MAGNETIC GEARED ROTARY MACHINE, POWER GENERATION SYSTEM AND MAGNETIC POLE PIECE ROTOR

• Main Authors: STUART CALVERLEY, DAVID POWELL, MATSUSHITA TAKATOSHI, IKEMI TAKESHI, SASAKI MIKITO
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2022
• Subjects: BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a magnetic geared rotary machine, a power generation system and a magnetic pole piece rotor that can reduce eddy current loss while suppressing an influence on a magnetic path of a stator magnet.SOLUTION: A magnetic pole piece 32 of a magnetic geared rotary machine 10 includes an outer edge 60 and one or more inner edges 70. The outer edge 60 forms, in a radial section of the magnetic geared rotary machine 10, a first surface 51 of the magnetic pole piece 32 which faces a rotor 40 across a first air gap G1 and a second surface 52 of the magnetic pole piece 32 which faces a stator 20 across a second air gap G2. The inner edges 70 are located radially between the first surface 51 and second surface 52 to be encircled with the outer edge 60, and define one or more air gaps 80 in the magnetic pole piece 32. In the radial section, the first distance L1 radially between the first surface 51 and air gaps 80 is shorter than the second distance L2 radially between the second surface 52 and air gaps 80.SELECTED DRAWING: Figure 4A 【課題】固定子磁石の磁路への影響を抑制しつつ、渦電流損失を低減できる磁気ギアード回転機械、発電システム、磁極片回転子を提供する。【解決手段】磁気ギアード回転機械１０の磁極片３２は、外側縁６０と１以上の内側縁７０を含む。外側縁６０は、磁気ギアード回転機械１０の径方向断面において、回転子４０と第１エアギャップＧ１を隔てて対向する磁極片３２の第１面５１、及び、第２エアギャップＧ２を隔てて固定子２０と対向する磁極片３２の第２面５２を形成する。内側縁７０は、外側縁６０に囲まれるように径方向にて第１面５１と第２面５２との間に位置し、磁極片３２の内部の１以上の空隙８０を画定する。径方向断面において、第１面５１と空隙８０との間の径方向における第１距離Ｌ１は、第２面５２と空隙８０との間の径方向における第２距離Ｌ２よりも短い。【選択図】図４Ａ