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#1
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2 Questions about electric motors
Hi,
1. I have a 36v motor that i need to control. I thought abouit using multiple 6v batteries, then stepping up the voltage. Would this damage the motor? 2. At what level is it best to run a motor at, in terms of % if stall was 100%? Thanks Michael |
#2
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2 Questions about electric motors
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"Michael" wrote in message k... Hi, 1. I have a 36v motor that i need to control. I thought abouit using multiple 6v batteries, then stepping up the voltage. Would this damage the motor? 2. At what level is it best to run a motor at, in terms of % if stall was 100%? Thanks Michael --- How you control the motor is somewhat dependent on how large it is and what you are using it for. You can get crude step control by using 3,4,5, or 6 batteries in series- for small motors. At lower voltages, the control will not be particularly effective as the available torque drops. A source of 36 to 40V with an electronic control will work well or, if the motor is small enough (and a 36V motor may well be too large) use of resistance control. I assume that this is a permanent magnet DC motor or you can separate the field from the armature circuit if a shunt motor. As for the level of operation - depending again on the motor, the best operating point is at a load well below stall -say under 30% of stall torque. It depends on the motor characteristics and type but for a PM DC motor or separately excited motor, the peak power output will be at about 50% of stall torque and current. -- Don Kelly @shawcross.ca remove the X to answer |
#3
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2 Questions about electric motors
I have a 36v motor that i need to control.
I thought abouit using multiple 6v batteries, then stepping up the voltage. Michael http://www.google.com/search?q=defin...dth+modulation http://groups.google.com/groups?q=in...dulation+motor |
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