replace a DC drive by an AC inverter
replace a DC drive by an AC inverter
(OP)
I need to replace a 57 KW DC motor and its drive by an AC motor with an AC frequency converter, Do I need to upsize the AC motor? How much.
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replace a DC drive by an AC inverter
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replace a DC drive by an AC inverterreplace a DC drive by an AC inverter(OP)
I need to replace a 57 KW DC motor and its drive by an AC motor with an AC frequency converter, Do I need to upsize the AC motor? How much.
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RE: replace a DC drive by an AC inverter
RE: replace a DC drive by an AC inverter
Many DC systems I have changed to AC had the DC motor running very slowly during operation so I had to change the gearing to keep the new AC motor in its preferred speed range.
If you need something more than a 5:1 speed range you may need to get a vector drive and vector duty motor. There is no set terminology for the capabilities of vector drives or vector motors so read the specifications.
As CJCPE said you have to know speed and torque. You cannot just go by horsepower.
Barry1961
RE: replace a DC drive by an AC inverter
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RE: replace a DC drive by an AC inverter
RE: replace a DC drive by an AC inverter
Many DC Applications that I get involved with, such as log shuttles or carriages, provide fast acceleration and deceleration in both directions.
Best regards,
Mark Empson
http://www.lmphotonics.com