DC machines can be classified as self-excited, separately excited, permanent magnet (PM), and brushless. Self-excited machines can be further classified as shunt, series, and compound. Compound ...

The Energy Savings Calculator is an online tool that allows users to compare the electrical energy usage, costs and CO 2 production of a motor currently in operation with that of a new, highly ...

If you run your variable frequency drives at 60 Hz and below, you are not alone. Nearly all the VFDs in North America operate below this nominal frequency threshold. Yet a growing number of ...