In the factory, a fan suddenly stopped.Maintenance personnel inspected the motor but found no obvious abnormalities in the wingdings, they also checked the mechanical components, finding that the fan was not jammed. Yet, the fault log of the variable-frequency drive (VFD) clearly showed an over-curr...... READ MORE

Come to think of it, electric welding is perhaps the trade in industrial manufacturing that relies most heavily on experience.Veteran welders often judge current stability with their own eyes—observing the steadiness of the arc, the amount of spatter, and the quality of the weld bead formation. This...... READ MORE

A 200MW/400MWh shared energy storage power station has officially been connected to the grid in Xingning, Meizhou.According to public reports, the facility is equipped with 80 energy storage battery units—each with a capacity of 5MWh—and represents a total investment of approximately 480 million yua...... READ MORE

In factory workshops, freight yards, and construction sites, one of the most common pieces of equipment is the overhead crane—also known as a bridge crane. It travels along overhead rails, lifting and horizontally moving heavy loads—such as tons of steel coils or structural components—to designated...... READ MORE

At midday, when the sunlight is strongest, the village's voltage actually spikes—a phenomenon driven by the proliferation of distributed photovoltaic systems. This raises a critical question: what specific parameters should be monitored at this voltage measurement point within the distribution netwo...... READ MORE

On September 29, the China Electric Power Planning & Engineering Institute released six think-tank reports in Beijing, including the debut of Outlook on Trends in the Bidirectional Empowerment of AI and Energy. One figure from the report was cited repeatedly: as of June 2026, domestic energy compani...... READ MORE

800V platform, 480kW, liquid-cooled charging guns, currents up to 600A or even higher — the specs of ultra-fast charging equipment have become increasingly impressive in recent years.But as power levels rise, a readily overlooked challenge emerges:Where exactly is the current measured, and what devi...... READ MORE

When people talk about large-scale photovoltaic power plants, most imagine vast arrays of stationary solar modules. Yet in the Gobi Desert of Northwest China, mountainous areas in North China and other regions, an increasing number of ground-mounted power plants no longer simply fix modules in place...... READ MORE

Compared to the high currents found in energy storage PCS units or wind power converters,HVDC and SSTrelated power electronic equipment, the motor in a washing machine might seem insignificant. the motor in a washing machine might seem insignificant.An operating current of a few amperes—with peaks...... READ MORE

When transformers are mentioned, most people still picture the traditional setup: the primary side connects to the power grid, and the secondary side delivers power—stepping down, for instance, from 10kV to 400V or from 35kV to 10kV—with the core and windings serving as the essential components.Soli...... READ MORE

On September 17, the inauguration ceremony for a famous company offshore wind farm in the German North Sea took place.The project is defined by a striking figure: 960 megawatts.It comprises 64 Vestas V236-15.0MW turbines, all in the 15-megawatt class.The rapid development of HVDC and SST technologie...... READ MORE

Welding is an ancient craft, yet modern inverter welding machines increasingly resemble digital power electronic devices.Welding current is no longer a simple, constant output. Under conditions such as short-circuit transfer or pulse transfer, the current fluctuates continuously as the droplet forms...... READ MORE

On September 8, the first plateau mountain grid-type wind turbine developed by SPIC Yunnan International in collaboration with Several well-known institutions in Yunnan and entered a three-month trial operation stage. In addition, there are still questions to be answered about 3 times the fault ride...... READ MORE

The business is becoming increasingly complex.Professionals in the commercial air conditioning sector have likely noticed a sudden surge of variables within the industry this year.In May, the standard GB/T 47620-2026, Test Methods for Energy Efficiency of Central Air Conditioning Cold/Heat Source Un...... READ MORE

While the power ratings of wind turbines continue to rise, the thermal environment within the converter cabinet does not remain constant at the 25°C reference temperature often cited in sensor specifications. Industry discussions regarding wind turbine current sensing typically focus on bandwidth, a...... READ MORE

On September 1, GB/T 47241—2026, Technical Guidelines for Virtual Power Plants, officially came into effect. This is a recommended national standard, it was released on February 27, 2026, and implementation begins today.In recent years, virtual power plant pilot projects have been scattered across v...... READ MORE

In modern, next-generation power systems, electrochemical energy storage stations serve as critical infrastructure for peak shaving and valley filling, grid frequency regulation, and the integration of new energy sources. Physically, a complete energy storage system typically comprises an Energy Man...... READ MORE

On November 1, 2026, GB/T 18487.2-2026, Electric vehicle conductive charging system—Part 2: Electromagnetic compatibility requirements for off-board conductive charging equipment, officially came into effect, superseding the 2017 version. According to the National Standard Information Public Service...... READ MORE

Energy efficiency evaluation for multi-split air conditioning (heat pump) units has long since moved beyond looking at a single rated operating condition.The current mandatory national standard, GB21454-2021, employs metrics such as SEER, APF, IPLV(C), and HSPF—depending on the specific type of mult...... READ MORE

Subway trains are becoming increasingly quiet.They are quieter at startup, accelerate more smoothly, and generate less high-frequency noise within the passenger compartments.However, inside the traction converters located at the bottom of the train, the situation is actually becoming more complex.Pe...... READ MORE