J
I am wondering about the interface of power factors with mechanical components. I understand the electrical side of power factors, i.e. what the electrical panel outputs. I know that it is advantageous to have a low power factor because more of the power is used (i.e. more of what is actually payed for is translated into actual energy).
But what sort of limits exist when the power gets to the mechanical components? If you have an AC induction motor, is there a particular minimum reactive power needed to run the motor? And if you do not supply this, will the motor shift the phase angle between the voltage and current to compensate?
For example, if you had a motor which you originally supplied a pf of 0.78 or something when you installed it, and you decided to install pf correction capacitors to change the pf to 0.99, do you actually get 0.99 of what you pay for (other than the capacitor inefficiency introduced)? or does the motor drain some of the real power to create necessary reactive power needed to run the motor?
But what sort of limits exist when the power gets to the mechanical components? If you have an AC induction motor, is there a particular minimum reactive power needed to run the motor? And if you do not supply this, will the motor shift the phase angle between the voltage and current to compensate?
For example, if you had a motor which you originally supplied a pf of 0.78 or something when you installed it, and you decided to install pf correction capacitors to change the pf to 0.99, do you actually get 0.99 of what you pay for (other than the capacitor inefficiency introduced)? or does the motor drain some of the real power to create necessary reactive power needed to run the motor?