Abstract: A wiring module, a combiner box and a converter are provided. In the wiring module, a side of a first switch thereof serves as a positive input terminal and is connected to a positive electrode of at least one direct-current power supply, a side of a second switch thereof serves as a negative input terminal and is connected to a negative electrode of at least one direct-current power supply, and a direct-current power supply which any of the positive input terminal is connected and to which any of the negative input terminal is connected is in a quantity of less than or equal to 1, that is, different direct-current power supplies are not connected in parallel.

Abstract: A method and apparatus for controlling a neutral point clamped inverter circuit, and a neutral point clamped inverter. It is detected that whether the inverter circuit operates in an abnormal state. In a case that the inverter circuit operates in the abnormal state, a control mode of the inverter circuit is changed to a specified control mode in which a transistor that may be damaged is in an off state. In this way, there is not current flowing through the transistor, avoiding damage of the transistor and thereby improving safety of the inverter circuit.

Abstract: A method and apparatus for controlling an inverter circuit, and an inverter. It is detected that whether the inverter circuit operates in an abnormal state. In a case that the inverter circuit operates in the abnormal state, a control mode of the inverter circuit is changed to a specified control mode in which a transistor that may be damaged is in an off state. In this way, there is not current flowing through the transistor, avoiding damage of the transistor and thereby improving safety of the inverter circuit.