How to select the drive power for the inverter

- Jul 24, 2019-

In the selection of inverter power, pay attention to these 4 points, choose the correct type of inverter, first in accordance with the type of production machinery, speed range, static speed accuracy, starting torque requirements, and then decide which control mode should be used for the inverter, the so-called appropriate is good to use and economical, to meet the process and production base conditions as a prerequisite, So what should be noted when choosing inverter power?

Inverter as the current field of electronic control. The main force, can be said to be a collection of thousands of favorites in one body. Peers familiar with the drive know that while providing panel operating mode, the drive also provides a long-distance, centralized control of auxiliary terminals (or external terminals) control. This form of control circuit operates through the wires of the auxiliary control terminals of the press-in drive, which is powerful and flexible and is the first choice for current inverter control.

Selection of inverter power

The system efficiency is equal to the product of the efficiency of the inverter and the efficiency of the motor, and the system efficiency is higher only if both are working under higher efficiency. From the point of view of efficiency, when selecting inverter power, we should pay attention to the following points:

1. The power value of the inverter is suitable when the power value of the motor is equivalent to the motor, so as to benefit the drive to operate at a high efficiency value.

When the power grade of the drive is not the same as that of the motor, the power of the drive should be as close as possible to the power of the motor, but it should be slightly greater than the power of the motor.

2. When the motor is frequently started, brake work or in heavy-duty starting and more frequent work, you can choose a large-scale inverter, in order to take advantage of the inverter long-term, safe operation.

3. After testing, the actual power of the motor does have surplus, you can consider the choice of power is less than the motor power of the inverter, but pay attention to whether the instantaneous peak current will cause overcurrent protection action.

4. When the drive and the motor power are not the same, the setting of the energy-saving procedure must be adjusted accordingly, in order to achieve a high energy-saving effect.

Inverter is the application of variable frequency technology and microelectronics technology, by changing the mode of power supply of motor operation to control the power control equipment of AC motor. The inverter is mainly composed of rectification (AC DC), filtering, inverter (DC ac), braking unit, drive unit, detection unit microprocessing unit, etc. The inverter relies on the internal IGBT open to adjust the voltage and frequency of the output power supply, according to the actual needs of the motor to provide the required power supply voltage, and thus achieve energy saving, speed control purposes, in addition, the inverter has many protection functions, such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, inverters have been used in a wide range of applications.

Variable frequency is the development of modern power electronic technology field, is our commonly used DC and AC between the transformation of the inverter by the internal IGBT to adjust the voltage and frequency of the output power supply, according to the actual needs of the motor to provide the required power supply voltage, and thus achieve energy saving, speed control purposes, in addition, The inverter also has many protection functions, such as overcurrent, overvoltage, overload protection and so on.

Since its establishment in 2008, Yueqing Winston Electric Co., Ltd. has grown to become an internationally renowned manufacturer of professional inverters after a decade of rapid and steady development. The company has the industry-leading independent core technology and sustainable research and development capabilities, to provide universal inverters, current vector inverters, magnetic flux vector inverters, fans dedicated inverters, special inverters for pumps, textile-specific inverters, air compressor inverters, injection molding machine special inverters and other high-quality products.

Because the inverter in many industries can achieve efficient energy conservation, improve the level of technology and other advantages, Winston inverter has been widely used in fans, pumps, air compressor, injection molding machine, winding machine, central air conditioning, textile, chemical, metallurgy, mining, pharmaceutical, ceramics, paper, oil fields, plastics, printing, thermal power, tobacco, Food and other types of machinery and equipment. Winston Electric has always adhered to the "quality to establish a brand, technology-leading occupation of the market" business policy, wholeheartedly for customers to create more valuable products and provide better service. Product.