| Electronics > Beginners |
| Ironless linear motor - how to lower the voltage |
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| cmcraeslo:
Hello. I have ironless linear motor (magnets on the side and 3 coils that slide between the magnet tracks) that has 1/m/s at 30V with peak force of 200N. What I want to do is to make the same power and velocity at 12V. Let's assume that I have a driver and a 12V source that is capable of 100A. How would I size the coils? How many turns, what diameter, topology to use? Is there a calculator on the internet that would give me rough numbers to start with? |
| spec:
+ cmcraeslo I assume that you are talking about DC and not AC power. Also, can you post the maximum current that the LM consumes. The force is calculated by I * number of turns, where I is the current flowing through the coils. Rather than reduce the number of turns and use heaver gauge wire, which would be problematic, why not use a switch mode power supply to convert 12V to 30V. |
| cmcraeslo:
Yes, I'm talking about DC power. I don't want to add complexity and cost to the product. I also want the product to be as efficient as possible. I guess by lifting the voltage, I also add a lot of possible points of failure to it. Not to mention boosting the voltage with those amps... You mentioned this would be problematic? Why's that? |
| spec:
--- Quote from: cmcraeslo on November 15, 2018, 08:53:45 am ---Yes, I'm talking about DC power. --- End quote --- OK, thanks --- Quote from: cmcraeslo on November 15, 2018, 08:53:45 am ---I don't want to add complexity and cost to the product. I also want the product to be as efficient as possible. I guess by lifting the voltage, I also add a lot of possible points of failure to it. Not to mention boosting the voltage with those amps... --- End quote --- Fair points! Can you give a figure for the amps as requested. --- Quote from: cmcraeslo on November 15, 2018, 08:53:45 am ---You mentioned this would be problematic? Why's that? --- End quote --- I know very little about linear motors on the practical side, but in general winding motors, especially high power types, is a specialist business and is best done by a company with the expertise, especially as the motor seems to be high power |
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