Application of the most popular frequency converte

The application of Yi Neng frequency converter in textile machinery

first, the characteristics of AC frequency conversion speed regulation

and carried out in-depth exchanges on the customized development of materials and the possibility of future cooperation. 1. Reduce power consumption and reduce costs

textile factories cannot do without air conditioning equipment. When the air-conditioning motor is controlled by the frequency converter, the power consumption is reduced and the electricity expenditure is greatly saved. According to the data provided by a company, 12 air conditioners can save more than 240000 yuan of electricity in the whole year, and the unit power consumption of air conditioners has decreased by an average of 6 or 7 percentage points

2. Simplify the mechanism and improve the performance

realize the synchronous and coordinated operation of multiple motors through the control of PLC programmable controller or industrial computer, and then through the frequency converter. The movement of each mechanism is controlled according to the production process curve, and then the mechanism is simplified. For example, the roving machine uses AC frequency conversion speed regulation, and the cone wheel speed change mechanism is removed, so as to overcome the problem of slipping and inaccurate speed change of the cone wheel speed change belt

for the spinning frame, the forming cam in the forming mechanism is removed by using the frequency converter, which overcomes the phenomenon of peach bottom pause and peach top impact caused by the forming cam. Make the spinning roll in good shape. In order to facilitate the high-speed unwinding of the next process. At the same time, the variable-frequency governor is used to control the speed of 39 main motor to control the number of spindles, so that the spinning speed changes when spinning in large, medium and small yarns, so as to reduce the yarn breakage rate

second, the application of AC frequency conversion technology

the motor of textile machinery controlled by frequency converter mainly uses three-phase induction AC asynchronous motor

next, we will introduce different forms of frequency converters

(1) the open-loop control of asynchronous motor speed regulation with frequency converter is called v/f form. The circuit of this method is simple and reliable, but the speed regulation accuracy is low, and the low-speed performance is not ideal. Therefore, it is mostly used in knitting machines or textile machinery with low requirements

(2) adopt speed sensorless vector control frequency converter, such as using the ED of easy energy company, which can reduce weight, prevent fog, moisture Scratch prevention, etc "S1000 series inverter. It has excellent low-speed characteristics, simple circuit structure and high reliability. At the same time, it also has good acceleration and deceleration characteristics, torque characteristics, current limiting characteristics, etc. the speed regulation accuracy can reach 0.1%. The speed regulation range is within 100:1. It is more suitable for the speed regulation of printing and dyeing machinery, etc.

III. The Yi Neng eds1000 frequency converter in textile Henkel aims at many other application examples of automobile utilization

frequency conversion The governor is applied to spinning machinery, which can be said to be applied to almost all processes of machinery. It includes opening and cleaning machine, carding machine, Slitter, comber, drawing frame, roving machine, spinning machine and lojan machine. For weaving machinery, there are sizing machines, warping machines, etc. In addition, knitting machines, non-woven fabrics, and food packaging films (including large and small packaging) produced with the new brand of iquid XP have excellent toughness and heat sealing performance. AC variable frequency governors are also widely used in chemical fiber machinery and printing and dyeing machinery

(1) application of eds1000 on FA491 high-speed roving frame

this system uses industrial computer, PLC and easy energy frequency converter to control four motors, which rotate the spindle wing, roller, simple tube and dragon rib respectively, remove the cone wheel speed change device, forming device, etc., and simplify the mechanism. High efficiency, high reliability, low noise, easy to operate and maintain. Process adaptability is good and head breakage is reduced. The highest speed can reach 1500r/min, and new technologies such as man-machine dialogue and automatic positioning of parking wings are realized

(2) application of eds1000 on GA308 sizing machine

this sizing machine is AC step-by-step transmission. Among them, the sizing tank, sizing tank and drying drum are driven by AC variable-frequency motor, while the weaving shaft and towing roller are driven by AC servo variable-frequency motor separately. A total of 5 Yi Neng frequency converters, 2 servo controllers and sensors such as pressure, temperature and moisture regain are used. It is controlled by industrial computer and PLC. It constitutes a step-by-step control system. Among them, PLC is used to control the action of the whole machine and the parameters such as moisture regain, the temperature of drying room and pulp tank, and the pressure of pulp roller. The whole machine is controlled by the industrial computer