Microsoft PowerPoint - TOHO Dust core and material.ppt

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戊勋向
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1 Soft magnetic materials of TOHO ZINC *Dust core? *Use dust core efficiently Toho Technical Center TOHO ZINC CO., LTD.

2 Typical soft magnetic materials

3 Comparison of dust core and ferrite Ferrite HK: Sendust HKB: Sendust Hi B HM: Amorphous dust MK: MPP dust HF: Hi flux dust SK: Pure iron dust HK HKB HM MK HF SK

4 Frequency chracteristic Electrical steel core Pure iron dust Amorphous dust Sendust Ferrite

5 DC Bias characteristic of dust core and Ferrite core B

6 Temperature characteristic (1) Change rate of permeability (%) HK Ni-Zn(850) Mn-Zn(5000) -60 Temperature (deg.c.)

7 Temperature characteristic (2) 8 6 Change rate of permeability (%) HKB HK MPP(125) HF(125) SK HM -8 - Temperature (deg.c.)

8 Example of a core loss calculation Vin Vout VL ) 16.7( ) / 12.2( ( ) 29.1( ) ( ) (25 ) (, 1.37, ), 50 ( 50Turns core, HK12S : 2, 0, 5, 25 : mw Pfe cc mw P f B C f B C P mt T B N Ae Ton Vout Vin B Then cc Ve cm Ae Turns N Winding S Ton khz f V Vout V Vin Conditions b a b a VL Vin-Vout -Vou t Ton Tof f

9 Approximate formula and parameter for a core loss calculation P[mW/cc]= C B [mt] a F [khz] b Materials a b C SK E-04 HK E-05 HKL E-05 HKS E-05 HKH E-05 HKBL E-04 HKBS E-05 HKBH E-04 HM E-05 MPP(60) E-05 MPP(90) E-05 MPP(120) E-05 HF(60) E-04 HF(125) E-05

10 Example of an inductance calculation under DC Bias A DC at H H L Le e Ae N L e m AT f e d c b a e m AT H Le N I H Then DCBias Winding 5 ) 65.2( ) ( ) / ( x : x x x x x ) / 50( , DC5A : 0.275cm 4.99cm, Ae Le 50 Turns HK12S core, :

11 Approximate formula and parameter for an inductance calculation under DC Bias e = a x 5 + b x 4 + c x 3 + d x 2 + e x + f x[at/m] Materials a b c d e f SK 4.620E E E E HK 3.143E E E E HKL 1.552E E E E HKS 3.380E E E E HKH 3.055E E E E HKBL 9.266E E E E HKBS 2.405E E E E HKBH 2.728E E E E HM 3.353E E E E MPP(60) 1.293E E E E MPP(90) 1.696E E E E MPP(120) 6.825E E E E HF(60) E E E E HF(125) 3.922E E E E

12 Wave form simulation from approximate formula of DC Bias Waveform Minor loop Major loop VL (V) Time (us) Hystrisis curve IL (A) B (mt) H (AT/m)

13 Core parameter table (1) Volume cc AL value nh O.D. mm I.D. mm Ht mm D D D D S S S S S S S Le cm Ae cm 2 Size Toroidal core O.D. I.D. Ht HK core

14 Core parameter table (2) G mm E mm F mm C mm D mm B mm A mm Volume cc AL value nh EER EERL EERL EER EE EE EE EE EE Le cm Ae cm 2 Size EE, EERL core HK core

15 Standard power capacity to core size (1)

16 Standard power capacity to core size (2)

17 Standard power capacity to core size (3)

18 Temperature characteristic of core loss (1)

19 Temperature characteristic of core loss (2)

20 Winding tuning for loss reduction (1)

21 Winding tuning for loss reduction (2)

22 Core,LossLoss

中華民國第51屆中小學科學展覽會

中華民國第51屆中小學科學展覽會中華民國第 51 屆中小學科學展覽會作品說明書國小組物理科第三名 080115 問水哪得高如許? 為有熱源伴水來學校名稱 : 桃園縣龍潭鄉三坑國民小學作者 : 指導老師 : 小六陳嬿云黃啟晉小六張婉怡關鍵詞 : 熱脹冷縮模擬燃燒影響力