What Should I Pay Attention To When Using 5t mine electric locomotives Electric Braking?
What Should I Pay Attention To When Using 5t mine electric locomotives Electric Braking?
The electric braking of the 5-ton battery Xiangtan electric locomotive should avoid braking at high speed as much as possible and the speed of changing the brake handle should not be too fast. When braking at a high speed, the braking current and braking force generated may exceed the range that the traction motor can bear, and at the same time, it will generate a high voltage. If the traction state is switched to the substation braking, in order to obtain enough choking braking force, it is necessary to maintain sufficient braking current and strong magnetic field. Therefore, the induced electromotive force generated by braking at high speed will greatly exceed the rated voltage of the traction motor.
Electric braking is a common braking method for battery-powered electric vehicles. Now, most of its control switches are integrated into the driver's controller. That is, when the speed control handle is turned to the zero position, the electric braking is automatically activated. Its working principle is to control the motor through the circuit.
Therefore, its advantages are simple and reliable, and no additional braking device is required. But its disadvantages are also obvious,
First of all, electric braking is only used as auxiliary braking mode, because when the motor speed decreases to a certain extent, the electric braking will lose its function.
Secondly, in order to avoid burning the motor, the speed of rotating the speed control handle should not be too fast, and should not be used at high speed as far as possible.
Finally, there is a special braking mode in electric braking - reverse braking. The operation is rapid reversing, so as to brake the electric locomotive. This is extremely easy to burn the motor, which is clearly prohibited in the operation regulations.
