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Motor controller and control method thereof, and error detecting apparatus of inverter

A technology for inverters and motors, applied in motor control, motor generator control, AC motor control, etc., can solve problems such as difficult to determine inverter damage

Inactive Publication Date: 2007-02-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the motor rotates with some switching elements turned off, it is difficult to determine whether the inverter is damaged

Method used

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  • Motor controller and control method thereof, and error detecting apparatus of inverter
  • Motor controller and control method thereof, and error detecting apparatus of inverter
  • Motor controller and control method thereof, and error detecting apparatus of inverter

Examples

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no. 1 example

[0031] like figure 1 As shown, the motor controller according to the first embodiment of the present invention includes a power supply 11 , an inverter 12 , a shunt resistor 16 , a display part 14 and a controller 13 . The motor controller according to the first embodiment of the present invention may further include a position detector 15 .

[0032] The power supply 11 may include: a rectification circuit for rectifying AC power such as commercial power using bridge diodes; and a smoothing circuit such as a capacitor for removing ripples in the rectified power.

[0033] The inverter 12 supplies rectified and smoothed DC power from the power source 11 to the motor through switching operations. The inverter 12 may include one switching element or a plurality of switching elements.

[0034] The shunt resistor 16 calculates the amount of current supplied to the motor through the inverter 12 . A shunt resistor 16 may be provided on the line connecting the power source 11 and th...

no. 2 example

[0053] like image 3 As shown, the error detection device 30 of the inverter 20 according to the second embodiment of the present invention includes a voltage detector 31 , a microcomputer 32 and a display part 33 .

[0054] As shown in the figure, the inverter includes a shunt resistor 24 .

[0055] As described in the first embodiment, the inverter 10 may include a plurality of switching elements, and converts DC power into AC power through switching operations of the switching elements to supply power to a load.

[0056] image 3 The control circuit, position detector and motor controlling the inverter 20 are not shown in order to simplify the drawing.

[0057] The error detection device 30 includes terminals provided in the inverter that can be brought into contact with both ends of the shunt resistor. As an example of an embodiment of the invention, the terminals may be provided as two lead lines.

[0058] When the inverter 20 is operating, the voltage detector 31 can...

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Abstract

A motor controller, including: a power supply which supplies DC power; an inverter which converts the DC power into AC power to be supplied to a motor; a shunt resistor which connects the power supply and the inverter; and a controller which supplies a control signal to the inverter to drive the motor and determines an error of the inverter when it is determined that a size of voltage between both ends of the shunt resistor is less than a predetermined first reference value. Thus, a motor controller is provided which detects an error of an inverter more easily and precisely, and a control method thereof and an error detecting apparatus of an inverter.

Description

[0001] This application claims the benefit of Korean Patent Application No. 2005-0075945 filed with the Korean Intellectual Property Office on Aug. 18, 2005, the disclosure of which is incorporated herein by reference. technical field [0002] The present invention relates to a motor controller and a control method thereof, and an inverter error detection device, and more particularly, to a device for notifying an error and error details of an inverter using a voltage between both ends of a shunt resistor A motor controller, and a control method of the motor controller and an inverter error detection device. Background technique [0003] Generally, a motor controller includes: a power source that supplies DC power; an inverter that converts the supplied DC power into AC power through switching operations to supply to the motor; and a controller that controls the switching operations of the inverter. [0004] Here, the inverter is provided as a plurality of switching elements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/00H02M7/42G01R31/40H02H7/122
CPCH02H7/093H02H3/04H02P2205/01H02H7/0833H02P11/06
Inventor 吴光教俞汉周兵冈孝二朴平基徐廷昊裴宪晔金允正
Owner SAMSUNG ELECTRONICS CO LTD