Auxiliary Drives and Factors Affecting their Selection

Consideration is given to the problems created not only in drives themselves but also in the electrical systems which serve them as main unit sizes and pressures increase, and as more oncethrough boilers and cyclone furnaces are used. To help in solving these problems, various auxiliary system layouts, different types and arrangements of motor drives and mechanical drives, such as auxiliary turbines or main turbine-generator shafts, are discussed and a method of evaluating component reliability is given.