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Apparatus and method for detecting BLDC motor overload

A technology of motor stalling and brushed DC motors, which can be used in measuring devices, emergency protection circuit devices, measuring electricity, etc., can solve the problems of increased cost and difficulty in accurately detecting BLDC motor stalling

Inactive Publication Date: 2020-05-29
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the position detection sensor device is used, the cost of the device for detecting overload of the BLDC motor increases
In addition, in the sensorless method using vector control, even if the BLDC motor is locked, the current continues to flow in the BLDC motor, so it is difficult to accurately detect the BLDC motor locked

Method used

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  • Apparatus and method for detecting BLDC motor overload
  • Apparatus and method for detecting BLDC motor overload
  • Apparatus and method for detecting BLDC motor overload

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Embodiment Construction

[0026] The accompanying drawings for illustrating exemplary embodiments of the present disclosure are referred to in order to fully understand the present disclosure, its advantages, and objects achieved by implementing the present disclosure. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the disclosure. to those skilled in the art. Meanwhile, terms used herein are for describing specific embodiments, not for limiting the present disclosure. The same reference numerals in the figures denote the same components.

[0027] Also, terms such as 'unit', 'module', etc. disclosed in the specification refer to a unit for processing at least one function or operation that can be implemented by hardware, software, or a combination thereof.

[0028] In addition, te...

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Abstract

The present disclosure provides an apparatus for detecting brushless direct current (BLDC) motor overload. The apparatus includes a measurer for measuring a 3-phase current value applied to the BLDC motor to derive a sector value matched with the 3-phase current value, a determiner for determining whether the sector value is normal by comparing the sector value derived by the measurer with a previous sector value that is previously measured, and a driving controller for controlling driving of the BLDC motor according to whether the BLDC motor has a fault, determined by the determiner.

Description

technical field [0001] The present disclosure relates to an apparatus and method for detecting overload of a brushless direct current (BLDC) motor for judging whether the BLDC motor is stalled using a sector value obtained from three-phase current values ​​of the BLDC motor . Background technique [0002] A brushless direct current (BLDC) motor is produced by removing a brush serving as a commutator from a DC motor while maintaining characteristics of a general direct current (DC) motor. A BLDC motor is configured to include a stator including three-phase coils (U-phase coils, V-phase coils, and W-phase coils), and a rotor including permanent magnets. [0003] The BLDC motor is configured such that a current flows in each phase of a coil on a stator side of the three-phase BLDC motor, and a magnetic field is generated in the coil by the current to rotate a rotor. In this case, the BLDC motor detects the magnetic field strength of the rotor, and sequentially turns on and of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/024H02P6/00
CPCH02P6/00H02P29/024H02P21/14H02P21/18G01R19/255G01R31/343H02H7/085H02P21/141H02P27/12H02P21/22
Inventor 朴忠燮
Owner HYUNDAI MOTOR CO LTD