PL402223A1 - Method and system for measuring the choke's own and mutual thermal resistance - Google Patents
Method and system for measuring the choke's own and mutual thermal resistanceInfo
- Publication number
- PL402223A1 PL402223A1 PL402223A PL40222312A PL402223A1 PL 402223 A1 PL402223 A1 PL 402223A1 PL 402223 A PL402223 A PL 402223A PL 40222312 A PL40222312 A PL 40222312A PL 402223 A1 PL402223 A1 PL 402223A1
- Authority
- PL
- Poland
- Prior art keywords
- choke
- winding
- thermal resistance
- core
- measuring
- Prior art date
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
Przedmiotem wynalazku jest sposób i układ do pomiaru własnej i wzajemnej rezystancji termicznej dławika, mający zastosowanie przy kontroli jakości elementów indukcyjnych dla przemysłu elektronicznego. Sposób pomiaru rezystancji termicznej uzwojenia dławika i wzajemnej rezystancji termicznej między rdzeniem a uzwojeniem, wykorzystujący w charakterze parametru termoczułego rezystancję uzwojenia, realizowany jest w trzech etapach obejmujących kolejno pomiary i obliczenia z wzorów analitycznych. Sposób charakteryzuje się tym, że w pierwszym etapie pomiaru mierzona jest rezystancja uzwojenia R1 przy małej wartości prądu dławika I1, niepowodującej wzrostu temperatury uzwojeń, oraz temperatura Ta rdzenia przy wykorzystaniu pirometru, w drugim etapie mierzona jest, w stanie termicznie ustalonym, rezystancja R2 uzwojenia oraz temperatura Tr rdzenia dławika za pomocą pirometru przy dużej wartości prądu dławika I2 w etapie trzecim wartości rezystancji termicznej uzwojenia Rthu oraz wzajemnej rezystancji termicznej między rdzeniem a uzwojeniem Rthur wyliczane są ze wzorów: (A). Układ do pomiaru rezystancji termicznej uzwojenia dławika i wzajemnej rezystancji termicznej między rdzeniem a uzwojeniem zawiera badany dławik, woltomierz, amperomierz, zasilacz prądowy oraz pirometr. Układ charakteryzuje się tym, że zasilacz prądowy (1) jest szeregowo połączony z amperomierzem (2) oraz dwójnikiem stanowiącym równoległe połączenie woltomierza (3) oraz dławika (4), przy czym dławik wyposażony jest w styki Kelvina, a promieniowanie podczerwone emitowane przez rdzeń dławika jest poddawane detekcji przez pirometr (5).The subject of the invention is a method and system for measuring the intrinsic and reciprocal thermal resistance of a choke, applicable in the quality control of induction components for the electronics industry. The method of measuring the thermal resistance of the choke winding and the mutual thermal resistance between the core and the winding, using the winding resistance as a thermosensitive parameter, is carried out in three stages comprising successively measurements and calculations from analytical formulas. The method is characterized by the fact that in the first stage of measurement, the winding resistance R1 is measured at a small value of the choke current I1, which does not cause the winding temperature to rise, and the core temperature Ta using a pyrometer, in the second stage the resistance of the winding R2 and The choke core temperature Tr using a pyrometer at a high choke current I2 in the third stage of the thermal resistance value of the Rthu winding and the mutual thermal resistance between the core and the Rthur winding are calculated from the formulas: (A). The system for measuring the thermal resistance of the choke winding and mutual thermal resistance between the core and the winding contains the tested choke, voltmeter, ammeter, power supply and pyrometer. The system is characterized by the fact that the power supply (1) is connected in series with the ammeter (2) and the binary connector being a parallel connection of the voltmeter (3) and the choke (4), the choke is equipped with Kelvin contacts, and the infrared radiation emitted by the choke core is detected by a pyrometer (5).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL402223A PL225429B1 (en) | 2012-12-24 | 2012-12-24 | Method and system for measuring self-and mutual- thermal resistance of a choke |
| PL13460073T PL2746790T3 (en) | 2012-12-24 | 2013-11-13 | Method and circuit for measuring own and mutual thermal resistances of a magnetic device |
| EP13460073.3A EP2746790B1 (en) | 2012-12-24 | 2013-11-13 | Method and circuit for measuring own and mutual thermal resistances of a magnetic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL402223A PL225429B1 (en) | 2012-12-24 | 2012-12-24 | Method and system for measuring self-and mutual- thermal resistance of a choke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL402223A1 true PL402223A1 (en) | 2014-07-07 |
| PL225429B1 PL225429B1 (en) | 2017-04-28 |
Family
ID=51063046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL402223A PL225429B1 (en) | 2012-12-24 | 2012-12-24 | Method and system for measuring self-and mutual- thermal resistance of a choke |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL225429B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020202224A1 (en) * | 2020-02-20 | 2021-08-26 | Aktiebolaget Skf | Device for measuring two physical quantities |
-
2012
- 2012-12-24 PL PL402223A patent/PL225429B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL225429B1 (en) | 2017-04-28 |
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