One type of captive power generating units belong AC-powered devices,
it is a small independent power generation equipment, internal
combustion engine powered, driven synchronous AC motors'> generators
and produce electricity.
Generator set by the diesel engine, three-phase AC brushless synchronous motors'> generators, control box (screen), cooling water tank, couplings, fuel tank, muffler and public base and other components of the overall steel. Engine flywheel housing and motor '> Generator front cover of the axial positioning shoulder using a direct connection formed integrally, and the use of cylindrical elastic coupling flywheel direct drive motors' rotation> generator coupled manner by means of screws fixed together, so that the two join into a steel body, to ensure that the diesel engine crankshaft and the motor '> concentricity generator rotor in a predetermined range. To reduce the vibration of the unit, in the engine, the motor '> generators, water tanks and electrical control box, and other major components of the chassis connections, usually they are equipped with rubber vibration dampers or pad.
Generator set is composed of an internal combustion engine and synchronous motors'> generator combination, is limited by the maximum power of the engine parts mechanical and thermal loads, and therefore, the element of continuous operation maximum power required provisions, known as the rated power, AC Synchronous Motor '> generator rated power refers to the rated speed, long-term continuous operation, the rated output power, usually diesel engine rated power output synchronous AC motors'> between the output of the generator rated power, called Match ratio, matching the size ratio is affected by many factors, local atmospheric pressure, ambient temperature and relative humidity, the general requirements for the use of the unit in the plains, usually take matching ratio 1.6; higher matching ratio requirements crew should take 2 .