I have converted a brushed motor, electric scooter to a brushless motor with suitable controller.
Every thing worked fine for months until I overloaded the motor one day. The motor suddenly lost its torque and proceeded to run very rough; little power and very jerky.
I assumed, at first that I had burnt out one set of thyristors and it was only running on two phases but investigation has shown that each phase conductor is passing current when the motor runs. I've tried measuring voltages at between the 5 Hall wires to the controller, these all vary to some degree but one seems to have no or much lower volts between it and the other 4.
Can anyone suggest the most likely problem? Whether the controller has a fault or, what I beginning to think now, that there might be a problem with the Hall sensors?
Can overloading a motor cause that type of fault?
Thanks.
Every thing worked fine for months until I overloaded the motor one day. The motor suddenly lost its torque and proceeded to run very rough; little power and very jerky.
I assumed, at first that I had burnt out one set of thyristors and it was only running on two phases but investigation has shown that each phase conductor is passing current when the motor runs. I've tried measuring voltages at between the 5 Hall wires to the controller, these all vary to some degree but one seems to have no or much lower volts between it and the other 4.
Can anyone suggest the most likely problem? Whether the controller has a fault or, what I beginning to think now, that there might be a problem with the Hall sensors?
Can overloading a motor cause that type of fault?
Thanks.