The short circuit ratio (SCR) of ship synchronous generator is defined as the ratio of the field current required to generate rated voltage at open circuit to the field current req... Read more
The synchronous generator excitation system is designed to produce the rotor magnetic field that can be varied to control the voltage and reactive power of the ship generator.In mo... Read more
If the frequency of Generator 1 were to be maintained constant regardless of its load, if Generator 1 were made infinitely stiff, its frequency droop under load is eliminated, and... Read more
Is there a powerful but safe lithium-ion battery for the marine industry? And are there performance improvements for marine propulsion, diesel engine starting, or generator-off ene... Read more
The ac generator voltage is controlled by the field current and the speed, but the frequency is controlled only by the speed. Since the generator power ultimately comes from the pr... Read more
When the load torque rises, the automatic speed-regulating governor increases the fuel input to maintain the speed. However, it does not fully compensate for the load increase, and... Read more
If the generator load is suddenly increased in one step from P1 to P2, and the mechanical input from the prime mover is also changed fromP1 to P2 to match with the load, the genera... Read more
The maximum power limit Pmax at δ = 90° for the cylindrical rotoris called the steady-state stability limit. Any swing in δ beyond 90° may cause the rotor to lose synchronism and i... Read more
Large ac generators are made of solid magnetic steel rotors of cylindrical shape, whereas small- and medium-size generators are made with laminated salient poles (protruding poles)... Read more
As per Equation, increasing the field current If increases Ef . One can visualize that higher (longer) Ef in turn increases the terminal voltage VT or the power factor angle θ, inc... Read more
