A DC uninterruptible power supply is basically a battery bank and a charger. However, it differs from a simple battery…

Static inverters are used to convert DC voltage into AC voltage. The simplest forms of inverters produce an output waveform…

DC motors consist of one set of coils, called armature winding, inside another set of coils or a set of…

A number of auxiliary systems and related controls are provided throughout the hydroelectric plant to support the operation of the…

The turbine-generator unit and related equipment are protected against mechanical, electrical, hydraulic, and thermal damage that may occur as a…

A general hierarchy of control is illustrated in Table 5.1. Manual controls, normally installed adjacent to the device being controlled,…

The excitation system fulfills two main functions: 1. It produces DC voltage (and power) to force current to flow in…

The governor system is the key element of the unit speed and power control system. It consists of control and…

The generator circuit breaker and associated isolating disconnect switches are used to connect and disconnect the generator to and from…

The generator output is connected to terminal equipment via cable, bus bar, or isolated phase bus. The terminal equipment comprises…