Three-phase motor current symmetry detection method and device, controller and vehicle

The invention relates to a three-phase motor current symmetry detection method and device, a controller and a vehicle. The detection method comprises the steps: acuiqring three-phase current of a three-phase motor; determining a numerical value of a target phase current based on any two phases of currents in the obtained three-phase current; and determining whether the three-phase current is symmetrical based on the value of the target phase current and the obtained current of the corresponding phase in the three-phase current. According to the technical scheme of the embodiment of the invention, the method can achieve the detection of the symmetry of the three-phase current through an adversarial method through a software program, does not need to change a hardware circuit, and can solveproblems that a conventional scheme is higher in hardware cost and is longer in hardware change period. 本公开涉及一种三相电机电流对称性检测方法、装置、控制器及车辆，该检测方法包括：获取三相电机的三相电流；基于获取的三相电流中的任意两相电流，确定目标相电流的数值；基于目标相电流的数值与获取的三相电流中对应相的电流，确定三相电流是否对称。本公开实