Magnetic inductor, electromagnetic pump comprising such a magnetic inductor and method for manufacturing a magnetic inductor

A magnetic inductor for an electromagnetic pump, the magnetic inductor being intended to be power supplied by means of a polyphase current comprising at least two phases,

• the magnetic inductor comprising:
• a magnetic inductor body extending longitudinally,
• for each of the phases of the polyphase current, N pairs of elementary coils of the same winding direction following each other from the first pair to Nth pair along the magnetic body (101), N being an integer greater than or equal to 2, each of the pairs comprising a first and a second elementary coil which follow one another along the magnetic inductor body, each elementary coil including two ends, one of which is an input type end and the other of which is an output type end,
• wherein the pairs of elementary coils are distributed along the magnetic inductor body so as to provide a phase alternation and to provide a magnetic field sliding along the magnetic inductor body,
• wherein for each of the phases a connection between the elementary coils associated with said phase is as follows:
• the first and the second elementary coil of the first pair are intended to be respectively connected to one of a current input and a current output of said phase and to the other of the current input and the current output of said phase;
• for each of the first to the N−1st pair, the first elementary coil has one of the ends (I, O) thereof connected to the end of the same type of the first elementary coil which directly follows it along the magnetic inductor body;
• for each of the second to Nth pair, the second elementary coil has one of the ends (I, O) thereof connected to the end of the same type of the second elementary coil which directly precedes it along the magnetic inductor body;
• and
• for the Nth pair, the first and second elementary coils are connected in series.