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Squirrel-cage asynchronous motor and fault-detection method therefor

Patent
EP-2113780-B1
Inventor

PEDRAYES GONZALEZ FRANCISCO (ES)

RUIZ GONZALEZ MIRIAM (ES)

FERNANDEZ CABANAS MANES (ES)

GARCIA MELERO MANUEL (ES)

ROJAS GARCIA CARLOS (ES)

Assignee
TSK ELECTRONICA Y ELECTRICIDAD S A (ES)
Country
European Patent Office
Dates
  • Priority:
    2004/10/26
  • Grant:
    2011/01/05
Description
This web page summarizes information in PubChem about patent EP-2113780-B1. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.

1 Abstract

The invention relates to a method for detecting damage caused to the bars and/or end rings of the rotor cage of squirrel-cage asynchronous motors, regardless of the type of load that they are working with, it being possible to detect this type of faults even when the motor is working with loads whose opposing torque has an oscillating or pulsating component. Broken bars cause a significant alteration in the length covered by each pole over the machine's air gap, and this alteration is the parameter that is taken as an indicator for detecting the fault. These variations in the length of the magnetic poles are detected by measuring the flux concatenated by one of the stator teeth (4), thanks to an auxiliary coil (5) disposed on said stator tooth (4). The invention also relates to a squirrel-cage asynchronous motor that includes an auxiliary coil (5) for detecting damage caused to the bars and/or end rings of the rotor cage under any type of load.

2 Full Text

3 Important Dates

3.1 Priority Date

2004/10/26

3.2 Filing Date

2004/10/26

3.3 Publication Date

2011/01/05

3.4 Grant Date

2011/01/05

4 Inventor

PEDRAYES GONZALEZ FRANCISCO (ES)

RUIZ GONZALEZ MIRIAM (ES)

FERNANDEZ CABANAS MANES (ES)

GARCIA MELERO MANUEL (ES)

ROJAS GARCIA CARLOS (ES)

ALONSO ORCAJO GONZALO (ES)

CANO RODRIGUEZ JOSE MANUEL (ES)

5 Assignee

TSK ELECTRONICA Y ELECTRICIDAD S A (ES)

6 Country

European Patent Office

7 Linked Chemicals

7.1 PubChem Compounds

7.2 PubChem Substances

8 Patent Family

9 Classification

9.1 IPC

G01R31/06 (inventive)

H02K15/02 (inventive)

G01R31/34 (inventive, first)

9.2 CPC

H02K7/16

G01R31/343 (inventive)

H02K11/225 (inventive)

H02K15/00 (inventive, first)

G01R31/34

10 Cited By

11 Similar Patents

12 Information Sources

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