CN110133548A - A kind of two close cycles magnetic loss measuring system - Google Patents
A kind of two close cycles magnetic loss measuring system Download PDFInfo
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- CN110133548A CN110133548A CN201910488992.XA CN201910488992A CN110133548A CN 110133548 A CN110133548 A CN 110133548A CN 201910488992 A CN201910488992 A CN 201910488992A CN 110133548 A CN110133548 A CN 110133548A
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- labview
- sinusoidal signal
- signal generator
- master system
- power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The present invention provides a kind of two close cycles magnetic loss measuring system, including sinusoidal signal generator, LabVIEW master system, power amplifier and power analyzer, the LabVIEW master system and sinusoidal signal generator, constitute a closed-loop system, guarantee the frequency of output signal and the precision of amplitude, sinusoidal signal generator, LabVIEW master system, power amplifier and power analyzer are integrally formed another closed-loop system, master system real-time monitoring magnetic core secondary side voltage to be measured, it is ensured that the accurate reliability of test result.The gain factor of sinusoidal signal generator signal is improved using power amplifier, and it will be in this signal loading to tested magnetic core, primary side current and secondary side voltage constant power information are acquired by power analyzer and transfers back to LabVIEW master system, and processing data obtain core loss.
Description
Technical field
The present invention relates to switch converters field more particularly to a kind of two close cycles magnetic loss measuring systems.
Background technique
Core of the switch converters as electric/electronic device power supply system, can reliability service be directly related to entirely
The reliability of system.For switching converter operation in HF switch state, switching loss, magnetic element power loss are all very big.
Magnetic element is one of most important device in switch converters, and effective measurement to core loss can be magnetic element heat dissipation side
Case design provides foundation.Data support can not only be provided to theoretical calculation model by accurately testing obtained core loss data,
The mentality of designing that engineer can also be widened makes engineering design more standard.As switch converters continue to miniaturization and height
The continuous development of frequencyization, the requirement to core loss data become increasingly harsher.Therefore, the optimization of switch change device is set
Meter, high-precision core loss data have and its important meaning, construct a kind of efficiently accurate core loss measuring table
It is particularly significant.
Summary of the invention
To solve the above problems, utilizing power amplifier it is an object of the invention to provide a kind of two close cycles magnetic loss measuring system
Improve the gain factor of sinusoidal signal generator signal, and by this signal loading to tested magnetic core, by power analyzer come
Acquisition primary side current and secondary side voltage constant power information simultaneously transfer back to LabVIEW master system, and processing data obtain magnetic
Core loss.Wherein LabVIEW master system and sinusoidal signal generator constitute a closed-loop system, guarantee the frequency of output signal
The precision of rate and amplitude.Whole system constitutes another closed-loop system, master system real-time monitoring magnetic core secondary side electricity to be measured
Pressure, it is ensured that the accurate reliability of test result.
The present invention provides a kind of two close cycles magnetic loss measuring system, including sinusoidal signal generator, LabVIEW host computer system
System, power amplifier and power analyzer, the LabVIEW master system and sinusoidal signal generator, constitute a closed loop
System guarantees the frequency of output signal and the precision of amplitude, sinusoidal signal generator, LabVIEW master system, power amplification
Device and power analyzer are integrally formed another closed-loop system, master system real-time monitoring magnetic core secondary side voltage to be measured, really
Protect the accurate reliability of test result.
Further improvement lies in that: the secondary side voltage U2 of magnetic core to be measured are as follows:
Wherein: f is frequency, and Bp is magnetic induction peak value, and Ae is the core cross section product of core material, and N2 is second siding ring the number of turns.
Further improvement lies in that: LabVIEW master system acquires the magnetic core power information of power analyzer measurement, monitoring
Second siding ring voltage measured value and theoretical value, real-time revise signal source forcing output amplitude.
Further improvement lies in that: the frequency and amplitude of signal, sine letter are set in LabVIEW host computer operation interface
Number generator generates corresponding sinusoidal signal after being instructed, the frequency amplitude information of LabVIEW host computer real-time monitoring signal,
Basic guarantee is provided for entire magnetic loss measuring system.
Beneficial effects of the present invention: the gain factor of sinusoidal signal generator signal is improved using power amplifier, and will
In this signal loading to tested magnetic core, primary side current and secondary side voltage constant power information are acquired by power analyzer simultaneously
LabVIEW master system is transferred back to, processing data obtain core loss.Wherein LabVIEW master system and sinusoidal signal
Generator constitutes a closed-loop system, guarantees the frequency of output signal and the precision of amplitude.Whole system constitutes another closed loop
System, master system real-time monitoring magnetic core secondary side voltage to be measured, it is ensured that the accurate reliability of test result.
Detailed description of the invention
Fig. 1 is two close cycles core loss measuring system schematic diagram of the invention.
Fig. 2 is sine signal source generating system schematic diagram of the invention.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, the embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention..
As shown in Figs. 1-2, the present embodiment provides a kind of two close cycles magnetic loss measuring system, including sinusoidal signal generator,
LabVIEW master system, power amplifier and power analyzer, the LabVIEW master system and sinusoidal signal occur
Device constitutes a closed-loop system, guarantees the frequency of output signal and the precision of amplitude, and sinusoidal signal generator, LabVIEW are upper
Machine system, power amplifier and power analyzer are integrally formed another closed-loop system, master system real-time monitoring magnetic to be measured
Core secondary side voltage, it is ensured that the accurate reliability of test result.
The secondary side voltage U2 of magnetic core to be measured are as follows:
Wherein: f is frequency, and Bp is magnetic induction peak value, and Ae is the core cross section product of core material, and N2 is second siding ring the number of turns.
LabVIEW master system acquires the magnetic core power information of power analyzer measurement, monitors second siding ring voltage
Measured value and theoretical value, real-time revise signal source forcing output amplitude.
The frequency and amplitude of signal are set in LabVIEW host computer operation interface, sinusoidal signal generator is referred to
Corresponding sinusoidal signal is generated after order, the frequency amplitude information of LabVIEW host computer real-time monitoring signal measures for entire magnetic loss
System provides basic guarantee.The gain factor of sinusoidal signal generator signal is improved using power amplifier, and this signal is added
It is downloaded on tested magnetic core, primary side current and secondary side voltage constant power information are acquired by power analyzer and transfers back to
LabVIEW master system, processing data obtain core loss.Wherein LabVIEW master system and sinusoidal signal generator
A closed-loop system is constituted, guarantees the frequency of output signal and the precision of amplitude.Whole system constitutes another closed-loop system, on
Position machine system real-time monitoring magnetic core secondary side voltage to be measured, it is ensured that the accurate reliability of test result.
Claims (4)
1. a kind of two close cycles magnetic loss measuring system, it is characterised in that: including sinusoidal signal generator, LabVIEW master system,
Power amplifier and power analyzer, the LabVIEW master system and sinusoidal signal generator, constitute a closed loop system
System, guarantees the frequency of output signal and the precision of amplitude, sinusoidal signal generator, LabVIEW master system, power amplifier
Another closed-loop system, master system real-time monitoring magnetic core secondary side voltage to be measured are integrally formed with power analyzer, it is ensured that
The accurate reliability of test result.
2. a kind of two close cycles magnetic loss measuring system as described in claim 1, it is characterised in that: the secondary side voltage of magnetic core to be measured
U2 are as follows:
Wherein: f is frequency, and Bp is magnetic induction peak value, and Ae is the core cross section product of core material, and N2 is second siding ring the number of turns.
3. a kind of two close cycles magnetic loss measuring system as described in claim 1, it is characterised in that: LabVIEW master system is adopted
Collect the magnetic core power information of power analyzer measurement, monitors second siding ring voltage measured value and theoretical value, real-time revise signal
Source forcing output amplitude.
4. a kind of two close cycles magnetic loss measuring system as described in claim 1, it is characterised in that: operated in LabVIEW host computer
The frequency and amplitude of signal are set on interface, sinusoidal signal generator generates corresponding sinusoidal signal after being instructed,
The frequency amplitude information of LabVIEW host computer real-time monitoring signal provides basic guarantee for entire magnetic loss measuring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488992.XA CN110133548A (en) | 2019-06-06 | 2019-06-06 | A kind of two close cycles magnetic loss measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488992.XA CN110133548A (en) | 2019-06-06 | 2019-06-06 | A kind of two close cycles magnetic loss measuring system |
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| CN110133548A true CN110133548A (en) | 2019-08-16 |
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| CN201910488992.XA Pending CN110133548A (en) | 2019-06-06 | 2019-06-06 | A kind of two close cycles magnetic loss measuring system |
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Citations (6)
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|---|---|---|---|---|
| CN1283797A (en) * | 2000-09-18 | 2001-02-14 | 东南大学 | Method and device for measuring magnetic hysteresis loop |
| CN1456900A (en) * | 2002-05-08 | 2003-11-19 | 三星电机株式会社 | Ferrite-magnetic core magnetic inductivity testing system utilizing magnetic field actinobolia |
| CN101673351A (en) * | 2008-09-11 | 2010-03-17 | 北京同方微电子有限公司 | Pseudo-random number generating circuit and generating method of radio frequency identification tag chip |
| CN101866155A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Variable frequency square-wave generator |
| CN103792445A (en) * | 2014-01-16 | 2014-05-14 | 厦门立林电气控制技术有限公司 | Fully intelligent electric power overcurrent protection tester |
| CN105119587A (en) * | 2015-08-28 | 2015-12-02 | 南京邮电大学 | Magnetic loss automatic test platform and sinusoidal excitation signal source used by same |
-
2019
- 2019-06-06 CN CN201910488992.XA patent/CN110133548A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283797A (en) * | 2000-09-18 | 2001-02-14 | 东南大学 | Method and device for measuring magnetic hysteresis loop |
| CN1456900A (en) * | 2002-05-08 | 2003-11-19 | 三星电机株式会社 | Ferrite-magnetic core magnetic inductivity testing system utilizing magnetic field actinobolia |
| CN101673351A (en) * | 2008-09-11 | 2010-03-17 | 北京同方微电子有限公司 | Pseudo-random number generating circuit and generating method of radio frequency identification tag chip |
| CN101866155A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Variable frequency square-wave generator |
| CN103792445A (en) * | 2014-01-16 | 2014-05-14 | 厦门立林电气控制技术有限公司 | Fully intelligent electric power overcurrent protection tester |
| CN105119587A (en) * | 2015-08-28 | 2015-12-02 | 南京邮电大学 | Magnetic loss automatic test platform and sinusoidal excitation signal source used by same |
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| 周岩等: "基于 LabVIEW 构建"电力电子技术"实践教学平台", 《电气电子教学学报》 * |
| 周岩等: "高频磁损测试平台正弦激励源设计", 《磁性材料及器件》 * |
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Application publication date: 20190816 |
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| RJ01 | Rejection of invention patent application after publication |