Magnetic sensors have a wide range of industrial applications

In industrial applications, renewable energy systems such as solar energy devices and wind turbines have always been the main growth points for magnetic sensors. On the other hand, various types of motors consume an estimated 45% of the electricity, and if the efficiency of the motor can be improved, it may save a lot of energy. Government legislation aimed at reducing energy consumption is also beneficial for sensors.

Examples of motors using magnetic sensors include low-voltage AC and DC motors, three-phase induction motors, stepper and servo motors, single-phase motors, and compact motor drivers.

In other industrial applications, magnetic sensors can be used for uninterruptible power supplies (UPS), welding systems, robotics, train transportation infrastructure, non road vehicles, and forklifts for machines such as computer servers.

In the field of industrial applications, the most popular type of magnetic sensor is current sensor, including shunt resistors, Hall effect integrated circuits, current sensing transformers, open loop and closed loop Hall devices, and fluxgate sensors. In many applications that measure currents below 50 amperes, such as residential solar inverter applications or small UPS systems, simple resistive bars or shunt are used.

But as the measured current intensity increases, shunt becomes cumbersome and expensive. In applications with high current such as large variable frequency motors, open loop and closed loop Hall sensors use Hall effect ICs in a small package; It can also improve integration by including a dedicated integrated circuit in the package. Hall IC is also used in industrial washing machine frequency converter control applications.

In addition to current sensors, there is also a smaller market for magnetic sensors such as independent Hall effect ICs or magnetoresistive sensor switches, which are used for motor rectification to reduce ripple and improve performance, or for position measurement.