Application of the Xindashida AS800 High-Voltage Variable Frequency Drive in Permanent-Magnet Direct-Drive Ball Mills in the Coal Mining Industry
2025-06-05
Application of the Xindashida AS800 High-Voltage Variable Frequency Drive in Permanent-Magnet Direct-Drive Ball Mills in the Coal Mining Industry
Project Background
Ball mills are widely used in industries such as nonferrous metal beneficiation, power generation, metallurgy, petroleum, petrochemicals, municipal water supply, cement production, and pipeline systems. Xinsida has many years of experience in the application of permanent-magnet direct-drive projects and can provide users with professional, comprehensive solutions. The diagram below shows the process flow chart for gold mining.
Customer needs
Currently, main transportation systems in coal mining enterprises predominantly rely on belt conveyors. The traditional supporting configuration involves asynchronous motors driving gear reducers. This setup is bulky, occupies considerable roadway space, and requires large quantities of high-priced gear oil for the reducers, leading to substantial maintenance demands and significant environmental pollution.
Xinshida Solution
Scheme advantages
1. Advantages of Permanent Magnet Synchronous Motors
Compared with asynchronous motors, permanent-magnet synchronous motors do not require reactive excitation current, resulting in a high power factor, a large torque-to-inertia ratio, reduced stator current and stator resistance losses, and measurable rotor parameters with excellent control performance.
It boasts advantages in enhancing efficiency, reducing losses, and improving controllability. When high-voltage variable-frequency drives are paired with permanent-magnet synchronous motors, these advantages are further amplified.
● Enhance efficiency:
Thanks to the presence of permanent magnets, the rotor of a permanent-magnet synchronous motor does not require excitation, thereby reducing the motor’s energy losses.
● High-precision control:
The rotor of a permanent-magnet synchronous motor rotates in synchronization with the magnetic field, resulting in highly stable operating speed that can be precisely controlled near the set value, making it ideal for applications requiring high-precision control.
● Low noise:
The rotor of the permanent-magnet synchronous motor features a double-layer winding structure, which reduces electromagnetic noise from the rotor. Meanwhile, its brushless design also minimizes mechanical noise.
● High power density:
Under the same volume, a permanent-magnet synchronous motor delivers greater output power than an induction motor, enabling the design of smaller and lighter motors.
2. Advantages of Xindashida’s High-Voltage Inverter AS800
● The use of SVC control and open-loop torque control perfectly solves the problem of large starting torque in ball mills.
● Improved efficiency, zero pollution, high power factor
● Advanced fault unit bypass operation
● High-performance control technology
● High reliability
● Strong self-diagnostic capability for faults
● All-Chinese human-machine control interface
● Advanced, timely, swift, and impeccable after-sales service
Scheme advantages
Associated products
AS800 High-Voltage Frequency Converter
Project Results
Xinshida has many years of experience in the application of permanent-magnet direct-drive projects and can provide users with professional, comprehensive solutions. In this particular case, Xinshida’s high-voltage variable frequency drive AS800 helped the user improve efficiency by eliminating intermediate components such as gear reducers. At the same time, it enhanced system stability, reduced subsequent maintenance costs, and thus enabled the enterprise to cut costs and boost efficiency.
The Xindashida high-voltage frequency converter AS800 boasts a wealth of achievements and extensive experience in the ball mill industry.
(1) Application of the Zhongyuan Dahua Ball Mill
(2) Application of Shandong Libo Ball Mill
(3) Application of Permanent Magnet Motors in Ball Mills at Fujian Dingxin Nickel Industry
(4) Application of Ball Mills in the Coal Mine of Chengde Jianlong Mining Company
