Calorimetric Power Loss Measurement for Highly Efficient Converters
Calorimetric Power Loss Measurement for Highly Efficient Converters
复制标题
高效转换器的量热功率损耗测量
DOI：
10.1109/ipec.2010.5544503
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Kolar
中科院分区：
文献类型：
--
作者：
D. Christen;U. Badstuebner;J. Biela;J. Kolar
如果采用校准良好的电压表和分流电阻器，则通过测量输入和输出功率来确定功率损耗的电气确定可以达到DC-DC转换器系统的足够精度。然而，由于电力测量中的相位误差，使得交流系统的功率难以确定，特别是在谐波情况下。此外，开关电源的电磁干扰（EMI）也会对电能计量产生干扰。在本文中，热量测定的功率变换器系统损耗导致的高精度，这是几乎免疫的EMI相位误差，进行了说明。封闭式量热计采用双夹套腔体实现，可对几kW的功率转换器系统进行10 W至200 W之间的功率损耗测量。在整个测量范围内，所实施的测量系统的所得偏差分别小于±0.4W或±0.05%（在满载条件下（几kW））。
The electrical determination of power losses by measuring the input and output power can reach sufficient accuracy for DC-DC converter systems, if well calibrated voltage meters and shunt resistors are applied. However, it is difficult to determine the power in AC-systems, especially with harmonics, due to phase-errors in the electric measurement. In addition, the electromagnetic interference (EMI) of switched-mode power supplies can disturb the electric power measurement. In this paper, the calorimetric determination of power converter system losses resulting in a high accuracy and which is almost immune against EMI phase errors, is described. The closed-type calorimeter is realized with a double-jacketed chamber which enables the power loss measurement between 10W and 200W for power converter systems of several kW. The resulting deviation of the implemented measurement system is less than ±0.4W, or ±0.05% at full load conditions (several kW), respectively, over the entire measurement range.