The frequency conversion speed regulation function of the inverter (hereinafter referred to as -VFD) is to convert the three-phase power frequency (50Hz) AC power supply (or any power supply) into a three-phase AC power supply with adjustable voltage and frequency. Frequency conversion speed control device can also be sometimes called VVVF, which is mainly used to adjust AC motors (asynchronous or synchronous machines).

Do you know how to set the motor characteristics of the inverter-controlled mechanical equipment? Next, Sanke Inverter will introduce this aspect for you through the following content. 1. Parameters to be set for the motor When the inverter (hereinafter referred to as the -VFD) is in the "vector control" (F0-03=1) mode ...

As we all know, coal enterprises are large consumers of electricity, and their electricity consumption costs account for a considerable proportion of their production costs. In coal mining enterprises, due to the fact that the production equipment generally meets the characteristics of long service life, the phenomenon of large horse-drawn trolleys caused by large model selection, serious waste of electric energy, and the operation efficiency of equipment is often ...

The source of AC converter interference comes from interference from the external power grid. Harmonic interference in the power grid mainly interferes with the frequency converter through the power supply of the frequency converter. There are a large number of harmonic sources in the power grid, such as various rectifier equipment, AC and DC interchange equipment, electronic voltage adjustment equipment, nonlinear loads and lighting equipment.

Fuji Electric has set forth its management philosophy of "Contributing to a Rich Society, Challenging the Limits of Creativity, and Developing in Harmony with the Natural Environment," and one of the pillars of its management policy is to contribute to the sustainable development of society through energy and environmental businesses. This article will focus on the energy sector ...

In order to meet the market demand for miniaturization and high reliability of IGBT modules, Fuji Electric has developed RC-IGBTs (Reverse-Conducting IGBTs), which combine IGBTs and FWDs as single chips. The combination of the 7th generation "X series" chip technology and packaging technology with RC-IGBT technology makes the 7th generation ...

【Question】What is the influence of carrier frequency on inverter and motor? 【Answer】1. The influence of carrier frequency on the output current of the inverter (1) The higher the operating frequency, the larger the duty cycle of the voltage wave, and the smaller the higher harmonic component of the current, that is, the higher the carrier frequency, and the flatness of the current waveform.

With the rapid development of China's industrial production, the application range of electrical equipment is becoming more and more extensive, in order to improve the overall performance of electrical equipment, the use of frequency conversion energy-saving technology has a good effect. Frequency conversion technology can not only improve the operating efficiency of electrical equipment, but also reduce the operating loss of equipment. The following article ...

The inverter is a device that converts the power supply into the power supply of the power conversion, which is between the power supply and the electrical equipment. The inverter is a typical power electronic device, and its hardware core is power electronic components and microprocessor chips. Power electronic components, input and output copper bars and front-end ...

The signal of the catalyst feed control valve of a company's DCS system (distributed control system) intermittently appears OOP (output signal line break) alarm, and the control valve is fully opened instantly, resulting in abnormal fluctuations in catalyst flow, which seriously affects the safe and stable operation of the device. Fault cause analysis and treatment ...

1. Detection of fixed resistors. A. Connect the two pen pens (regardless of positive and negative) with the pins at both ends of the resistor to measure the actual resistance value. In order to improve the measurement accuracy, the range should be selected according to the magnitude of the nominal value of the resistance to be measured. Due to the nonlinear relationship of the ohmic scale, its ...

The basic principle of vector control is to measure and control the stator current vector of the asynchronous motor, and control the excitation current and torque current of the asynchronous motor according to the principle of magnetic field orientation, so as to achieve the purpose of controlling the torque of the asynchronous motor. Specifically, the stator of the asynchronous motor ...

In the process of motor starting (acceleration), the motor should not only bear the load torque of steady speed operation, but also bear the acceleration torque, if the production machinery has no special requirements for the starting (acceleration) time, the starting (acceleration) time can be appropriately extended to avoid the peak current. If the production machinery is ...

Introduction to the main products and functions 1.1 Water supply frequency conversion cabinet (1) Ordinary water supply frequency conversion cabinet: this product can control a water pump motor frequency conversion water supply and a water pump motor power frequency water supply at the same time, and the power of the water pump motor is between 0.75KW and 5.5KW. The water supply capacity of the product can meet the needs of ...

1. Why is the leakage circuit breaker easy to trip when using the inverter? This is because the output waveform of the inverter contains higher harmonics, and the motor and the cable between the inverter and the motor will generate a leakage current, which is much larger than that when the motor is driven by the power frequency. ...

The cause of the leakage problem We all know that the three-phase stator winding of the motor flows through the current to produce a rotating magnetic field, according to the principle of magnetoelectric induction, the shell of the motor will produce an induced electromotive force, the size of this electromotive force depends on the size of the switching frequency of the inverter IGBT, due to the high ...

An electric energy control device is used in many industries, which can play a good role in energy saving. In the process of using the inverter, there will be noise and vibration problems, so what are the causes of these problems? And how to deal with it? Below the small ...

Injection molding is one of the main molding methods to make thermoplastics into various products, compared with other plastic molding methods, injection molding method has the advantages of molding products with complex structure and size, strong adaptability to plastics, short molding cycle, high production efficiency and easy to realize automation.

Although there are many types of inverter maintenance and the circuit is constantly updated, the faults are nothing more than overcurrent, overvoltage, undervoltage, overload, overheating, output unbalance, no display and other faults. In the process of inverter maintenance, we often encounter some accessories for a while...

Following the last release of the circuit breaker Q&A, we have received new circuit breaker inquiries one after another, and this time we have selected the questions about the "protection function" with a high interest rate for answers: (1) What exactly is a "protection function"? (2) How should I look at the "action characteristic curve"? (3) When selecting, facing ...

Take Fujifilm's FRENIC-VP (F1S)/MEGA (G1S) series inverters as an example: J01 PID control function activation. J01=0: PID does not operate, the inverter does not set the PID function or uses external PID adjustment. J01=1: PID positive action (negative feedback). J01=2: PID Reverse ...