Companies looking to reduce the carbon emissions at the same time than reducing the electricity bill of the plant should consider upgrading control regulations of inefficient processes. Typical sources of this inefficiency are:
- Variable speed Liquid Resistor Starters (LRS). In the past, variable speed LRS were used as the only economical alternative to variable speed control for large applications. With the current power electronics technology all this energy can be saved and recovered.
- Regulation of fans/blowers with dampers (i.e. kiln fans, etc). The energy loss caused by dampers compared to the operation of these fans/blowers at variable speed, provides an interesting opportunity of improvement.
Subsynchronous SER Drive offers a perfect opportunity for those applications using slip ring motors (WRIM) to upgrade their processes to state-of-the-art technology without replacing existing motors, saving an important amount of electricity that typically provides payback periods shorter than 1 year with very high return-of-investment (ROI). Detail calculations of process improvement are supported by ElectroDrives during the study phase.