Permanent magnet energy convertor

An energy conversion system comprising a plurality of permanent magnet energy convertors arranged next to each other along their rotational axis, wherein said permanent magnet energy converters each comprise:

• a circumferential stator structure including a stator magnet having a spiral geometry, wherein the stator magnet has a U-shaped cross-section and comprises a plurality of U-shaped magnets, such that a first leg of the U-shaped cross-section forms a first magnetic pole and a second leg of the U-shaped cross-section forms a second magnetic pole;
• and
• an elongated rotor structure positioned within the circumferential stator structure and configured to rotate about a rotational axis, the elongated rotor structure having a first end and a second end,
• wherein:
• the elongated rotor structure comprises a first elongated core element and a second elongated core element;
• the first elongated core element and the second elongated core element are formed from a magnetizable material;
• both ends of the first elongated core element are aligned with the first magnetic pole of the stator magnet;
• both ends of the second elongated core element are aligned with the second magnetic pole of the stator magnet;
• the elongated rotor structure further comprises at least one permanent magnet arranged to magnetize each of the first elongated core element and the second elongated core element, such that both ends of the first elongated core element are attracted to the first magnetic pole of the stator magnet and both ends of the second elongated core element are attracted to the second magnetic pole of the stator magnet;
• the elongated rotor structure further comprises a first magnetic coil structure for reversing a magnetic polarity of a first end of the first elongated core element and the second elongated core element, and the elongated rotor structure further comprises a second magnetic coil structure for reversing a magnetic polarity of a second end of the first elongated core element and the second elongated core element;
• a gap is present between the rotor structure and the circumferential stator structure, such that a width of the gap varies about a circumference of the circumferential stator structure;
• and
• the width of the gap varies between a minimal gap and a maximal gap.