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Brushless Dc Motor
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© 2012 - RENEWABLE ENERGY REVIEWS | Proudly powered by WordPress. 2010 Weaver by WPWeaver.info |
© 2012 - RENEWABLE ENERGY REVIEWS | Proudly powered by WordPress. 2010 Weaver by WPWeaver.info |
Yes. If the motor has no built-in commutator or control circuitry, the external circuitry can be designed to both control voltage and provide commutation. If the motor has an internal electronic commutator circuit, the voltage can probably be controlled externally over some range, but the external control circuitry must be designed to avoid interfering with the internal circuitry.
I don’t think so. I am not expert in this area but all the brushless DC motors we use are 3 phase. You have to turn the phases on in a specific sequence and you need motor position feedback from hall effect sensors to determine when you do that. Perhaps there are other kinds though.
Can I control the speed of a BRUSHLESS DC MOTOR using voltage control technique?
The voltage control technique is generally used for DC motors with brushes. Can I use the same technique for controlling the speed of a brushless dc motor?
ah, frictionless bearings and wear-never materials running enclosed in a vacuum minimizing friction and needing no fans to cool.
In reality, fudge on the above to achieve near-success
Links showing how a brushless dc motor works?
Any websites or links where I can find a picture, schematic or animation to show how a brushless dc motor works?
Will I be able to control the speed of a BRUSHLESS DC MOTOR using voltage control technique.?
The Voltage control technique is generally used for DC motors which have brushes for commutation. Can I use the same technique for controlling the speed of a Brushless DC motor?
Please do not answer from Wikipedia. I have seen that already.
when designing a brushless dc motor-what ways can efficiency be improved?
im possibly interested in building a brushless dc motor for a solar powered cart project, what things should be considered design-wise to achieve max efficiency and nice torque?
http://en.wikipedia.org/wiki/Brushless_DC_electric_motor
has a good write up but this link has a great animation that will make it all make sense to you,
http://electronics.howstuffworks.com/brushless-motor.htm
gudluk
is it possible to make simple brushless dc motor controllers?
given that my resources are micro-controllers and any relativity inexpensive discrete components or chips, is it possible to make a simple brushless DC motor controller for a flying model? (i’m an EE student, and i would really like a better solution than buying and hacking store-bought controllers)
Depends on motor to some extent, but yes. To start, you need schematic/spec sheet on motor to see how it is wound and is to be controlled, including feedback if any.
Then, just google. Try something like “pic microcontroller brushless dc motor”
PIC has several application notes on it, but lots of people do. App notes are your friend, read some of them. PIC has canned program already done, surely others do too. Nice way to control is with PWM, PIC offers several uP’s with hardware PWM capability. Here’s one to get you started.
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en012037