能源之星外部電源EPS(External Power Supplies) 最新 2.0 版, 2008年 11 月開始生效實施

谢谢你的无私奉献!
有两个问题请教DX,
1: 能源之星2.0对待机功耗的规定是在何种电压下测量?(若只测~115V那很容易,若要~230V也满足就有难度).
2: 能源之星2.0只对输入功率>=100W的电源要求功率因数必须>0.9,只在115V 60Hz下测量.230V 50Hz不测.然而照明行业欧洲人要求输入功率>25W的LED电源PF>0.9,还要求偕波必须符合EN61000-3-2 CLASS C,那做LED电源怎么过能源之星2.0??? 难道做个能源之星2.0只卖到美国加拿大?

高功率因数的LED电源待机功耗能做到<0.3W(~230V)真有难度!
就连Philips 2008年10月刚发布的UBA3070也只能达到待机功耗<=0.5W的水平.
当然Philips也有小功率的驱动IC也可满足<=0.3W,可做20W~50W的就难了.
能否帮忙确定一下,能源之星2.0对0~50W待机功耗的测试电压!

谢谢!

現就樓上的問題,簡單回復如下,供參考:

1. 以能源之星規定, 產品規格只使用在 115 V, 則只測 115V輸入, 若115V/230V兩者都可使用, 則兩者都要符合.

2.  IEC61000-3-2 的 class C並沒有要求對 >25W 需要 PF > 0.9, 其要求諧波限制如下表. (可用Chroma 66202+softpanel
來驗證). 請問你說LED驅動器要 PF>0.9, 是依照哪個法規 ?


但其實Steven_Liu 先生不用馬上下結論,  能源之星EPS 2.0是指adaptor, 是否有包括LED驅動電源, 還需查證.
請問你的產品輸出是電壓源還是電流源 ?  一般應是電流源吧.

谢谢楼主.
1: EN61000-3-2 Class C对谐波骚扰的限制实际上就等于对有功功率>25W的产品提出了功率因数要求:功率因数低于0.9的电子镇流器是很难满足EN61000-3-2标准的(电感镇流器除外).
2: 欧洲肯定会要求>25W的大功率LED电源必须符合EN61000-3-2(尽管现在还没有颁布).因为它属于照明电源嘛!我们按照最严格的条件开发产品就不会出问题.
3: LED电源的待机功耗要求我是在Philips的LED驱动芯片发布会上看到的.作为照明产品,待机功耗是没有任何要求的,只是能源之星对开关电源有要求.所以我认为对LED照明电源也提出待机功耗要求只不过是那些芯片厂商想垄断LED驱动芯片市场而提出的一些技术壁垒,没有任何实际用处.
4: 通过几天的技术攻关,我的L6562D单级PFC 30W LED电源已经达到了EPS2.0要求.增加了几个元件,控制好启动电流就好了.
5: LED电源一般只能使用恒流电源,对于100W以上的大功率LED电源有的厂家对每串LED单独恒流,比如17串4并,那么就要做4个DC-DC恒流模块.我想了个办法可以让DC-DC恒流模块降价80%.不知哪位DX对该项目有研究,我想跟他交流一下.

能源之星2.0標準中應該是輸出功率>75W的就要求PF>0.9, 這是我從原文中摘錄的, 難道我找的標準是錯誤的?


B. Power Factor Correction
In addition to the Active Mode efficiency requirements found above, all qualifying power supplies with a nameplate output power (Pno) of greater than or equal to 75 watts must have a true power factor of 0.9 or greater when measured at 100% of rated output.
Note: In recent years, there has been increased interest from the international efficiency community in decreasing the effect that high wattage products have on power quality. To this end, EPA has included power factor requirements for high power devices. Power factor correction helps to cut I-squared R losses in building distribution wiring significantly, yielding increased savings in large buildings. For the purpose of this specification, all EPSs with a power output of at least 75 watts will be required to have a power factor of at least 0.9 at 100% of rated load. This 75-watt cutoff coincides with the European regulation EN 61000-3-2, which went into effect in 2001 and requires limited total harmonic distortion for appliances above 75 watts input power. A power factor of at least 0.9 at 100% of rated load is consistent with the internal power supply requirement in the Version 4.0 ENERGY STAR Computer specification. At these levels, approximately 90% of current ENERGY STAR qualified power supplies can meet this requirement.

由法規 IEC61000-3-2 的燈具歸類 Class C 而言, 確實沒提到對 PF 值的要求, 原文如下.
至於能源之星對於 External power supply 2.0 規範而言, 指的是輸出為固定電壓的 adaptor
類的電源, 我不認為有包含LED driver.

Limits for Class C equipment
a) Active input power >25 W
For lighting equipment having an active input power greater than 25 W, the harmonic
currents shall not exceed the relative limits given in table 2.
However, the limits given in table 1 apply to incandescent lighting equipment that has builtin
dimmers or consists of dimmers built in an enclosure.
For discharge lighting equipment that has built-in dimmers or consists of independent
dimmers or dimmers built in an enclosure, the following conditions apply:
– the harmonic current values for the maximum load condition derived from the
percentage limits given in table 2 shall not be exceeded;
– in any dimming position, the harmonic current shall not exceed the value of current
allowed in the maximum load condition;
– the equipment shall be tested according to the conditions given in C.5

TKS

     若有興趣，歡迎跟貼交流哈~~~

请问有没有充电器的能效测试方法，多谢！

待机功耗做个辅助电源就好过了哈~

只是对成本积这些要求~

能源之星已經有標準了,你到官方网站上查下, ERP暫時還沒有發現有這個標準.

这产品测试不知如何，现在已经要求到超能源之星了。有电流档位到1MA的吗？？现示可以到0.001mw的？？CP-268可以啊。也很好。