PSG_info

Brushless Alternator B rushless alternator is a machine that convert mechanical energy into elecrical energy, basically alternator couple with primover, when primover rotate an alternator induce voltage . Diesel generator There are six part of brushless alternator 1. Main armature 2. Main Field 3. Exciter armature 4. Exciter field 5. Rectifier assembly 6. AVR - automatic voltage regulator It look like one unit but there was two parts, Main alternator and another part was Exciter. Internal winding of alternator   AVR  automatic voltage regulator is a electronic device for automatically maintaining  generator  output terminal voltage at a set value under varying load and operating temperature. It controls output by sensing the voltage V out  at a power-generating coil and comparing it to a stable reference.  Rectifier is a electrical device which convert alternating current into direct current.   AVR...

Inverter duty VS Normal asynchronous motor   The basic difference in inverter duty and normal asyncronous motor is the cooling area and insulation class. In inverter duty motors the cooling area of the core is increased and in addition to that a separately powered cooling fan is placed instead of ingral cooling fan due to reduce the high heat generation during low speed. The winding insulation is incresed (aprox. 2 times) to atempt the high heat generation of the motor during low speed operation. Efficiency of the motor is higher than the normal induction motor as the cooling effect has been increased. We cant use normal induction motor in the invertar duty as the cooling effect will be lower in low speed operations and in normal speed harmonics effect to the motor temp. rise may resulted to failure of the motor. slightly higher costing effect for the purchase of inverter duty motors. https://amzn.to/2HYkQdx https://amzn.to/2JhZWr7 htt...