The retro fitting of inverter drives to motors incorporated into pumps, ventilation, extraction etc is another popular route to saving energy. Many systems (particularly older plant) incorporate motors which simply run ‘flat out’ all through the working day.
An inverter drive introduced into the system will drive the motor at only the required speed for the operation. For example reducing the speed of a motor by 15% can reduce its power consumption by 40%.
The cost of inverter drives has significantly reduced in recent years making this option a viable method of reducing energy consumption with reduced payback periods.