Rotor of permanent magnet rotary machine and manufacturing method of rotor
First Claim
1. A rotor of a permanent magnet rotary machine, said rotor comprising:
- a rotary shaft;
a rotor core fixed to a circumferential surface of said rotary shaft;
a plurality of permanent magnets arranged on a circumferential surface of said rotor core at specific intervals along a circumferential direction thereof;
a conducting circuit arranged to surround at least one of said permanent magnets forming one magnetic pole, said conducting circuit including a pair of first conductor sections arranged between magnetic poles formed by said adjacent permanent magnets and a second conductor section electrically connecting the first conductor sections; and
a magnetic material piece arranged on an outer surface of said at least one permanent magnet surrounded by said conducting circuit.
1 Assignment
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Accused Products
Abstract
A rotor of a rotary machine includes a rotary shaft, a rotor core fixed to a circumferential surface of the rotary shaft, a plurality of permanent magnets arranged on a circumferential surface of the rotor core at specific intervals along a circumferential direction thereof, conducting circuits arranged to surround the permanent magnets, and magnetic material pieces arranged on outer surfaces of the individual permanent magnets. Each of the conducting circuits includes a pair of first conductor sections arranged between magnetic poles formed by the adjacent permanent magnets and a pair of second conductor sections electrically connecting the first conductor sections.
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Citations
12 Claims
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1. A rotor of a permanent magnet rotary machine, said rotor comprising:
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a rotary shaft; a rotor core fixed to a circumferential surface of said rotary shaft; a plurality of permanent magnets arranged on a circumferential surface of said rotor core at specific intervals along a circumferential direction thereof; a conducting circuit arranged to surround at least one of said permanent magnets forming one magnetic pole, said conducting circuit including a pair of first conductor sections arranged between magnetic poles formed by said adjacent permanent magnets and a second conductor section electrically connecting the first conductor sections; and a magnetic material piece arranged on an outer surface of said at least one permanent magnet surrounded by said conducting circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of manufacturing a rotor of a permanent magnet rotary machine which comprises:
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a rotary shaft; a rotor core fixed to a circumferential surface of said rotary shaft; a plurality of permanent magnets arranged on a circumferential surface of said rotor core at specific intervals along a circumferential direction thereof; a conducting circuit arranged to surround at least one of said permanent magnets forming one magnetic pole, said conducting circuit including a pair of first conductor sections arranged between magnetic poles formed by said adjacent permanent magnets and a second conductor section electrically connecting the first conductor sections; and a magnetic material piece arranged on an outer surface of said at least one permanent magnet surrounded by said conducting circuit; wherein said magnetic material piece is a generally cylindrical magnetic material piece including magnetic pole portions arranged on the outer surfaces of said permanent magnets and thin-walled intra-pole portions interconnecting the individual magnetic pole portions, said method of manufacturing the rotor of the permanent magnet rotary machine being characterized by comprising the steps of; forming a magnetic material sheet having grooves which serve as the intra-pole portions and thick-walled parts which serve as the magnetic pole portions by etching a workpiece; and forming said generally cylindrical magnetic material piece by joining opposite ends of the magnetic material sheet to each other. - View Dependent Claims (12)
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Specification