Motor Temperature Calculation System Using Thermal Equivalent Circuit

A computing system and thermal equivalent technology, applied in the direction of thermometers, thermometers, and temperature measurement of moving solids with direct heat-sensitive electric/magnetic components, can solve problems that take a long time and are difficult to apply to motor shape areas, etc. , to achieve the effect of shortening the calculation time

CN108233636BActive Publication Date: 2020-12-18HYUNDAI MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-12-18

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Abstract

The present application relates to a temperature calculation system of a motor using a thermal equivalent circuit, which includes: a yoke, a first tooth and a second tooth, and a coil member, the yoke is arranged along the inner circumferential surface, the first tooth part and the second tooth part are arranged on the inner peripheral surface of the yoke part while having an interval set in the circumferential direction, the coil member is formed between the first tooth part and the second tooth part and includes a plurality of coils, the system Form the thermal equivalent circuit of the coil member and calculate the temperature of the set portion of the coil member, wherein, by using the radial conduction resistance and the temperature T of the inner side of the coil member c To calculate the outer peripheral surface temperature and the inner peripheral surface temperature of the coil member, the average temperature, and the temperature of the end surface is calculated by using the axial conduction resistance and the average temperature.
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Description

[0001] Cross References to Related Applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2016-0168905 filed in the Korean Intellectual Property Office on December 12, 2016, which is hereby incorporated by reference in its entirety. technical field

[0003] The invention relates to a temperature calculation system of a motor using a thermal equivalent circuit. Background technique

[0004] In electronic devices, an interior permanent magnet synchronous motor (IPMSM) will be described as an example and will be referred to as a motor.

[0005] Since the IPMSM has both the magnetic torque component caused by the permanent magnet and the armature current and the reluctance torque component caused by the d-q axis inductance difference, it can obtain high torque per unit volume.

[0006] However, depending on the driving characteristics of IPMSM, excessive iron loss occurs in the high-speed region, and copper loss occurs because a l...

Examples

Embodiment Construction

[0036] The present invention relates to a temperature calculation system of a motor using a thermal equivalent circuit, which can calculate the temperature of each component according to driving conditions of a drive motor for a vehicle, and can protect the components according to the temperature of the drive motor.

[0037] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Since the dimensions and thicknesses of the various components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings, and for clarity, various parts and regions The thickness may be exaggerated.

[0039] The drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals refer to like elements throughout the specification.

[0040] In the following detailed description, s...