A motor integrated inverter apparatus includes a drive motor on which a decelerator is installed, and an inverter installed to be directly connected to the drive motor. The inverter includes an inverter cover installed on a side of the drive motor and having an installation space defined therein, a capacitor having the installation space defined in the inverter cover so that an end of the drive shaft is inserted into the installation space, a control board installed on a side of the capacitor, and a cooling part installed between the control board and the capacitor.

A temperature in an electric machine is determined based on temperature-dependent output values of a first temperature sensor and of a second temperature sensor. The first temperature sensor has a characteristic curve having a plurality of characteristic curve branches, wherein each characteristic curve branch is associated with a specific temperature range. The output value of the second temperature sensor is used to select a characteristic curve branch; the output value of the first temperature sensor is used to determine the temperature from the selected characteristic curve branch.

A motor control device controls a driving of a motor having a motor winding. The motor control device includes a motor control unit and a parameter setting unit. The motor control unit controls the driving of the motor. The parameter setting unit sets a control parameter related to a driving control of the motor such that at least one of a motor torque and a motor speed is variable according to a system temperature.

A motor control device controls a driving of a motor having a motor winding. The motor control device includes a motor control unit and a parameter setting unit. The motor control unit controls the driving of the motor. The parameter setting unit sets a control parameter related to a driving control of the motor such that at least one of a motor torque and a motor speed is variable according to a system temperature.

An electrical power conversion apparatus is obtained which can accurately estimate a temperature of a rotating machine when a state of its cooling device for cooling it changes, and reliably carry out its protective operation, so that its failure to be brought about because of its high temperature state can be prevented. A control device of the apparatus comprises: a rotating machine losses calculator for calculating losses of the rotating machine by using its output status; a cooling-device state estimation device for estimating a state of the cooling device from a temperature detection value of a temperature detector for detecting a temperature of the rotating machine; and a rotating machine temperature calculation device for estimating a temperature at a predetermined position of the rotating machine, based on a rotating machine's losses calculation value of the rotating machine losses calculator and an estimation result of the cooling-device state estimation device.

An electrical power conversion apparatus is obtained which can accurately estimate a temperature of a rotating machine when a state of its cooling device for cooling it changes, and reliably carry out its protective operation, so that its failure to be brought about because of its high temperature state can be prevented. A control device of the apparatus comprises: a rotating machine losses calculator for calculating losses of the rotating machine by using its output status; a cooling-device state estimation device for estimating a state of the cooling device from a temperature detection value of a temperature detector for detecting a temperature of the rotating machine; and a rotating machine temperature calculation device for estimating a temperature at a predetermined position of the rotating machine, based on a rotating machine's losses calculation value of the rotating machine losses calculator and an estimation result of the cooling-device state estimation device.

A system for mounting a motor temperature sensor includes: a hairpin wound stator including a stator core having a plurality of slots, and a plurality of hairpins inserted into the slots of the stator core; and a motor temperature sensor including a sensor element and a sensor housing covering the sensor element, wherein the sensor housing is detachably fitted into one of the plurality of hairpins.

A system for mounting a motor temperature sensor includes: a hairpin wound stator including a stator core having a plurality of slots, and a plurality of hairpins inserted into the slots of the stator core; and a motor temperature sensor including a sensor element and a sensor housing covering the sensor element, wherein the sensor housing is detachably fitted into one of the plurality of hairpins.

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.