Patent ID: 8824169

Claim:
A multiple inverter, wherein said multiple inverter comprising: a neutral line; at least two inverter units, wherein each inverter unit comprises: a three-phase inverter bridge including a plurality of switching devices; a direct current bus, comprising at least one capacitor, said direct current bus and said three-phase inverter bridge are connected in parallel; and an inverter unit output inductor module comprising a first phase inverter unit output inductor module, a second phase inverter unit output inductor module, and a third phase inverter unit output inductor module, wherein each phase inverter unit output inductor module comprises at least one inductor, one terminal of the first phase, the second phase, and the third phase inverter unit output inductor module is coupled correspondingly to the first phase, the second phase, and the third phase of the three-phase inverter bridge, respectively; a neutral line inductor module, comprising at least one inductor, one terminal of said neutral line inductor module is coupled to the midpoint of said direct current bus, another terminal of said neutral line inductor module is coupled to the neutral line of said multiple inverter; three-phase outputs of the multiple inverter, comprising a first phase output, a second phase output and a third phase output, another terminals of the first phase inverter unit output inductor modules of all the inverter units are coupled to the first phase output of the multiple inverter, another terminals of the second phase inverter unit output inductor modules of all the inverter units are coupled to the second phase output of the multiple inverter, another terminals of the third phase inverter unit output inductor modules of all the inverter units are coupled to the third phase output of the multiple inverter.