
Right Programming Of Inverter In Fly Wheel Application
#1
Posted 15 January 2011 - 06:02 AM
We have a die cut machine where an old wound rooter variable speed motor (6-20HP) is installed which we want to replace with a simple AC motor 30KW, 4poles. The motor drives a flywheel (almost 500KG) and then a clutch engages the flywheel with machine. For variable speed operation, we want to control the speed of new motor via an inverter drive (Mitsubishi) but problem is that if, for example, motor is rotating at 1000Rpm and we slows down the speed, the flywheel (which is rotating at 100Rpm too) will be restricting to motor to slows down in desired time. For this problem, we are going to connect a Brake Resistor to achieve the quick deceleration.
Am I working in right direction? Any other suggestion/idea?
"Don't assume any thing, always check/ask and clear yourself".
#2
Posted 15 January 2011 - 05:33 PM
We have a die cut machine where an old wound rooter variable speed motor (6-20HP) is installed which we want to replace with a simple AC motor 30KW, 4poles. The motor drives a flywheel (almost 500KG) and then a clutch engages the flywheel with machine. For variable speed operation, we want to control the speed of new motor via an inverter drive (Mitsubishi) but problem is that if, for example, motor is rotating at 1000Rpm and we slows down the speed, the flywheel (which is rotating at 100Rpm too) will be restricting to motor to slows down in desired time. For this problem, we are going to connect a Brake Resistor to achieve the quick deceleration.
Am I working in right direction? Any other suggestion/idea?
Provide for pauses in the process engaging the clutch in the idle turns – without the material processed – to slow down the flywheel, so to say “naturally,” when going to a lower speed.
#3
Posted 15 January 2011 - 07:01 PM
We have a die cut machine where an old wound rooter variable speed motor (6-20HP) is installed which we want to replace with a simple AC motor 30KW, 4poles. The motor drives a flywheel (almost 500KG) and then a clutch engages the flywheel with machine. For variable speed operation, we want to control the speed of new motor via an inverter drive (Mitsubishi) but problem is that if, for example, motor is rotating at 1000Rpm and we slows down the speed, the flywheel (which is rotating at 100Rpm too) will be restricting to motor to slows down in desired time. For this problem, we are going to connect a Brake Resistor to achieve the quick deceleration.
Am I working in right direction? Any other suggestion/idea?
AB2005,
There is too much information/detail that you have not provided so it is impossible to answer your question. with any authority.
Sorry.
#4
Posted 16 January 2011 - 04:13 AM
This will work provided that the brake resistor is specified correctly, but you may also consider a regenerative VFD such as an active front end VFD as the brake energy will be returned to the supply and reduce your running costs.
Best regards,
Mark.
Mark Empson | administrator
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#5
Posted 16 January 2011 - 09:27 AM
#6
Posted 17 January 2011 - 04:17 AM
There is too much information/detail that you have not provided so it is impossible to answer your question. with any authority.
Sorry.
Dear jOmega;
What kind of more information you require to answer this question? Please list down I will try to answer.
Mark's idea is also good to use a active front end VFD.
"Don't assume any thing, always check/ask and clear yourself".
#7
Posted 26 May 2011 - 10:22 AM
Good Luck
Dear friends;
We have a die cut machine where an old wound rooter variable speed motor (6-20HP) is installed which we want to replace with a simple AC motor 30KW, 4poles. The motor drives a flywheel (almost 500KG) and then a clutch engages the flywheel with machine. For variable speed operation, we want to control the speed of new motor via an inverter drive (Mitsubishi) but problem is that if, for example, motor is rotating at 1000Rpm and we slows down the speed, the flywheel (which is rotating at 100Rpm too) will be restricting to motor to slows down in desired time. For this problem, we are going to connect a Brake Resistor to achieve the quick deceleration.
Am I working in right direction? Any other suggestion/idea?
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