IEC 63300:2023

Test methods for electrical and magnetic properties of magnetic powder cores

IEC 63300:2023 provides the test methods for the electrical and magnetic properties of magnetic powder cores used for inductive components in electronics equipment, switch-mode power supplies and power conversion equipment, and introduces measuring principles, scope of application and matters of importance for each method.
The parameters used to characterize the magnetic powder cores include: inductance factor, effective permeability, complex relative permeability, temperature coefficient of permeability, frequency coefficient of permeability, DC bias characteristic, power loss, and quality factor. This document is the basis for determining the characteristic parameters of magnetic powder cores.

Méthodes d'essai des propriétés électriques et magnétiques des noyaux en poudre magnétique

L'IEC 63300:2023 fournit les méthodes d'essai des propriétés électriques et magnétiques des noyaux en poudre magnétique utilisés pour les composants inductifs des équipements électroniques, des alimentations à découpage et des équipements de conversion de puissance. Il décrit les principes de mesure, le domaine d'application et les points d'importance pour chaque méthode.
Les paramètres utilisés pour caractériser les noyaux en poudre magnétique comprennent: le facteur d'inductance, la perméabilité effective, la perméabilité relative complexe, le coefficient de température de perméabilité, le coefficient de fréquence de perméabilité, la caractéristique de polarisation en courant continu, les pertes de puissance et le facteur de qualité. Le présent document sert de base pour la détermination des paramètres caractéristiques des noyaux en poudre magnétique.

General Information

• Status: Published
• Publication Date: 26-Jun-2023
• ICS: 29.030 - Magnetic materials
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Drafting Committee: WG 1 - TC 51/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 25-Jul-2023
• Completion Date: 27-Jun-2023

Standards Content (Sample)

IEC 63300
®

Edition 1.0 2023-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Test methods for electrical and magnetic properties of magnetic powder cores

Méthodes d'essai des propriétés électriques et magnétiques des noyaux en
poudre magnétique

IEC 63300:2023-06(en-fr)

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IEC 63300

®


Edition 1.0 2023-06




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Test methods for electrical and magnetic properties of magnetic powder cores



Méthodes d'essai des propriétés électriques et magnétiques des noyaux en

poudre magnétique

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE





ICS 29.030, 29.100.10 ISBN 978-2-8322-7139-1




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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 63300:2023 © IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviated terms and symbols . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 9
3.3 Symbols . 10
4 Instruments and equipment. 10
4.1 General provisions . 10
4.2 Excitation source . 10
4.2.1 General provisions . 10
4.2.2 Sinusoidal wave excitation source . 11
4.2.3 Square wave excitation source . 11
4.2.4 Calculation of magnetic flux density . 12
4.3 Measuring equipment . 12
4.3.1 General provisions . 12
4.3.2 Voltmeter . 12
4.3.3 Data acquisition unit . 13
4.4 Sensor . 13
4.4.1 Sampling resistor . 13
4.4.2 Current transformer . 13
4.5 Other descriptions . 14
4.5.1 Intermediate connector . 14
4.5.2 Thermostat . 14
5 Sample . 14
5.1 Magnetic core . 14
5.2 Winding . 14
5.2.1 Winding conditions . 14
5.2.2 Dual winding . 15
5.2.3 Single winding . 15
5.3 Mounting of sample . 16
5.4 Parameters of sample . 16
6 Measuring conditions . 16
6.1 Relation to practice . 16
6.2 Effective parameters . 17
6.3 Magnetic state of measurement . 17
7 Test methods for power loss . 17
7.1 Summary . 17
7.2 AC power method . 18
7.3 DC power method . 18
7.4 Calorimetric method . 18
8 Test methods for effective permeability. 18
8.1 Summary . 18
8.2 Large signal AC method . 19
8.3 Impedance method . 19

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IEC 63300:2023 © IEC 2023 – 3 –
8.4 Pulse method . 19
9 Test method for effective complex permeability . 19
10 Test method for quality factor (Q) . 20
11 Verification of measurement accuracy . 20
Annex A (informative) AC power method . 21
A.1 Overview. 21
A.2 Basic circuit diagram . 21
A.3 Measuring device . 22
A.3.1 High frequency excitation source . 22
A.3.2 Exciting winding N and voltage sensing winding N . 22
1 2
A.3.3 Sensing resistor R . 22
A.3.4 Data collector . 22
A.4 Test steps . 22
A.5 Measuring principle . 22
A.6 Error analysis. 23
A.7 Matters to consider . 24
A.7.1 Measurement error . 24
A.7.2 Deduction of the winding loss . 24
A.8 Specific test methods . 24
A.8.1 B-H analyzer method . 24
A.8.2 Power analyzer method . 24
A.8.3 Capacitive reactive compensation method . 24
A.9 Measurement for quality factor (Q) . 26
Annex B (informative) DC power method. 27
B.1 Overview. 27
B.2 Basic circuit diagram . 27
B.3 Measuring device . 27
B.3.1 DC voltage source U . 27
i
B.3.2 DC/AC inverter . 27
B.3.3 Exciting winding N . 27
1
B.3.4 DC ammeter and DC voltmeter for measuring the average value . 28
B.4 Test steps . 28
B.5 Measuring principle . 28
B.6 Matters to consider . 29
B.6.1 Inverter loss. 29
B.6.2 Deduction of winding loss . 29
Annex C (informative) Calorimetric method . 30
C.1 Overview. 30
C.2 Basic circuit diagram . 30
C.3 Measuring device . 30
C.3.1 Excitation source . 30
C.3.2 Temperature sensor . 30
C.3.3 Thermal insulated container . 30
C.3.4 Thermal medium . 31
C.3.5 Sample . 31
C.4 Test steps . 31
C.5 Measuring principle . 31
C.6 Matters to consider . 32

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– 4 – IEC 63300:2023 © IEC 2023
C.7 Specific test methods . 32
C.7.1 Calibration calorimetric method . 32
C.7.2 Comparative calorimetric method . 33
Annex D (informative) Large signal AC method . 35
D.1 Overview. 35
D.2 Basic circuit diagram . 35
D.3 Measuring device . 36
D.3.1 High-frequency excitation source . 36
D.3.2 Exciting winding N and voltage sensing winding N . 36
1 2
D.3.3 Sampling resistor R . 36
D.3.4 Data collector . 36
D.4 Test steps . 36
D.5 Measuring principle . 37
D.6 Matters to consider . 37
Annex E (informative) Impedance method . 38
E.1 Overview. 38
E.2 Basic circuit diagram . 38
E.3 Measuring device . 38
E.3.1 Impedance analyzer or LCR meter . 38
E.3.2 Exciting winding N . 38
1
E.4 Test steps . 39
E.5 Measuring principle . 39
E.6 Matters to consider . 39
Annex F (informative) Pulse method . 40
F.1 Overview. 40
F.2 Basic circuit diagram . 40
F.3 Measuring device . 40
F.3.1 Sampling resistor R . 40
F.3.2 Switch S . 40
F.3.3 Exciting winding N . 41
1
F.3.4 Capacitor C . 41
F.4 Test steps . 41
F.5 Measuring principle . 41
F.6 Matters to consider . 42
Annex G (informative) Method of verification and criteria for judgment . 43
Annex H (informative) Imposing of DC bias on the core . 46
H.1 Overview. 46
H.2 Matters to consider . 48
Annex I (informative) References . 49
I.1 Overview. 49
I.2 Effect of rise time of square wave excitation on the core loss . 49
I.3 Phase error limit . 50
I.4 Derivation of Formula (8) . 51
I.5 SRF consideration of the sample . 52
Bibliography . 54

Figure 1 – Figure of square waveform . 12

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IEC 63300:2023 © IEC 2023 – 5 –
Figure A.1 – Diagram of AC power method . 21
Figure A.2 – Circuit diagram of reactive power compensation of capacitor . 25
Figure A.3 – Phasor diagram of reactive power compensation of capacitor . 26
Figure B.1 – Diagram of DC meter method . 27
Figure C.1 – Diagram of the calorimetric method . 30
Figure C.2 – Diagram of the calibration calorimetric method . 33
Figure C.3 – Diagram of the comparative calorimetric method. 34
Figure D.1 – Diagram of large signal AC method. 35
Figure E.1 – Diagram of impedance method. 38
Figure F.1 – Diagram of pulse method . 40
Figure F.2 – Exciting voltage and current waveform on the exciting winding. 42
Figure G.1 – Diagram of air-core inductor . 44
Figure H.1 – Diagram of imposition of DC bias . 47
Figure I.1 – Square wave excitation source . 50
Figure I.2 – Diagram of the ratio error and phase error . 50
Figure I.3 – Equivalent circuit model of sample . 52

Table 1 – Comparisons of measuring methods for power loss . 17
Table I.1 – Example for k, α, β and other parameters . 50
Table I.2 – Example of core losses error with different t . 50
r
Table I.3 – Example of core losses measuring error and ratio error for the phase error . 51
Table I.4 – Example of ΔL at different frequencies . 53

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

TEST METHODS FOR ELECTRICAL AND MAGNETIC
PROPERTIES OF MAGNETIC POWDER CORES

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IEC 63300 has been prepared by IEC technical committee 51: Magnetic components, ferrite
and magnetic powder materials. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
51/1419/CDV 51/1436/RVC

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