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The Problem of Heating in the Application of Hall Current Sensor of High Frequency Rectifier Power Supply

Release Time：2023-07-24

With the vigorous development of new energy, the application scenarios of high-frequency rectifier power supply AC/DC are becoming more and more extensive. The heating phenomenon of open-loop Hall current sensors is particularly common in the use of high-frequency rectification. After a period of time, high temperatures will be generated, and the sealants of some sensors will melt and flow out. This phenomenon is a heating phenomenon caused by the eddy current generated by the magnetic material in the high frequency state.
Hubei Huaguan Photoelectric Measurement and Control Equipment Co., Ltd. has developed a Hall current sensor applied to 0-100KHz high frequency rectifier power supply. The temperature rise of Hall current sensor in 0-100KHz high frequency state meets national standards.
Technical indicators are as follows:
Input range: DC0-100KA;
Output range: DC0-4V V,0-5V,0-10V, etc
Power supply: DC ± 15V, DC ± 12V,DC24V,AC220V, etc

The two-stage automatic temperature compensation technology is adopted to solve the problem of temperature change of precision instruments and electronic devices and ensure the stability of long-term operation.

● The sensor output signal is isolated from the measured high current and high voltage to ensure the safe operation of the current stabilization system, control system, protection system and display.

The unique magnetic core structure design solves the interference of stray magnetic field and ensures the accuracy of the sensor.

All core components are military grade devices, improve product reliability.

● The output signals are isolated from each other and do not interfere with each other, which makes the matching of the high-current DC control system more convenient.

The two-part docking mode of the opening type is very convenient for installation, use and maintenance.

● Full epoxy resin encapsulation, to avoid the corrosion of the circuit in the harsh environment, improve the service life and stability of the sensor.

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In December 2022, a company in Gansu, the first phase of 25000 tons of lithium-electric copper foil was successfully put into operation, the power supply with 400 sets of Hubei Huaguan KDA-D-15KA high-frequency DC sensor once put into operation.

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