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Method for detecting the rotor position of a bldc motor of a reciprocating-piston compressor, compressor control for performing the method, and refrigeration appliance having said compressor control

A technology of brushed DC motors and household refrigeration appliances, which is applied in the field of refrigeration appliances and can solve problems such as unsuitable static motors

Active Publication Date: 2018-11-09
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not suitable for stationary motors

Method used

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  • Method for detecting the rotor position of a bldc motor of a reciprocating-piston compressor, compressor control for performing the method, and refrigeration appliance having said compressor control
  • Method for detecting the rotor position of a bldc motor of a reciprocating-piston compressor, compressor control for performing the method, and refrigeration appliance having said compressor control
  • Method for detecting the rotor position of a bldc motor of a reciprocating-piston compressor, compressor control for performing the method, and refrigeration appliance having said compressor control

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Embodiment Construction

[0047] In the figures, for the sake of simplicity of presentation, configurations which are independent of each other are realized in the same embodiment. The same reference numbers in different figures designate the same element or an element having the same effect. These configurations show refrigerators with a storage space for refrigerated goods, the invention also includes combinations with other storage spaces (for example for frozen goods).

[0048] figure 1 A domestic refrigeration appliance 1 is shown in perspective, comprising a thermally insulated housing 9 with an inner container 2 which delimits a coolable interior 3 . The coolable interior 3 is provided for storing food products, not shown in detail.

[0049] In the present exemplary embodiment, the domestic refrigeration appliance 1 has a rotatable door leaf 4 which serves to close the coolable interior 3 . In particular, the door leaf 4 is mounted rotatably about a vertically extending axis. like figure 1 ...

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Abstract

The invention relates to a method for detecting the rotor position of a BLDC motor, for example in a domestic refrigeration appliance, having at least two permanently magnetic pole pairs and controlled magnetic pole pairs electrically produced in windings, containing the steps: a. controlled test run (71) for detecting the rotor position; b. association (72) of the rotor position of a characteristic outer load torque with an associated controlled magnetic pole pair. Said steps are performed in order to achieve an association of a mechanical rotor position with an electrical rotor position, which association is already available before a start of operation of the motor for control purposes. For example, the rotor position of the characteristic outer load torque in time interval 34 can be associated with the associated controlled magnetic pole pair on the basis of a characteristic deviation of the phase current values.

Description

technical field [0001] The invention relates to a method for rotor position recognition of a brushless direct current (BLDC) motor of a reciprocating piston compressor, a compressor control for carrying out the method and a refrigeration system with the compressor control Appliances (especially household refrigeration appliances). Background technique [0002] The method for detecting the rotor position relates to applications of brushless direct current motors in which the load is applied unevenly over a mechanical revolution of the motor. A typical application of this type is, inter alia, reciprocating piston compressors for domestic refrigeration appliances. Due to the harsh environmental conditions that exist there, no separate position sensor is used. However, in particular in this field there are numerous sensorless position determination methods which evaluate the voltage induced in the winding with the so-called "Back EMF method". [0003] In a brushless DC motor,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/182
CPCH02P6/182
Inventor T·贝克曼M·克莱因C·施皮格尔A·保尔杜罗
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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