Generators
A diesel generator (DG), also called a diesel genset, combines a diesel engine and a generator (often an alternator) to produce electrical energy.This is a special case of motor generators. Diesel compression ignition engines are typically designed to run on diesel fuel, although some types are also suitable for other liquid fuels and natural gas.
Diesel generators are not only used in off-grid locations or as emergency power sources during grid failures, they are also used in more complex applications such as peak load reduction, grid support, and power grid feeding.
Diesel generator size is important to minimize off-peak loads and blackouts.
Dimensioning is complicated by the characteristics of modern electronics, especially non-linear loads.
In the 50 MW and larger size range, open-cycle gas turbines are more efficient at full load than other diesel engines and are much more compact at comparable capital costs.
However, for normal component loads, even at these power levels, diesel generators are often preferred over open-cycle gas turbines due to their superior efficiency.