Here is a simple method for estimating the actual load on an electric motor without special equipment. But first, a word of caution: Some applications (e.g., a large forced draft fan) require more ...

In troubleshooting situations involving a motor, more than half the battle is simply isolating the problem. Whenever there’s a working motor, there’s a load and there’s some sort of motor controller, ...

Recent studies indicate the level of knowledge and implementation of motor system energy-efficiency measures is low. A plethora of information on motor system design, best practices, purchasing, and ...

When absolute precision isn't an issue, engineers can select PWM control and back-EMF (BEMF) sensing for a dc motor's speed control. The motor must also be protected from overload. Typical solutions ...

In practice, under no-load conditions, the VFD DC link voltage is typically about √2 x mains voltage. The DC link voltage drops under load but in motor regenerative operation, such as during fast ...