Patent ID: 7759831

Claim:
A generator-motor apparatus, comprising: a motor which includes a rotor and a stator, and serves as an electric power generator and an electric motor; a first electrode plate and a second electrode plate which are arranged on an end surface of the motor, and formed in a substantial horseshoe shape so as to surround a rotating shaft of the motor; and a multi-phase switching element group which controls an electric current supplied to the stator, wherein the number of the multi-phase switching element groups corresponds to the number of phases of the motor; each multi-phase switching element group includes a plurality of arms each of which includes a first switching device and a second switching device that are electrically connected to each other in series between the first electrode plate and the second electrode plate; a plurality of the first switching devices is directly attached to the first electrode plate; a plurality of the second switching devices is directly attached to the second electrode plate; and each of the plurality of the first switching devices and the second switching devices includes a first electrode, a second electrode, a switching element electrically connected to the first electrode and the second electrode and sandwiched between the first electrode and the second electrode, and a sealing member which is provided around the switching element and which contacts the first electrode and the second electrode.