Magnetic field measuring device for valve hall of mixing valve of controllable commutation converter

The invention relates to a magnetic field measuring device for a valve hall of a mixing valve of a controllable commutation converter. The device comprises a power supply unit and a sensing unit which is positioned in the valve hall of the mixing valve and is connected with the power supply unit, the sensing unit comprises a plurality of magnetic sensors arranged at different positions of the internal space of a valve hall of the mixing valve of the controllable commutation converter, and the plurality of magnetic sensors work cooperatively to obtain magnetic field information of a plurality of positions of the space and send the magnetic field information to the signal processing unit for processing; the magnetic sensor comprises a plurality of low-frequency electromagnetic field probes, and a sensor array is formed by adopting a planar array type multi-probe deployment mode; and the power supply unit supplies power to the sensing unit. Compared with the prior art, the three-dimensional magnetic field measur