News_Zhejiang Rihong Inverter Co., Ltd.

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05月 Provincial leaders come to guide Provincial leaders come to guide
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05月 Four control methods of inverter to motor U/f constant control U/f control is to change the voltage of the motor power supply while changing the frequency of the motor power supply, so that the magnetic flux of the motor is kept constant. In a wide speed regulation range, the efficiency and power factor of the motor do not decrease. . Because it is the ratio of the control voltage (Voltage) to the frequency (Frequency), it is called U/f control. The main problem of constant U/f control is that the low-speed performance is poor. When the speed is extremely low, the electromagnetic torque cannot overcome the large static friction force, and the torque compensation of the motor cannot be properly adjusted and adapt to the change of load torque; followed by The actual speed of the motor cannot be accurately controlled. Since the constant U/f frequency converter is a speed open-loop control, it can be seen from the mechanical characteristic diagram of the asynchronous motor that the set value is the stator frequency, which is the ideal no-load speed, and the actual speed of the motor is determined by the slip rate, so U/ The stable error existing in the f constant control method cannot be controlled, so the actual speed of the motor cannot be accurately controlled.
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05月 Common faults and corresponding countermeasures of soft starter in daily application The following analyzes the common faults and corresponding countermeasures of soft starters in daily applications: 1. During the debugging process, there is a phase loss fault reported at the start, the soft starter fault light is on, and the motor does not respond. The reason for the failure may be:
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05月 The influence of the distance between the inverter and the motor on the system and the measures In the industrial use site, the distance between the inverter and the motor can be roughly divided into three situations: long distance, medium distance and short distance. Within 20m is short distance, 20-100m is medium distance, and above 100m is long distance.
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05月 The development of frequency converter: energy saving and intelligence play the leading role Energy saving and emission reduction is the core value of my country's industrial economic development since the "Twelfth Five-Year Plan". While pointing out the direction for the sustainable development of my country's industry, it effectively drives the sustainable development of my country's inverter industry, making my country's inverter industry.
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05月 Domestic inverters will eventually defeat the monopoly situation of foreign inverters With the gradual maturity of localized production, scale and technology, domestic brands usually have price advantages, and the improvement of quality has also significantly increased the cost performance of domestic inverters, and the market demand will become more and more inclined to the domestic market. It will eventually break the long-term monopoly of foreign inverters, and domestic manufacturers will also form well-known brands.
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05月 Rihong inverter shines brightly at the promotion conference in Yueyang, Hunan On March 15, 2016, Rihong Inverter held a product promotion conference in Yueyang City, Hunan Province. Rihong's inverter and soft starter made all the participants shine. The excellent and stable product performance has attracted the attention of many visitors, and there is an endless stream of people who come to consult.
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05月 A good helper for thin and light mobile phones: tesa launches a new generation of high-performance film tape 61305 In the era of smart phones, ultra-thin mobile phones can bring consumers a strong visual aesthetic, with a slim body, more portable, and more intuitive use convenience. According to incomplete statistics, the average thickness of mobile phones has decreased by 0.22 mm compared to 2016, reaching 7.73 mm!
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05月 Italy plans 7 billion euros to build national high-speed fiber optic network The Italian government's plan to advance an ultra-fast broadband network has been approved by the European Commission. Italy's superfast broadband plan, with a budget of around 4 billion euros, is in line with EU state aid rules, the European Commission said, noting that it would expand internet access without compromising competition.
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05月 2018 Industrial Internet of Things (IIoT) Innovation Conference ended successfully in Beijing The 2018 Industrial Internet of Things (IIoT) Innovation Conference hosted by Shanghai Zewei Information Group (SZ&W Group) was held in Beijing on May 24, 2018 and ended successfully on the 26th. IBM, Cisco, Schneider, Microsoft, Toshiba, Thundersoft , Kingsoft Cloud and other relevant business people gathered together to discuss the innovation of the Industrial Internet of Things in China and the world.
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05月 Notice on Holding "2018 International Conference on Smart City Management and Services" In today's world, with the maturity of artificial intelligence technology, urban management is entering the "smart" era. As the key core of smart cities, artificial intelligence will usher in new development opportunities and challenges. Driven by technological innovation, smart city management will also move to a higher level. More cutting-edge technologies such as artificial intelligence, "Internet +", and 5G communications will be introduced into the field of smart cities, and a new generation of information technology will be deeply integrated with modern cities. , to jointly promote the refined management of the city, and promote the efficient operation and sustainable development of the city.
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05月 Alibaba launches Tmall New Retail, making a huge change in new retail! At the 5th "Beijing Fair", Alibaba Group announced that it will use new retail technologies to carry out in-depth cooperation with the capital's new consumer sector. Alibaba will use new technologies such as big data, cloud computing, and artificial intelligence to build a "new retail city" in Beijing. 高德将与北京市商务委实现地理信息共享，为当地居民打造一个“出行不绕远，办事少跑腿”的便民生活服务平台。阿里巴巴集团提出打造“新零售之城”，旨在为消费者提供全新的品质生活和体验。随后，西安、武汉、天津、福州等多地以速度响应，不到一...