A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. One method includes receiving, by a controller, a parameter of a first motor on a mining machine from a first parameter sensor on a mining machine. The method also includes receiving, by the controller, a parameter of a second motor on the mining machine from a second parameter sensor on the mining machine. The method also includes outputting an alarm signal, by the controller, upon (1) determining that at least one of the parameters of the first motor and the second motor exceeds a parameter threshold and (2) determining that the parameter of the first motor differed from the parameter of the second motor by at least a difference threshold for a predetermined amount of time.

A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. One method includes receiving, by a controller, a parameter of a first motor on a mining machine from a first parameter sensor on a mining machine. The method also includes receiving, by the controller, a parameter of a second motor on the mining machine from a second parameter sensor on the mining machine. The method also includes outputting an alarm signal, by the controller, upon (1) determining that at least one of the parameters of the first motor and the second motor exceeds a parameter threshold and (2) determining that the parameter of the first motor differed from the parameter of the second motor by at least a difference threshold for a predetermined amount of time.

A motor includes a stator including a terminal and a casing that houses the stator, in which the casing includes a casing body with high thermal conductivity that includes an opening in which the terminal is disposed and houses the stator and a casing block disposed in the opening and with an insulating property and high thermal conductivity, and the casing block includes a housing part that houses a distal end portion of the terminal.

A motor includes a stator including a terminal and a casing that houses the stator, in which the casing includes a casing body with high thermal conductivity that includes an opening in which the terminal is disposed and houses the stator and a casing block disposed in the opening and with an insulating property and high thermal conductivity, and the casing block includes a housing part that houses a distal end portion of the terminal.

An embodiment relates to a sensing device comprising: a rotor; and a stator arranged on the outer side of the rotor, wherein the stator comprises a stator holder and a stator ring arranged on the stator holder; the stator ring comprises a body, a plurality of teeth formed to protrude from the inner peripheral surface of the body, and a protrusion part formed to protrude from the outer peripheral surface of the body; and, when seen in the radial direction, the protrusion part is arranged between the teeth and comprises at least two protrusions arranged to be spaced from each other. Accordingly, the coupling force between the stator holder and the stator ring can be improved.

An electric power conversion device including a converter ECU (51) configured to control a switching device (33) via a gate driver (52), and an electronically insulating support member (115) supporting the control unit. The support member is provided with a first surface (116) supporting the control unit, and a second surface (117) facing away from the first surface, a signal line connected to the control unit extending along at least one of the first surface and the second surface.

A system for detecting overloads of a motor comprises a motor configured to receive power via a lead line, a first sensing device configured to sense a temperature of a motor, and a second sensing device electrically coupled to the motor and configured to detect a target current of the motor and trigger a contact of the lead line associated with second sensing device when the target current equals or exceeds a trip value.

A system for detecting overloads of a motor comprises a motor configured to receive power via a lead line, a first sensing device configured to sense a temperature of a motor, and a second sensing device electrically coupled to the motor and configured to detect a target current of the motor and trigger a contact of the lead line associated with second sensing device when the target current equals or exceeds a trip value.

A stator for a rotary electric machine includes a stator core and a stator winding. The stator core has a hollow cylindrical shape and includes slots. The stator winding includes segment conductors held in the slots. The slots extending outward in a radial direction from an inner peripheral surface of the stator core. The slots include first and second slots. The second slot is shallower than the first slot. The segment conductors include a segment conductor including a first rectilinear portion held in the first slot, a second rectilinear portion held in the second slot, and a coupler coupling the first rectilinear portion and the second rectilinear portion to each other. The first rectilinear portion and the second rectilinear portion protrude from an end surface of the stator core.

A stator for a rotary electric machine includes a stator core and a stator winding. The stator core has a hollow cylindrical shape and includes slots. The stator winding includes segment conductors held in the slots. The slots extending outward in a radial direction from an inner peripheral surface of the stator core. The slots include first and second slots. The second slot is shallower than the first slot. The segment conductors include a segment conductor including a first rectilinear portion held in the first slot, a second rectilinear portion held in the second slot, and a coupler coupling the first rectilinear portion and the second rectilinear portion to each other. The first rectilinear portion and the second rectilinear portion protrude from an end surface of the stator core.