Why my Ebike controller always broke

Electric Motors and Controllers
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jaypeecastillo@ymail.com   1 µW

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Joined: May 26 2018 11:07pm

Why my Ebike controller always broke

Post by jaypeecastillo@ymail.com » May 26 2018 11:17pm

Hi im new to this group can i ask what is the reason why my controller always broken after a couple of minute using it? I put fuse its always broken also after that if i connect the my controller it will creat a big spark thats the time i know that my controller broke again.

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Chalo   100 GW

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Re: Why my Ebike controller always broke

Post by Chalo » May 27 2018 1:25am

What controller, what motor, what battery? Are you connecting the controller to the load before connecting the battery, as recommended?
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thorlancaster328   10 mW

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Re: Why my Ebike controller always broke

Post by thorlancaster328 » May 27 2018 10:25am

Does your eBike controller have overheating protection? Repeated failure after 5 minutes of riding probably indicates a thermal problem.
Another possible reason could be a shorted phase winding. Take an ohm meter and measure between each pair of wires. If they differ by more than about 15%, you probably have a short in the motor.

Also, what battery, controller, and motor are you using? Without that information, diagnosing the failure will be impossible.
When in doubt, get bigger MOSFETs!

jaypeecastillo@ymail.com   1 µW

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Joined: May 26 2018 11:07pm

Re: Why my Ebike controller always broke

Post by jaypeecastillo@ymail.com » May 27 2018 4:13pm

Im using a motor 350-500w max and my battery is 48v 20ah and my controller that i use 48v 1500w.i convert the ecoped and trasfer to kick scooter .Thank you so much for your response.

thorlancaster328   10 mW

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Re: Why my Ebike controller always broke

Post by thorlancaster328 » May 27 2018 7:00pm

Some controllers are overrated, but any 1500W controller should stand up just fine to the task of driving an undamaged 350 watt motor.

I would recommend that you do an ohm meter test on your motor. If you do not already have one, go to the hardware store and buy a digital multimeter. I suspect that your motor is bad and is blowing controllers.

If you do not feel like getting an ohmmeter, I suggest that you open up the motor and take a look inside. If the windings are black, charred, or barbecued, your motor is toast and you need a new one.
When in doubt, get bigger MOSFETs!

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