Asynchronous motorThe braking mode can be divided into mechanical braking and electrical braking. Mechanical braking is the method of using mechanical devices to make the motor stop quickly after cutting off the power supply.Three-phase asynchronous motormanufacturerIt is said that there are two kinds of devices that are widely used: electromagnetic holding brake and electromagnetic clutch.
The commonly used braking methods are energy consumption braking, reverse braking and feedback braking.Asynchronous motorThe advantage of reverse braking is that the braking ability is strong, but the braking is rapid, but the accuracy is relatively poor, the impact is relatively strong during the braking process, and it is easy to damage the transmission parts-The amount of consumption is also relatively large, so it is not suitable for frequent braking; Therefore, this method is more suitable for rapid braking requirements, large system inertia, and do not often start and brake occasions.
The advantages of energy consumption braking are accurate, stable and relatively small energy consumption, but the additional DC power supply device is needed, and the equipment cost is relatively high, the braking force is relatively weak, especially at low speed, the braking torque is very small; Therefore, this braking method is generally more suitable for applications that require accurate and stable braking.
Three-phase asynchronous motor manufacturersIt is said that feedback braking is a more economical braking method, which does not need to change the line when braking, so that the asynchronous motor can automatically switch to the power generation braking state, and can also convert mechanical energy into electrical energy, and then return to the grid, the effect of energy saving is more obvious. However, its disadvantage is that the scope of application is relatively narrow, and it can only be realized when the synchronous speed is greater than that of the synchronous speed.
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