1.Overview
As an important part of China's energy industry, the coal mining industry plays a pivotal role in the development of national economy. However, with the increasing development of society and the improvement of environmental awareness, the coal mining industry is facing a series of challenges, such as low production efficiency, high energy consumption and high safety risks. Especially in the operation of key equipment such as coal scraper and scraper, the traditional drive system has the pain points of difficulty in starting, low energy efficiency and high maintenance cost, which need to be solved urgently.
2.Implementation plans
The coal mining enterprise decided to introduce the Westinghouse electric transmission FD5000 series medium voltage drive as a new drive system. The frequency converter adopts the advanced magnetic chain closed-loop vector control algorithm, which can realize the accurate control of the motor and improve the starting torque and stability. At the same time, the three-level technology and the midpoint potential balance control technology are adopted to ensure the output waveform effect and power density, and adapt to the special working environment of the coal mine. In addition, the FD5000 medium voltage drive is also equipped with a perfect water speed cooling system, effectively improve the heat dissipation effect of the system, and ensure the long-term stable operation of the equipment.
FD5000 series medium voltage drive adopts the advanced vector control technology, which can accurately control the operating state of the high-pressure system, maximize the energy efficiency of the system, and reduce the energy consumption. Using the intelligent energy consumption management system, the FD5000 mv drive monitors the heating demand in real time and automatically adjusts the operating parameters of the system to meet the real-time demand in the best way, so as to reduce energy consumption and reduce operating costs. The stability and reliability of FD5000 mv drive ensure the long time stable operation of the high voltage system in extreme climate conditions, reduce the system failure rate, and improve the reliability of the system.
3.Application advantages
Start-up performance and reliability improvement
The large start torque function of the frequency converter solves the problem of large starting current and difficult to start with heavy load, which makes the start of the equipment more stable and reliable. This helps to reduce grid impact when equipment startup, extend the life of the equipment and improve production efficiency.
Enhanced operational stability
The introduction of magnetic chain closed-loop vector control algorithm and droop control function makes the operation of the scraper more stable and the speed more accurate. This helps to reduce the vibration and noise of the equipment during operation, and improve the stability and reliability of the equipment, thus reducing downtime and improving production efficiency.
Improved adaptability and flexibility
The three-level technology and the midpoint potential balance control technology can effectively adapt to the special working environment of the coal mine, including the large voltage fluctuation and frequent load changes. This enables the device to maintain stable operation under different working conditions, improving the adaptability and flexibility of the device.
Energy efficiency improvement and energy conservation
The precise control function of the frequency converter can adjust the running speed and power of the equipment according to the actual demand, so as to reduce the unnecessary energy consumption and realize the effective use of energy. This helps to reduce the energy consumption and operating costs of enterprises, and improve the economic efficiency of enterprises.