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       您現在的位置是>>首頁>>資訊中心>>美國能效六級與歐盟能效六級對比差異說明

    美國能效六級與歐盟能效六級對比差異說明


    行業:電源適配器生產廠家  刷新日期:2021年06月02日  發布日期:2012年04月14日  本站網址:www.myexsshit.com


       美國能效六級與歐盟能效六級對比差異說明 歐盟CoC V5六級能效與美國DoE VI能源之星六級Energy Star VI能效雖然都是六級能效但是還是有很多的標準各自不同.下面我們來對比一下.

     

       首先我們來看看原文的美國DoE VI能源之星六級Energy Star VI能效相關要求和標準:


    External Power Supplies

       External power supplies (EPS) convert household electric current into direct current or lower-voltage alternating current to operate a consumer product such as a laptop computer or smart phone. There are hundreds of product types that use an EPS and over 300 million EPSs are shipped each year. Energy conservation standards have been in place for external power supplies since 2007.

    The standards implemented in 2007 will save approximately 3.8 quads of energy and result in approximately $42.4 billion in energy bill savings for products shipped from 2008-2032. The standard will avoid about 198.5 million metric tons of carbon dioxide emissions, equivalent to the annual greenhouse s emissions of about 39 million automobiles.


       The standards implemented in 2014 will save consumers up to an additional $3.8 billion and cut emissions by nearly another 47 million metric tons of carbon dioxide over 30 years, equivalent to the annual electricity use of 6.5 million homes.


    Standards for External Power Supplies


       The following content summarizes the energy conservation standards for external power supplies. The text is not an official reproduction of the Code of Federal Regulations and should not be used for lel research or citation.


    Current Standard


    Direct Operation EPS Standards


       The new efficiency standards for EPSs established efficiency standards for Direct Operation External Power Supplies. All direct operation external power supplies manufactured on or after two years after the final rule’s date of publication in the Federal Register shall meet the following standards:



    Single-Voltage External AC-DC Power Supply, Basic-Voltage

    Nameplate Output Power (Pout)

    Minimum Average Efficiency in Active Mode 
    (expressed as a decimal)

    Maximum Power in No-Load Mode [W]

    Pout ≤ 1 W

    ≥0.5 × Pout + 0.16

    ≤0.100

    1 W < Pout ≤ 49 W

    ≥0.071 × ln(Pout) - 0.0014 × Pout + 0.67

    ≤0.100

    49 W < Pout ≤ 250 W

    ≥0.880

    ≤0.210

    Pout > 250 W

    ≥0.875

    ≤0.500

    Single-Voltage External AC-DC Power Supply, Low-Voltage

    Nameplate Output Power (Pout)

    Minimum Average Efficiency in Active Mode 
    (expressed as a decimal)

    Maximum Power in No-Load Mode [W]

    Pout≤1 W

    ≥0.517 × Pout + 0.087

    ≤0.100

    1 W < Pout≤49 W

    ≥0.0834 × ln(Pout) - 0.0014 × Pout + 0.609

    ≤0.100

    49 W < Pout≤250 W

    ≥0.870

    ≤0.210

    Pout > 250 W

    ≥0.875

    ≤0.500

    Single-Voltage External AC-AC Power Supply, Basic-Voltage

    Nameplate Output Power (Pout)

    Minimum Average Efficiency in Active Mode 
    (expressed as a decimal)

    Maximum Power in No-Load Mode [W]

    Pout ≤ 1 W

    ≥0.5 × Pout + 0.16

     0.210

    1 W < Pout  49 W

    ≥0.071 × ln(Pout) - 0.0014 × Pout + 0.67

     0.210

    49 W < Pout  250 W

    ≥0.880

     0.210

    Pout > 250 W

    ≥0.875

     0.500

       下面我們在看看歐盟CoC V5六級能效標準與要求的原文節選

    AIM
       To minimise energy consumption of external power supplies both under no-load and load conditions in the output power range 0.3W to 250W.

    COMMITMENT


    Signatories of this Code of Conduct commit themselves to:


       Design power supplies or component so as to minimise energy consumption of external power supplies. Those companies who are not responsible for the production of power supplies shall include the concept of minimisation of energy consumption in their purchasing procedures of power supplies.

       Achieve both the no-load power consumption and on-mode efficiency targets shown in Table 1.1, Table 2.1 and 2.2 for at least 90% of products2, for the new models of external power supplies that are introduced on the market or specified in a tender/procurement after the effective date (for new participants after the date they have signed the Code of conduct).

    Table 1.1: No-load Power Consumption

    Rated Output Power (Pno)
    No-load power consumption
    Tier 1
    Tier 2
    ≥ 0.3 W and < 49 W
    0.150 W
    0.075 W
    ≥ 49 W and < 250 W
    0.250 W
    0.150 W
    Mobile handheld battery driven
    and < 8 W
    0.075 W
    0.075 W

     

     

    Table 2.1: Energy-Efficiency Criteria for Active Mode (excluding Low Voltage external power supplies)

    Rated Output
    Power (Pno)
    Minimum Four Point Average Efficiency inActive Mode
    Minimum Efficiency in Active Mode at 10 %
    load of full rated output current
    Tier 1
    Tier 2
    Tier 1
    Tier 2
    0.3 ≤ W ≤ 1
    ≥ 0.500 * Pno + 0.146
    ≥ 0.500 * Pno + 0.169
    ≥ 0.500 * Pno + 0.046
    ≥ 0.500 * Pno + 0.060
    1 ≤ W ≤ 49
    ≥ 0.0626*ln(Pno) + 0.646
    ≥ 0.071*ln(Pno)
    – 0.00115 * Pno + 0.670
    ≥ 0.0626*ln(Pno) + 0.546
    ≥ 0.071*ln(Pno)
    – 0.00115 * Pno + 0.570
    49 ≤ W ≤ 250
    ≥ 0.890
    ≥ 0.890
    ≥ 0.790
    ≥ 0.790

     

    “ln” refers to the natural lorithm. Efficiencies to be expressed in decimal form: an efficiency of 0.88 in decimal


    form corresponds to the more familiar value of 88% when expressed as a percentage.

     

    Table 2.2: Energy-Efficiency Criteria for Active Mode for Low Voltage external power supplies

    Rated Output
    Power (Pno)
    Minimum Four Point Average Efficiency inActive Mode
    Minimum Efficiency in Active Mode at 10 %
    load of full rated output current
    Tier 1
    Tier 2
    Tier 1
    Tier 2
    0.3 ≤ W ≤ 1
    ≥ 0.500 * Pno + 0.086
    ≥ 0.517 * Pno + 0.091
    ≥ 0.500 * Pno
    ≥ 0.517 * Pno
    1 ≤ W ≤ 49
    ≥ 0.0755*ln(Pno) + 0.586
    ≥ 0.0834*ln(Pno)
    – 0.0011 * Pno + 0.609
    ≥ 0.072*ln(Pno) + 0.500
    ≥ 0.0834*ln(Pno)
    – 0.00127 * Pno + 0.518
    49 ≤ W ≤ 250
    ≥ 0.880
    ≥ 0.880
    ≥ 0.780
    ≥ 0.780

     

    “ln” refers to the natural lorithm. Efficiencies to be expressed in decimal form: an efficiency of 0.88 in decimal
    form corresponds to the more familiar value of 88% when expressed as a percentage.

     

    The no-load power consumption and the energy efficiency shall be measured and declared
    according to the method in the Annex.

    Effective dates:
    Tier 1: 1 January 2014
    Tier 2: 1 January 2016

       根據以上美國能源部和歐盟公布的能效測試要求,很明顯看出,美國的能效要求更嚴格,

       下面用12V1.5A 電源適配器舉例說明:

      1. 按照 DOE 要求: 12V1.5A 電源適配器,輸出功率為18W, 平均效率要求為: Average Efficiency = 0.071*In(18)-0.0014*18+0.67= 85.0016% No Load Input Power < 0.1W

      2. 按照 CoC V5 的要求: 12V1.5A 電源適配器,輸出功率為18W, 平均效率要求為: Average Efficiency = 0.0626*In(18)+0.646= 82.693% No Load Input Power < 0.15 W

       根據以上對比結果,美國能效要求相比較歐洲能效法規來講,要高出近2.4%.


    上一篇:美規插墻式電源適配器AC插腳美規UL插腳安規尺寸

    本 篇:美國能效六級與歐盟能效六級對比差異說明

    下一篇:開關電源適配器設計要求以及指標

     

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