AC motors
AC motors
(OP)
Hello,
I am new to this forum and would like to post a question about industrial AC motors. I have been looking at the ABB range of motors & motor controllers recently to get some insight.
I'm designing a motorised railed tolley system for a greyhound racing stadium to drive the rabbit ahead of the dogs.
What are the advantages of using a low voltage (400V) AC motor system over an industrial DC motor? The operating speed of an AC inductance motor is based on the AC frequency and the number of poles, so how does the motor controller vary the running speed?
More importantly what happens when the motor is started?
I hope that you might be able to shed soem light on general direction and tips..
Thanks
sq
I am new to this forum and would like to post a question about industrial AC motors. I have been looking at the ABB range of motors & motor controllers recently to get some insight.
I'm designing a motorised railed tolley system for a greyhound racing stadium to drive the rabbit ahead of the dogs.
What are the advantages of using a low voltage (400V) AC motor system over an industrial DC motor? The operating speed of an AC inductance motor is based on the AC frequency and the number of poles, so how does the motor controller vary the running speed?
More importantly what happens when the motor is started?
I hope that you might be able to shed soem light on general direction and tips..
Thanks
sq
Mechanical Engineer
http://www.fastcomponents.co.uk





RE: AC motors
Machine Design has compiled all of our articles, Basics of Design Engineering and supplier information for AC motors, DC motors, Stepper motors, Servo motors and Gearmotors into a single site. The Electric Motors Reference Center can be found at www.electricmotors.machinedesign.com
Electric Motors Reference Center http://www.electricmotors.machinedesign.com/
> What are the advantages of using a low voltage (400V) AC > motor system over an industrial DC motor?
$$$$$$$$$ - A surprisingly sophisticated 3 HP VFD can be bought for less than $200
> The operating speed of an AC inductance motor is based
> on the AC frequency and the number of poles, so how does
> the motor controller vary the running speed?
VFD = Variable Frequency Drive
RE: AC motors
sq
Mechanical Engineer
http://www.fastcomponents.co.uk
RE: AC motors
Vector drives are more reliable and require less maintenance (probably zero). Also, DC motor drives are sunset technology that are invariably old designs that contimue to be sold and will have spares availability problems (in my humble opinion).