Abstract: The converter includes a plurality of input lines and one or more output lines. Each input line is connected to a group of supply circuits and the supply circuits of each group are connected to different output lines. The electric generator comprises a stator and a rotor. The stator has a plurality of windings. Each winding has a plurality of phases. Each phase comprises bars connected in series. The phases have a first connection at one end, a second connection at the other end and a third connection in an intermediate position between the first and the second connection.

Abstract: A converter has converting groups with a first stage connected to input lines thereof and a second stage connected to output lines. The first and second stages have positive and negative branches that are connected together.

Abstract: A method for operating a matrix converter in which m phases of a generator generating alternating voltage with n (n<m) phases of a load are alternatingly connected via a multiple number of controllable bi-directional switches arranged in an (m×n) matrix, wherein switching over from a selected connected phase of the generator to a selected non-connected phase of the generator takes place in a controlled sequence of commutation instants of the individual switches.

Abstract: A method for operating a matrix converter in which m phases of a generator generating alternating voltage with n (n<m) phases of a load are alternatingly connected via a multiple number of controllable bi-directional switches arranged in an (m×n) matrix, wherein switching over from a selected connected phase of the generator to a selected non-connected phase of the generator takes place in a controlled sequence of commutation instants of the individual switches.

Abstract: The rotary contactor comprises a first part, referred to here for convenience as the fixed part (101), which is adapted to be fixed to the steering column (4), together with a second part, referred to here for convenience as the moving part (102) and adapted to be coupled in rotation to the steering wheel (7) of the motor vehicle. For the temporary coupling of the fixed part (101) in rotation with the moving part (102), retractable locking devices (83, 84) are interposed between the parts (101, 102). These means comprise a retractable first member (8) carried by the moving part (102) and adapted to engage with a second member (40) carried by the fixed part (101), with the first member including a manoeuvrable portion (82) which is adapted to be manoeuvred by the steering wheel (7).