Covers various types of Electrical machines: The working principles, operation, and applications of the different types of Motors, Generators and Transformers.
As with most of electrical equipment, the key causes of failure of power transformers are either due to electrical failure…
The typical practice for testing power and distribution transformers is to carry out a comprehensive set of tests at the…
A key component of any motor control circuit is some kind of device to detect a condition of excessive overload…
Permanent magnet dc motors employ a permanent magnet instead of stationary field winding (as with the case of some other…
Testing is usually performed on DC machines to establish efficiency and power losses. A brake test is a direct technique…
Solid-state soft starting is the most commonly used technique for starting induction motors. It provides a smooth build-up of current…
A 3-phase autotransformer is typically employed where star or delta starting provides insufficient starting torque. Each phase of an autotransformer…
Classification of AC Motors The AC motors works by rotating the stator field, they make use of the natural alternating…
Let’s consider an illustration of a typical three-phase direct-on-line (DOL) starter below: Figure 1 Three-phase direct-on-line starter When the start…
The cycloconverter provides direct ac to ac transformation with control over both the output voltage magnitude and output frequency. It…
