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 control components constitute power units, which belong to strong current or power modules; The main control board, input and output module and display control component with the microprocessor chip as the core constitute the control unit, which belongs to the weak current or control module; Functional expansion connectors and external components form an expansion unit, which is suitable for various working characteristics.
When the inverter is directly connected to the power grid, the deviation of the power grid capacity, grid voltage level and voltage value should be fully evaluated; When indirectly connected to the power grid through the transformer, the transformer capacity, output voltage value and its deviation. The output of the inverter is rich in harmonic content, which not only has different degrees of influence on the motor, but also pollutes the power supply and interferes with other electrical equipment on the power grid.
When the power compensation device is connected to the distribution transformer, the waveform of the input current of the inverter will be distorted, which will deteriorate the performance of the inverter, and the additional heating factor will be added during the operation of the inverter, resulting in the power output of the inverter not reaching the normal level.
In order to obtain a more ideal electromagnetic compatibility effect, the inverter protective fuselage is better to use iron shell, the output cable is shielded with steel pipes, and shielding isolation measures are also implemented between the power unit and the control unit. If necessary, it can be equipped with an input filter or a zero-sequence inductor to cut off the reverse transmission channel of the inverter clutter components as much as possible.
In the actual application process, it can be found that the quality of the inverter of the current supporting motor is uneven, which leads to the poor fit between the inverter and the motor, resulting in two adverse effects: first, the performance level of the motor is poor during operation, and even causes malignant quality accidents such as poor motor performance level and shorter life; Second, the measured parameters are unstable during the performance test of the variable frequency motor, and the test of the adjacent test motor of the same platform is seriously interfered.
|
More on that
|
Fuji Electric keeps pace with the times and adheres to the concept of sustainable development
Fuji Electric (FE), headquartered in Tokyo, under the leadership of Chief Executive Officer Mitsuhiro Kitazawa, announced that it has developed an updated policy on the completion of its development plan for a sustainable society and its corporate vision for environmental protection by 2050.
Sustainable Development Concept ...
|
|
Fuji Electric employees work together to contribute to the natural ecology
Because the waters are intersected and connected, the waste discharged by each country and region is concentrated in the deep sea, and marine garbage has long become a global problem. Most of the marine debris is concentrated in five untouched areas, each of which falls in the Pacific Ocean of China, which is larger than the ...
|
|
Fuji Electric serves the public to create a safe, energy-saving and operable medium frequency induction furnace
As we all know, the foundry industry is the foundation of the development trend of China's processing and manufacturing industry, and the technical development trend of the foundry industry and its level have limited the development trend of the processing and manufacturing industry. Fuji Electric uses the skills it has cultivated over many years to make use of its excellent IGBT technology and electrical ...
|
|
One of the fastest-growing industries in the equipment manufacturing industry - the instrument industry
In 2019, China produced a total of 2786968 sets of test and analysis instruments, compared with 1971477 sets/sets in 2018, and the product demand and effective supply have jumped. In 2019, China's test analysis instrument profession completed the main business income of 31.387 billion yuan, and the proportion of revenue in the instrumentation industry ...
|
|
Fuji Electric's Power Semiconductor Symposium officially kicked off
On March 16, 19, Fuji Electric Power Semiconductor Symposium was held in Guangzhou. More than 90 customers and agents from all over the country were invited. Fuji Electric looks forward to carrying out in-depth communication with you according to the publicity and education content of this seminar, so that everyone can have a good understanding of Fuji Electric.
|
|
Fujifilm inverter – the 7th generation "X Series" industrial 1200V/2400A RC-IGBT module
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 ...
|
|
Launched EGCS laser gas analyzer to support marine systems business
Fuji Electric Corporation (headquartered in Tokyo, Japan; President: Mitsuhiro Kitazawa) announced the official launch of its laser gas analyzer for EGCS to support the marine systems business.
1. Background
To reduce emissions of sulphurs (SOx, substances that can cause air pollution), the International Maritime Organization ...
|
|
Fuji Electric - Why should fans be equipped with frequency converters?
Why should the fan be equipped with a frequency converter? Today, I will discuss it with you. Factory boiler fans, industrial fans, hotel fume fans, etc. all use inverters, so why do fans use inverters?
We all know that many air ducts will have a valve, control ...
|
|
What is the current status of the development of the instrumentation industry?
The localization of high-end instruments has always been the weakness of the domestic equipment manufacturing industry. At this year's National People's Congress and the National People's Congress, this topic was raised by many deputies and committee members, and aroused widespread comments.
What is the current situation of the development of the instrumentation profession? How to break the high-end scientific instrument market by foreign manufacturers for a long time ...
|
|
Fujifilm Drives – How do I identify the electronic components on the inverter circuit board?
The circuit board of the inverter mainly includes the power board, the control board, the driver board and the panel.
1. Resistance
Resistors are represented by the letter R on the circuit board in ohms (Ω), kiloohms (K Ω), and megaohms (MΩ)
The resistor symbol indicates:
1. According to the resistance value characteristics, it can be divided into fixed resistance ...
|
|
China's instrumentation industry is "large in quantity and wide in scope" Scientific and technological innovation is the trend
On November 26, the instrumentation industry is an industry with a high degree of integration of manufacturing and informatization, and it is also one of the most typical industries for the development of high-tech industries. "On November 26, the 2020 Instrumentation Industry Development Summit was held in Shangyu District, Shaoxing City, Zhejiang Province.
|
|
Inverter control motor leakage causes and measures
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 ...
|
|
The inverters we "installed" together in those years
1. First confirm the installation environment of the inverter
I. Operating temperature. The inverter is a high-power electronic component, which is very susceptible to the influence of working temperature, and the product is generally required to be 0-55 °C, but in order to ensure the safety and reliability of the work, it should be considered to leave room for use, and it is good to control it at 4 ...
|
|
Irrigation area remote monitoring water flow operation management scheme Fujifilm ultrasonic flowmeter application
In order to solve the problems of inaccurate metering and billing, difficult collection of water charges, and serious waste of water resources in agricultural irrigation water, modern automatic control, radio frequency triggering and other technologies are used to achieve the goal of paying the fee before using water, charging according to the quantity, automatic metering, and automatic opening and closing of the pump.
|
|
【In-depth Interpretation】Cybersecurity of Safety Instrumented System (SIS).
When a company begins a Safety Instrumented System (SIS) project, the first decision stakeholders must make is to choose the system architecture. By complying with international cybersecurity standards such as IEC 62443 (ANSI/ISA 62443 series of standards) as well as international process industry automation users...
|
|
Fuji Electric plans to increase its production capacity for next-generation power semiconductors by about 10 times by 2024
On July 27, Fuji Electric plans to increase the production capacity of next-generation power semiconductors by about 10 times by fiscal 2024 to cope with the surge in demand for electric vehicles and other forms of electrically powered transportation, according to Nikkei.
According to the data, Fuji Electric ...
|
|
Fuji Electric will expand its production of power semiconductors by an additional 40 billion yen, and may increase the production of power semiconductors by another 50 billion yen in the future
Japan's Fuji Electric plans to invest an additional 40 billion yen (USD 365 million) to expand production of power semiconductors. It is reported that the power semiconductors produced by the company are mainly used in the power system of air conditioners, electric vehicles and other products.
According to Nikkei Asian Review, Fuji Electric ...
|
|
What should I do if the body temperature measured by the forehead thermometer fluctuates? Listen to metrology experts answer top 10 questions about forehead thermometers
During the epidemic, citizens need to have their body temperature measured when they enter communities, companies, and shopping malls, and there are many questions about infrared forehead thermometers, ear thermometers and other appliances. The reporter interviewed experts from the Metrology Department of the Shanghai Municipal Market Supervision Bureau on the issues that the public was concerned about, and answered some questions about the forehead thermometer ...
|
|
Application of Fujifilm ultrasonic flowmeter in the semiconductor industry
Shanghai Jita Semiconductor, located in the Lingang New Area of the Shanghai Free Trade Zone, has a total investment of 35.9 billion yuan to build an 8-inch production line with a monthly production capacity of 60,000 pieces and a 50,000-piece 12-inch special process production line project and a production base of 300mm semiconductor silicon wafers of Shanghai Xinsheng Semiconductor. Lingang 2 iconic semiconductors ...
|
|
Consideration of CO2 emission reduction and progress towards a carbon-free society
Shanghai has issued a red high temperature warning for several days, and the temperature of 40.9°C has tied the highest record since 1873. The root cause of the continuous high temperature and heat wave events in many places in the northern hemisphere is believed to be the global warming trend.
Global warming is happening at an unprecedented rate, and several ...
|
|
Contact
working hours
