Rotating electrical machine
First Claim
1. A rotating electrical machine, comprising:
- a housing;
a rotor including a field winding, the rotor being coaxially fixed to a rotation shaft which is supported by the housing in a rotatable manner;
a stator including an armature winding, the stator being fixed to the housing so as to surround the rotor;
a slip ring fixed to the rotation shaft;
a brush disposed at a position in contact with the slip ring;
urging member for urging the brush against the slip ring;
a temperature detector that acquires information on a temperature of the brush;
a rotation sensor that acquires information on a rotation angle of the rotation shaft; and
a processor storing instructions configured to implement;
a wear amount calculation section for acquiring the temperature of the brush based on temperature information including output information of the temperature detector, and for calculating a total wear amount of the brush by integrating a product of a value corresponding to the temperature of the brush, the value being a wear amount function defined as a wear amount per unit sliding distance of the brush with the temperature of the brush used as a variable, and a value including a rotational speed of the rotor determined based on a temporal change of the rotation angle of the rotation shaft, with respect to time from immediately after start of use of the brush to a current time.
1 Assignment
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Accused Products
Abstract
Provided is a rotating electrical machine, including: temperature information acquisition means for acquiring information on a temperature of a brush; rotation information acquisition means for acquiring information on a rotation angle of a rotation shaft; and a wear amount calculation section for acquiring the temperature of the brush based on temperature information including output information of the temperature information acquisition means, and for calculating a total wear amount of the brush by integrating a product of a value corresponding to the temperature of the brush, the value being a wear amount function defined as a wear amount per unit sliding distance of the brush with the temperature of the brush used as a variable, and a value including an rotational speed of a rotor, with respect to time from immediately after start of use of the brush to a current time.
29 Citations
12 Claims
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1. A rotating electrical machine, comprising:
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a housing; a rotor including a field winding, the rotor being coaxially fixed to a rotation shaft which is supported by the housing in a rotatable manner; a stator including an armature winding, the stator being fixed to the housing so as to surround the rotor; a slip ring fixed to the rotation shaft; a brush disposed at a position in contact with the slip ring; urging member for urging the brush against the slip ring; a temperature detector that acquires information on a temperature of the brush; a rotation sensor that acquires information on a rotation angle of the rotation shaft; and a processor storing instructions configured to implement; a wear amount calculation section for acquiring the temperature of the brush based on temperature information including output information of the temperature detector, and for calculating a total wear amount of the brush by integrating a product of a value corresponding to the temperature of the brush, the value being a wear amount function defined as a wear amount per unit sliding distance of the brush with the temperature of the brush used as a variable, and a value including a rotational speed of the rotor determined based on a temporal change of the rotation angle of the rotation shaft, with respect to time from immediately after start of use of the brush to a current time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification