AC drives (Frequency Converters) improve efficiency of a mine's conveyor line
Conveyors are the workhorse of the mining industry and expected to operate efficiently, smoothly and flexibly. This requirement also applies to long-distance transportations in difficult environments.
The goal of higher productivity and reliability applies to conveyor systems in mining operations to a great extent. Key objectives include optimized mass flows, reduced energy costs and a well-coordinated workflow between conveying and transport processes.
Using an AC drive (frequency converter, vfd) for conveyor control permits an adaptation of the speed to changing needs. A partly loaded conveyor, with a higher speed than necessary, wastes energy and causes unnecessary wear. In controlling conveyors, AC drives (frequency inverters, adjustable speed drives) also improve process control by enabling collection of measurement and supervision information. The soft start of the conveyor using AC drives (VVVF Drives) reduces the stress on the gearboxes when the conveyor is started.
Below is the photo of closed loop vector control frequency inverter (variable speed drive), which is suitable.
Reliability and serviceability are key issues for a mine operating 24 h/7 d week. The controlled and balanced torque means less stress, wear, and therefore, less maintenance on the motor, gearbox and belts. The inverter units are partly configured in master/follower systems when controlling belts with several driving drums to ensure proper load sharing. "S" curve speed control during acceleration and deceleration also minimize belt dynamic interaction.
------------------------------------------------------------------------------------------------------------------------------
Powtran Technology Co., Ltd.(Shenzhen POWTRAN Technology Co., Ltd., DaLian Powtran Technology Co., Ltd.)
You will be interested in this: Powtran application of the conveyor belt with frequency inverters (variable speed drives).
