happyzhangly 发表于 2015-5-27 11:44

UL 1741 第45.4测试怎么测试? 急求!

45.4 Harmonic distortion
45.4.1 For a stand-alone inverter, the total rms of the harmonic voltages, excluding the fundamental delivered, shall not exceed 30 percent of the fundamental rms output voltage rating. The rms voltage in any single harmonic shall not exceed 15 percent of the nominal fundamental rms output voltage rating.
The measurements are to be made with the inverter delivering 100 percent of its rating to a resistive load.
Exception: A unit having total rms harmonic voltages exceeding 30 percent of the fundamental rms output voltage rating meets the intent of the requirement when the inverter is marked in accordance with 63.28.
各位大侠, 谁了解这个测试怎么做, 求解答, 感谢

juanjuan1 发表于 2015-5-28 10:27

有见谐波电流,没有见过谐波失真。帮不上忙

戏尘 发表于 2015-5-29 21:44

个人觉得 UL这个测试写的是测试离网型逆变器的谐波电流和谐波电压。没有觉得什么奇怪啊。 我之前做CEI-021的标准知识模拟在谐波的环境下让并网型逆变器进行工作测试其过欠频和过欠压。

happyzhangly 发表于 2015-6-2 13:24

戏尘 发表于 2015-5-29 21:44 static/image/common/back.gif
个人觉得 UL这个测试写的是测试离网型逆变器的谐波电流和谐波电压。没有觉得什么奇怪啊。 我之前做CEI-021的 ...

具体怎么操作呢

戏尘 发表于 2015-6-2 13:29

happyzhangly 发表于 2015-6-2 13:24 static/image/common/back.gif
具体怎么操作呢

很可惜 我不在你实验室, 我之前是在电网模拟器里面加谐波然后输出接上并网逆变器, 进行测试 你这个离网的应该只是测试一下谐波电压和谐波电流,
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