we are using 6ra70 siemens dc drive for our crane hoist application(300kw). While lowering the hoist from 40meter height it produces the regeneration power. Can any one explain how to calculate the amount of power produced.
Total work or energy is the force applied multiplied by the distance through which the force moves. So if I need to lift a load of 100 lbs. a distance of 100 ft, I must expend 10,000 ft-lbs of energy.
Power is the time rate of energy transfer. In the previous example, if I had 30 seconds to complete the task, I would need at least 20,000 ft-lbs/minute of power, or 0.606 hp, or 0.452 kw.
You will be able to do a similar calculation in metric units.
The energy and power released when the load is lowered are the same as that required to lift it the same distance at the same speed.
