Synchronous Motor

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WATERBOY Participant Join Date: Sep 2006 Posts: 1	Synchronous Motor 09/25/2006 1:09 PM
	Is it possible to run a 4160v 3phase synchronous motor with brushless exciter, on a VFD instead of the usual across the line or auto-transformer starters?
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Anonymous Poster	#1 Re: Synchronous Motor 09/26/2006 8:04 AM
	Yes, but why on earth would you want to? We run two 6000 hp induction motors on a 4 kv VFD here every day 24/7. If you want variable speed the vfd will do that, if you want to change the speed, the vfd will do that. If you need precise speed control, the vfd will do that... Our VFDs are manufactured by Robicon. A web search will turn up their URL. They have proven reliable, and efficient.
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wangito Guru Join Date: Aug 2006 Location: Santiago Chile. Posts: 845 Good Answers: 7	#2 In reply to #1 Re: Synchronous Motor 09/27/2006 8:57 AM
	Hay, But this is exactly what he wants to do! Wangito __________________ Never trade luck for skill.
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#3 Re: Synchronous Motor 09/28/2006 10:05 PM
	People use synchronous motors as synchronous condensers, improving the power factor of a facility with a lot of inductive loads. Maybe he also wants to vary the speed. Robicon (now Siemens) has a lot of experience in applying VFDs to synchronous motors as well. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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Anonymous Poster	#4 Re: Synchronous Motor 10/15/2006 11:28 AM
	Not with the same brushless exciter. You would need to be synchronized from zero speed. To do this you would need a three phase excitation system and need to spend a lot more money for the proper equipment.
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Anonymous Poster (2); JRaef (1); wangito (1)

You might be interested in: DC Motor Drives, Brushless Motors, Motor Test Equipment

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