1. Product name

PVD intelligent drive and control system for belt conveyor

2. Overview

The PVD intelligent drive and control system for belt conveyors is a package solution provided by Jingji Technology Co., Ltd. for the drive and intelligent control of bulk material transportation systems. PVD intelligent drive and control system consists of three core technologies: permanent magnet direct drive, frequency conversion and intelligent control. The main core components include permanent magnet variable frequency synchronous motors, frequency converters, and intelligent control devices. Peripheral auxiliary equipment includes water cooling device, backstop, coupling, disc brake and tensioning device.

The PVD intelligent drive and control system for belt conveyors takes the mechanical characteristics of the belt conveyor and the operating conditions of the transportation system as the research objectives, and comprehensively solves the problems of the system's power source, controllable operation, and intelligent control. Realize the safe, reliable and stable operation of the conveying system under complex working conditions.

Third, the scope of application

The PVD intelligent drive and control system for belt conveyors aims at bulk material transportation systems. It is widely used in mining, coal, ports, metallurgy, chemical industry, building materials, electric power, food and transportation and other fields.

4. Main technical features

1. The composition of PVD intelligent drive and control system

The generalized PVD intelligent drive and control system is mainly composed of permanent magnet variable frequency synchronous motor, PVD system special inverter, PVD system special cooling device, PVD system special control box, disc brake, tensioning device, Serpentine spring coupling、backstop, etc. The narrowly defined PVD intelligent drive and control system can only contain permanent magnet variable frequency synchronous motors, PVD system dedicated inverters, PVD system dedicated cooling devices, and PVD system dedicated control boxes.

PVD system configuration diagram

2. Characteristics of PVD system

1) High efficiency, high power factor

Without deceleration device, the mechanical efficiency is close to 100%. The power factors of permanent magnet variable frequency synchronous motors and frequency converters are higher than 0.96.

2) Efficient area

The PVD intelligent drive and control system for belt conveyors has high efficiency in the range of 20% to 120% of the rated load. Under low load and low speed conditions, it has more advantages compared with asynchronous motor drive systems.

 

“负载-效率”对比图                                 “负载-功率因素”对比图

3) More safe and reliable

l PVD intelligent drive and control system adopts permanent magnet direct drive technology, and the drive system has no intermediate transmission links. The system has few failure points, low vibration and low noise. More stable and reliable operation,

l The PVD intelligent drive and control system adopts frequency conversion soft start (brake) technology, which has little dynamic impact on the belt conveyor when starting (brake), improving the reliability of the belt conveyor and extending the service life of the conveyor.

4) Maintenance-free

The PVD intelligent drive and control system has no intermediate transmission links and few maintenance components, which fundamentally reduces operation and maintenance costs.

5) Intelligent control

l The system has the characteristics of zero-speed and full-torque output, realizing heavy load starting

l Possesses the function of low-speed belt inspection to realize frequency conversion and stepless speed regulation.

l Direct torque control and double closed loop (speed loop, current loop) adjustment are adopted to achieve multi-drive power balance

l Realize the "S" curve soft start and soft stop of the belt conveyor. The operation of belt conveyor is more controllable.

l Intelligent drive, which can adjust the running speed of the conveyor according to the load to achieve energy saving and environmental protection.

Jingji's PVD intelligent drive and control system, as an upgrade system of the permanent magnet variable frequency direct drive system, also has the advantages of pertinence, integration and system. Compared with other manufacturers, it has higher reliability, better system compatibility, better system performance, and more practical and reliable control logic and methods.