What are asynchronous motor braking method of simple introduction

Asynchronous motor braking method have? Have their own characteristics? Which mode of braking speed relay used for? Asynchronous motor braking method generally has two kinds: mechanical braking and electrical braking. Mechanical braking the commonly used methods are: electromagnetic brake electromagnetic clutch and brake. Common braking method with energy consumption braking, reverse connect braking and regenerative braking. The advantage of reverse connect braking is: strong braking force, braking rapidly. Defect is: braking accuracy is poor, strong impact in the process of braking, transmission parts, easily damaged braking energy is used up big, unfavorable often brake. Therefore, reverse connect braking generally applies to large inertia braking requirements quickly, system, often do not start with the occasion of the brake. The advantage of braking energy is accurate, smooth braking, and less energy consumption. Defect is need additional dc power supply device, high cost of equipment, less braking force in small braking torque at low speed. So, brake braking energy is generally used for accurate and smooth. Regenerative braking is an economical method of braking. Don't need to change lines when you brake from electric running state automatically turn to dynamic braking state, converts mechanical energy into electrical energy and then feedback to the electrical grid, energy-saving effect is remarkable. The disadvantage is that application range is narrow, only when the motor speed is greater than the synchronous speed to achieve power brake.