Author Archives: XIAMEN XINGRUIJIA

Under what circumstances should the motor choose a tapered shaft extension?

For small and medium-sized motors, the most common types of shaft extensions are cylindrical and conical; Upon careful observation, it can be observed that motors for lifting and metallurgy generally use conical shaft extensions, while most other load motors use cylindrical shaft extensions. The diameter of the conical shaft extension section varies, so the torsional shear stress borne by the root of the shaft extension is much better than that of the straight shaft, and it is not easy to break the shaft due to metal fatigue caused by alternating stress. Therefore, it is suitable for mechanical equipment with large loads, high inertia, and frequent forward and reverse rotation. It is self-evident to choose conical shaft extension for lifting and metallurgical motors. The motors commonly used in lifting and metallurgical equipment, such as the YZ, YZR, and YZP series, mostly use conical shaft extensions. Compared

What is the effect of adding a sine filter in variable frequency motor control?

In the demand for stepless speed regulation, using a frequency converter is a reasonable choice; However, in the practical application of motors, there are always some cases where power frequency motors are used for frequency conversion. For motor manufacturers, there will be strict differences in the design of power frequency and variable frequency motors, such as special treatment in terms of electromagnetic wire selection, cooling structure, and bearing system quality control. The reason why variable frequency motors are controlled in this way is mainly because when powered by frequency converters, the unique sinusoidal waveform of the power supply will form a regular square wave due to the frequency converter. Especially in high-frequency conditions, the motor will have a high inter turn voltage peak during operation, which has varying degrees of adverse effects on the vibration and noise of the motor, as well as the bearing

What are the adverse consequences of the motor operating at a deviation from the rated voltage state?

Any electrical product, including motor products, has specified the rated voltage for its normal operation, and any voltage deviation will cause adverse consequences to the normal operation of the electrical appliance. For relatively high-end equipment, necessary protective devices are used. When the power supply voltage is abnormal, the power supply is cut off for protection. For very precise instruments, constant voltage power supply is used for adjustment. However, for motor products, especially industrial motor products, the possibility of using constant voltage devices is very small, and there are more situations of power outage protection. For single-phase motors, there are only two types of voltage: high and low, while for three-phase motors, there is also a voltage balance problem. The direct impact of these three voltage deviations is an increase in current or an imbalance in current. According to the technical specifications of the motor, the

Why do most high-voltage motors use star connection method?

For three-phase motors, there are two connection methods for the stator winding: triangular and star. The star connection method connects the tail of the three-phase winding together, and the head of the three-phase winding is connected to the power supply; There are two types of star connection methods: alien connection and inner star connection. The inner star connection motor fixes the star points connected to the three-phase winding at the appropriate parts of the stator winding, with three output terminals leading out. The outer star connection method leads out all the heads and tails of the three-phase winding, and connects and connects them outside the motor. The triangular connection method is to connect the head of one phase winding to the tail of another phase winding, that is, U1 to W2, V1 to U2, W1 to V2, and connect the connection point to the power

Vicor will showcase a modular power conversion solution suitable for 48V regional architecture at WCX 2024

As the automotive industry transitions towards a 48V regional architecture, power system design engineers are seeking new high-voltage power conversion solutions with leading power density, weight, and scalability. Vicor will hold the 2024 International Automotive Design and Engineering Exhibition (WCX) in Detroit from April 16th to 18th ™） Five speeches were given on the topic, detailing its innovative methods for converting 800V and 48V power supplies using a new high-density and scalable power module, combined with proprietary topology and innovative packaging technology. Vicor's speech includes: Implement EM conducted radiation compliance for high-voltage conversion with switching frequencies above 1.3MHz Speaker: Nicola Rosano, Senior Strategic Systems Engineer for Europe, Middle East, and Africa Design a 48V regional architecture to ensure continuous high-voltage power supply for pure electric vehicle (BEV) battery packs Speaker: YK Choi, Senior Field Application Engineer at Vicor Asia Pacific Kang YoungJae, Chief Engineer of

Yokogawa Electric releases OpreX robot management core

Yokogawa Electric Corporation announced that it has developed a software application called OpreXTM Robot Management Core, which belongs to the OpreX Asset Management and Integrity series products. The product will be launched for sale on March 22, 2024. The OpreX robot management core is a key product in Yokogawa Electric's robot operation solution. Multiple types of robots can perform traditional human factory maintenance tasks, and this software can integrate and manage these robots, helping customers maintain facilities safer and more efficiently. In addition, when connected to the control and safety systems of the factory, it can utilize the manufacturing site data obtained by the robot and issue program instructions to the robot, thus taking the first step towards achieving autonomous factory operation. Development background In oil and gas, chemical and other manufacturing factories, some routine tasks need to be carried out in high-risk areas, such

China Unicom Intelligent dysprosium Enterprise Digital Transformation One Stop Toolbox

Main Function Description of the Product China Unicom Cloud Dysprosium Intelligent Technology Co., Ltd. focuses on the characteristics and needs of small and medium-sized manufacturing enterprises, focusing on business management and production intelligent manufacturing scenarios. Following the concept of "from easy to difficult, from point to surface, long-term iteration, and multi-party collaboration", it provides digital transformation services from research, consultation, diagnosis, training, production, delivery, management, operation and maintenance, and creates a "small, light, fast, and accurate" one-stop toolbox to help enterprises reduce costs Efficiently digitize. The toolbox contains four core scenarios: 1. Integration of business, finance and tax: To build a real-time capture and analysis system for business and financial data for enterprises, achieve synchronization and real-time communication between business and financial data, provide panoramic and financial linkage data support for enterprise decision-making, further release financial value, feedback business operations, and empower scientific decision-making. 2.

To build a new highland in the industrial display field, Tianma Microelectronics aims to be practical, in-depth, stable, and detailed

In today's industrial display technology field, with the rapid development of technology and the continuous evolution of market demand, enterprises are facing unprecedented challenges and opportunities. Especially in the wave of intelligent manufacturing and industrial automation, the role of high-end display technology has become increasingly important. How enterprises find a balance between technological innovation, market adaptation, and sustainable development has become the key to determining their future success or failure. At the recently held "Gathering Small to See Big, Boundless Future - Tianma Microelectronics Special Display Roadshow 2023" event, Tianma Microelectronics not only reviewed the innovation process of the past 40 years, but also gave a high outlook on future development strategies and technological directions. During the roadshow, the executive team of Tianma Microelectronics received in-depth interviews from media such as China Industrial Control Network. From their persistent pursuit of quality and keen insight into

Native digital delivery empowers Huainan Panji Power Plant to build a smart benchmark in the thermal power industry

Thermal power, a traditional power generation method, remains the most stable and reliable source of electricity today, playing an important role as the "ballast stone" for the safety of electricity in the whole society. However, with the advancement of the "dual carbon" goal and the increase in energy costs in recent years, the thermal power industry, which mainly uses coal and natural gas as raw materials, is facing unprecedented challenges. Building a "safe, efficient, and low-carbon" smart power plant is imperative. At the beginning of this year, a brand new digital smart benchmark power plant, Huainan Panji Power Plant (hereinafter referred to as Panji Power Plant), was officially put into operation in the energy capital of Huainan, known as the "Three Gorges of Thermal Power". The first phase of the project has two 660MW ultra supercritical units with an annual power generation capacity of 6.6

ABB Capital Markets Day 2023: Setting New Standards

The future focus is on maintaining consistency in operational models, accelerating growth and continuous improvement Raise the long-term comparable income growth target to 5-7% Raise the target operating profit margin before interest, tax, and amortization to 16-19% Release more ambitious net zero scientific goals for 2030 and 2050 Today, ABB held a Capital Markets Day event at its electrical business factory in Florence, Italy. During the event, ABB Group CEO Robion, CFO Tianyi, and the presidents of ABB's four major business units introduced the latest developments in ABB's successful transformation, financial goals, and how the company can benefit from key long-term trends related to its business. In addition, the head of ABB Group's sustainable development affairs also introduced the latest developments in the company's sustainable development agenda, including more ambitious net zero targets for 2030 and 2050. "During the past three years of transformation, we