Is there a fault with the Little Dolphin 24V brushed motor?
3 Answers
Little Dolphin 24V brushed motor has a fault. Controller damage: Because the controller (three-phase AC inverter) suddenly breaks down due to high heat, it also causes a short circuit between the components of the output three-phase power supply. When pushing, the motor is in a short-circuit power generation state (operating in the energy-consuming braking state), making it very difficult to push. Interturn short circuit: It is caused by a sudden interturn short circuit inside the motor. At this time, the pushing resistance will also be very large, and you can only find a vehicle to tow it to the repair point for motor repair. The brushless motor of the electric vehicle is a permanent magnet three-phase AC motor. When pushing, it will be in a power generation state. If there is a short circuit in the output, it cannot be pushed.
I noticed you were asking about potential defects in the Xiaohaitun 24V brushed motor. As someone who frequently works with various motors, I can share some insights. The main issue with brushed motors is the wear-prone carbon brush component, especially under high-frequency usage, which can lead to increased noise, reduced efficiency, or even complete stoppage. Some users of the Xiaohaitun model have reported similar problems, possibly due to minor flaws in materials or design. To prevent issues, it's advisable to avoid overloading, regularly clean the contact points, and periodically check resistance values. Voltage instability can exacerbate these problems, so maintaining a stable power supply is crucial. Overall, it offers good value for money but requires attentive maintenance.
I've used the Dolphin brand 24V brushed motor and found its daily performance acceptable, though it occasionally exhibits minor flaws like startup failures or sporadic sparking. This might relate to manufacturing processes - I suspect the internal copper brushes aren't durable enough, wearing thin over time and affecting contact. Testing in my home garage showed noticeable power reduction after six months. To extend its lifespan, I avoid prolonged continuous operation and apply lubricating oil periodically. While not critical flaws, routine maintenance helps prevent issues.
