中文摘要：

基于居民单相整流性负荷开关电源的基本电路,在时域内通过数值迭代分析得到谐波等效电路各项参数值,进而推导出其频域谐波模型--交叉导纳矩阵,将时域非线性特性表达成频域线性导纳矩阵的形式.仿真结果表明,模型输出谐波电流与实测结果及仿真结果基本一致,验证了交叉导纳矩阵模型的准确性.

英文摘要：

The Single-phase bridge loads are a typical residential load harmonic sources, whosecurrent total harmonic distortion rate can be quite high. There are a large number of single-phasebridge loads widely distributing in the distribution network. Based on the generic circuit of theswitching power supply, the parameters values of the basic circuit are solved through numericaliteration in the time domain. Then the frequency domain harmonic model, cross admittance matrixis derived, which transfers nonlinear characteristics of the Single-phase bridge loads in the time-domain to linear admittance matrices in the frequency-domain. Test results show that the outputharmonic current of this model basically conforms to measurements and simulation results. So themodel built by cross admittance matrix possesses high accuracy.