GoldenMotor.com Forum
General Category => General Discussions => Topic started by: sdalli on March 18, 2008, 06:10:09 PM
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what is the output of the controller to the motor? does the controller controls the switching of the phases or does it simply supply the motor with a pulsewidth modulated dc and the phase switching is taken care inside the motor it self?
because it might not be that difficult to design a simple pwm controller (without speed limiting).
does any one have an oscilloscope handy and can do some testing?
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The motor does not run on a 2-wire PWM DC current, it is brushless. Switching of the 3 wiring phases is handled by the controller, not the motor. The hall sensors in the motor provide a position signal to the controller.
You might be able to duplicate the functionality with a custom built controller. Starting points for your custom design might include the OSMC project and a Light Electric Vehicle controller being built by FrankG (here: http://www.theworkshop.ca/energy/picox/4/picox4.htm). I believe both designs are for brushed motors, so you will need to make the jump to 3-phase brushless motors. A gentleman on the Endless Sphere forums has posted pictures of his own custom designed controller, which I believe is a brushless motor controller, but he has not posted schematics or source code. I don't think he ever will.
You may want to get this information confirmed, but I believe the motor is wired in wye configuration, and the hall sensors are spaced at 120 degrees of phase. Hopefully the info helps for your custom design.
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btw, what about warranty? does goldenmotor offer any warranty?
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which means?!
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"which means?!"
Good luck on getting warranty support. Consider yourself fortunate if sales@goldenmotor.com even acknowledges your e-mail reporting a problem.
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mmmmmmm, so lets hope for the best.