Active power[edit]
Active power delivered to the line is proportional to slip above the synchronous speed. Full rated power of the generator is reached at very small slip values (motor dependent, typically 3%). At synchronous speed of 1800 rpm, generator will produce no power. When the driving speed is increased to 1860 rpm (typical example), full output power is produced. If the prime mover is unable to produce enough power to fully drive the generator, speed will remain somewhere between 1800 and 1860 rpm range.
Required capacitance[edit]
A capacitor bank must supply reactive power to the motor when used in stand-alone mode. The reactive power supplied Maximum pass-through current[edit]
In practice and without taking this notion into account, many users unsuccessfully apply the principles to the actual deployment.
It's not in popular belief; that in almost every case, under the same active grid voltage, the power that the generator produces is greater than the power it consumes when it is at the motor,fully loaded state; its rated power. Sometimes the differences are in multiple folds. Higher the power means higher the amperage.
For prolong operation, and implied in its guaranteed, each motor has its “maximum pass-through current”. This amperage value; the current density; is derived from the maximum pass-through current property of the internal copper magnet wire and the combined configuration of their connections. Without opening up the unit to examine the internal setting of the copper wires, a division of the wattage of its rated power by its rated voltage can give users some senses of how much that value is.
Therefore, claims of making a unit generates more power than its rated should get a closer examination.
Grid and stand-alone connections[edit]