Electrical Machines II: UNIT I: c. Synchronization and Parallel Operation of Alternators
Operation at Constant Excitation with Variable Load
Alternators
The radius of the circle is magnitude of induced e.m.f. E which remains same under variable load condition as the excitation provided to the alternator is maintained constant.
Operation at Constant Excitation with Variable Load
Let
us consider a case in which the excitation is kept constant while the load is
varied. With constant excitation, magnitude of induced e.m.f. remains constant.
The locus of extremity of E is a circle. The phasor diagram corresponding to
this condition is shown in the Fig. 3.8.1.
The
radius of the circle is magnitude of induced e.m.f. E which remains same under
variable load condition as the excitation provided to the alternator is maintained
constant.
Review Question
1. Explain the operation of an alternator at constant excitation
with variable load.
Electrical Machines II: UNIT I: c. Synchronization and Parallel Operation of Alternators : Tag: Engineering Electrical Machines - II : Alternators - Operation at Constant Excitation with Variable Load
Electrical Machines II: UNIT I: c. Synchronization and Parallel Operation of Alternators
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