Market demand for current sensors

The vigorous promotion of domestic smart grids has stimulated the market demand for current sensors to expand. With the increase of electricity in the city, traditional methods of current measurement can no longer meet the current situation of electricity consumption. Therefore, new types of current sensors will be applied.

Fiber-optic current sensors have gained increasing attention due to their excellent insulation and anti-jamming capabilities, as well as their high measurement accuracy.

China introduced the XDGDL-1 fiber-optic current sensing system, which realizes all-digital closed-loop control of the pipeline current sensing system. It is characterized by good stability, linearity, and high sensitivity, and it meets the requirements for high-precision measurement of a large range of range.

At the same time, the system has developed a telescopic structure that can be wound in the field. It is easy to install and can avoid the interference of stray magnetic fields. The measurement error of the bus eccentricity is less than plus or minus 0.1%, and a high-precision signal conversion scheme is realized for the rectifier. Control equipment provides high-precision analog signals and standard digital communication interfaces.

In addition to this, there is also a closed-loop current sensor that is emerging as an essential component of converters in wind turbines.

In the converter, a very large number of small or PCB current sensors are required, which belong to a closed-loop control system to ensure that the inverter can respond quickly. The simultaneous action of the inverter and the generator ensures that the continuous power of the grid is provided over a wide range of wind speeds after the wind turbine is started, until the turbine is stopped at the upper wind speed.

In order to achieve the best working condition of the driver, it is necessary to continuously measure the current in operation. The performance of the current sensor directly affects the quality and response time of the circuit control, which is why it can be widely used in the wind power industry. . At the same time, closed-loop current sensors not only have high bandwidth and fast response time, but also have advantages such as good linearity and high accuracy.

With the continuous development and upgrading of smart grids, current sensors are constantly improving and improving in terms of technology, design, and utility, and they have a major role in the current measurement of metallurgy and chemical industries.