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Interface circuit of motor driving apparatus

A technology of interface circuit and motor drive, applied in the direction of motor generator control, electrical components, motor control, etc., can solve the problems of increasing cost and installation area, cost and volume increase, and achieve the effect of ensuring margin and reducing cost

Pending Publication Date: 2021-10-12
LS ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The digital isolator 300 includes a plurality of optocouplers. In particular, in order to achieve bidirectional insulation between the power supply circuit unit 200 and the MCU 120, it is necessary to use a bidirectional optical coupler with a pair of light emitting units 311, 314 and light receiving units 312, 313 on one side, respectively. coupler 310, so there is an inevitable increase in cost and installation area
[0018] In particular, since it is necessary to provide a terminal of the digital isolator 300 for each additional device section 230 that is not closely related to the drive control of the motor 207, there is a problem that the increase in cost and volume is inevitable.

Method used

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  • Interface circuit of motor driving apparatus
  • Interface circuit of motor driving apparatus
  • Interface circuit of motor driving apparatus

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Embodiment Construction

[0041] In order to fully understand the structure and effects of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms, and various changes may be made. However, the description of this embodiment is intended to provide a complete disclosure of the present invention and fully disclose the scope of the present invention to those having ordinary skill in the art to which the present invention pertains. In the drawings, the size of the constituent elements is exaggerated for convenience of description, and the proportions of the constituent elements may be exaggerated or reduced.

[0042] The terms "first", "second", etc. may be used to describe various constituent elements, but these constituent elements should not be limited to the above terms. The above terms may only be used to...

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Abstract

The present invention relates to an interface circuit of a motor driving apparatus. The interface circuit of the motor driving apparatus comprises a power circuit unit for controlling driving of a motor, and a control panel unit which controls the power circuit unit and provides a user interface, wherein the power circuit unit further comprises a second MCU which controls a relay and an additional device unit and detects an operation state of the additional device unit, and the second MCU can communicate with a first MCU of the control panel unit via a communication line.

Description

technical field [0001] The present invention relates to an interface circuit of a motor drive device, and more specifically, relates to an interface circuit of a motor drive device capable of simplifying the structure and reducing the cost. Background technique [0002] Generally speaking, a motor drive device includes: a power circuit unit (power circuit unit), which provides driving power to the motor; and a control panel, which detects and displays the operating state of the power circuit unit, and controls the power circuit unit to conform to the control input through the user interface. instruction. [0003] As described above, equipment that uses high power and has parts that users directly touch must have insulation measures to ensure the safety of users. [0004] In particular, in UL (Underwriters Laboratories, Underwriters Laboratories) standards, insulation classes are specified for user interfaces and power circuit portions of inverters, and products conforming t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P31/00H02P29/60H05K7/20
CPCH02P29/60H02P3/18H02P25/16H02P27/06H02P31/00H05K7/20909
Inventor 柳炫圭梁千锡田钟煜池民训
Owner LS ELECTRIC CO LTD