This article briefly describes the characteristics of voltage and current Hall sensors with magnetic compensation function, and focuses on its application in periodic measurement, control, protection, etc. Because Hall sensors have good linearity, excellent dynamic response performance, high measurement accuracy, wide range, strong overload capacity, high sensitivity, small size, light weight, strong anti-interference ability, zero magnetic flux in the iron core after compensation, and can be used when installed on the line, while traditional sensors can measure sinusoidal signals, have long response time, high power consumption, and large size, Hall sensors have been successfully applied in the monitoring, control, display and protection of power systems. With the development of power electronics technology, Hall sensors have also been widely used in rectification, inversion, frequency conversion, chopping, AC voltage regulation, AC speed, detection, protection and control of non-sinusoidal periodic quantities. The following is a brief introduction to typical applications in electrical measurement and power electronics technology.
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