STEALTH solution
No additional heat
Perfect source for AC motors
Simplicity, eased installation, reliability, efficiency
«In the past, we were not able to use frequency inverters at all. All PWM inverters interfered with the sensitive equipment on board, and they have therefor been banned from marine environments».
Manager Electric Systems, Kockums ThyssenKrupp Marine Systems