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順向式 (Forward) 轉換器 PowerPoint PPT Presentation


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順向式 (Forward) 轉換器. 指導教授:陳信助老師 學生:陳建育 楊孟佳. 元件與規格設計. 求出輸出電壓、最大、最小 L o 電流,與輸出電壓漣波,變壓器一次測之最大電流. 輸出電壓 V O :. 濾波電感電流 IL o :. 元件與規格設計. 輸出電壓漣波 :. 磁化電感電流 :. 變壓器一次測電流 :. SW 耐壓 :. Forward 轉換器. IsSpice 模擬. 1. Vgs 、 V o 、 IL o 2.VLm 、 ILm 3.In 、 Id1 、 Id2 、 Id3 4.Vgs 、 Vds.

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順向式 (Forward) 轉換器

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Forward

順向式(Forward)轉換器

指導教授:陳信助老師

學生:陳建育

楊孟佳


Forward

元件與規格設計

求出輸出電壓、最大、最小Lo電流,與輸出電壓漣波,變壓器一次測之最大電流

輸出電壓VO:

濾波電感電流ILo:


Forward

元件與規格設計

輸出電壓漣波:

磁化電感電流:

變壓器一次測電流:

SW耐壓:


Forward1

Forward轉換器


Isspice

IsSpice 模擬

1.Vgs、Vo、ILo

2.VLm、ILm

3.In、Id1、Id2、Id3

4.Vgs、Vds


Vgs v o il o

Vgs、Vo、ILo模擬波形

主要是看輸出電壓Vo、濾波電感電流ILo(CCM)

因為模擬值是理想值沒有考慮元件損失,所以會有誤差


Isspice1

IsSpice 模擬

1.Vgs、Vo、ILo

2.VLm、ILm

3.In、Id1、Id2、Id3

4.Vgs、Vds


Vl m il m

VLm、ILm模擬波形

DCM

看VLm可以得到伏秒平衡

由VLm跟ILm看出變壓器內部是做DCM(磁通重置)


Isspice2

IsSpice 模擬

1.Vgs、Vo、ILo

2.VLm、ILm

3.In、Id1、Id2、Id3

4.Vgs、Vds


In id1 id2 id3

In、Id1、Id2、Id3模擬波形

變壓器一次測最大電流


Isspice3

IsSpice 模擬

1.Vgs、Vo、ILo

2.VLm、ILm

3.In、Id1、Id2、Id3

4.Vgs、ILm、Vds


Vgs il m vds

Vgs、ILm、Vds模擬波形

未磁通重置

磁通重置

可得知SW耐壓,觀察出變壓器的磁通重置


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