Abstract：In order to monitor current distribution state of parallel silicon carbide（SiC）devices in photovoltaic

inverter，a contactless monitoring solution based on anisotropic magnetoresistive sensor was proposed. According

to practical position of SiC devices on PCB board，multiphysics simulation tool COMSOL was employed to

analyze magnetic distribution around SiC devices. Then，the best location of magnetoresistive sensor was

determined. Current monitoring unit consisting of magnetoresistive sensor，signal conditioning circuit and data

communication interface was formed. Testing of a 1.5 kW photovoltaic inverter prototype was implemented. The

experimental results demonstrate the contactless current mismatch monitoring solution features high bandwidth，

high sensitivity，good linearity and simple circuit structure.

      Key words：photovoltaic；current mismatch monitor；parallel silicon carbide（SiC）；magnetic sensor；contactless