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Method for monitoring a controller and/or motor of a three-phase motor

A three-phase motor, monitoring and control technology, used in motor control, computer control, general control systems, etc.

Active Publication Date: 2016-03-23
BOSCH SIEMENS HAUSGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The loss of a single phase causes the motor to stop and is immediately recognized by the loss of phase current

Method used

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  • Method for monitoring a controller and/or motor of a three-phase motor
  • Method for monitoring a controller and/or motor of a three-phase motor

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Experimental program
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Embodiment Construction

[0021] The invention is based on a three-winding, three-phase permanently excited synchronous motor for a domestic appliance, in particular a dishwasher or a washing machine, wherein the synchronous motor is used, for example, to drive a pump of the domestic appliance acting as a discharge pump and / or a circulation pump.

[0022] figure 1 Three phase windings 100 , 101 and 102 of a three-winding, three-phase permanent magnet excited synchronous machine 108 are shown, wherein the three phase windings 100 - 102 are connected together in a star configuration 103 . Each of the phase windings 100 and 101 is assigned a respective current measuring device 104, 105 which measures a respective phase current ia and ib. The phase currents ia and ib are converted, in particular converted, into component currents iα, iβ by means of the device 106 . The two phase currents ia, ib and / or the two component currents iα, iβ are supplied to a detector circuit 107 which undertakes the monitoring ...

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PUM

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Abstract

The invention relates to a controller for monitoring and controlling a three-phase motor and / or a method for monitoring a motor, especially an asynchronous motor or a synchronous motor, said method comprising at least the following steps: measuring 2 phase currents (ia, ib ); check that one of the 2 measured phase currents (ia, ib) is substantially zero; generate an error signal if at least one of the 2 measured phase currents (ia, ib) is substantially zero ; check that the 2 phase currents measured (ia, ib) are not substantially equal to zero; give the sum of the 2 phase currents measured (ia, ib); and if the 2 phase currents measured (ia, ib ) is substantially equal to zero, an error signal is generated.

Description

technical field [0001] The invention relates to a controller for monitoring and controlling a three-phase electric machine and / or a method for monitoring an electric machine, in particular an asynchronous or synchronous electric machine. Background technique [0002] It is known to use single-phase polarized motors in dishwasher discharge pumps. These motors are designed for discrete operating points and are directly connected to a voltage source. The loss of a single phase causes the motor to stop and is immediately recognizable by the loss of phase current. Contents of the invention [0003] It is an object of the invention to provide a method which enables checking the function of a controller for controlling an electric motor and / or, in particular, a motor of a domestic appliance. In particular, electric machines are to be used which have more versatile properties than the polarized electric machines described above. [0004] According to the invention, the above ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/16G01R29/18G01R31/02G01R31/08G05B19/4063G05B23/02H02H3/027H02H3/16
CPCG01R31/343G01R31/42H02H7/0805H02P29/0241
Inventor F·阿贝尔R·霍赫豪森
Owner BOSCH SIEMENS HAUSGERATE GMBH