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| Construction of Macromodel in Time Domain for Power Distribution Network Using Modified Gram-Schmidt Orthogonal |
| Hu Jin①②; Wang Hua-li①; Jin Li-feng② |
| ①Institute of Communications Engineering, PLAUST, Nanjing 210007, China;②JiangNan Research Institute of Computing Technology, Wuxi 214083, China |
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Abstract The ill-conditioned normal equations bring numerical problems in construction of macromodel in time domain for power distribution networking using rational function approximation. This paper presents the superdefinite equations coefficient matrix can be decomposed in QR form using modified Gram-Schmidt orthogonal and the accurate passive macromodel in time domain can be constructed based on Bernoulli polynomial root finding method and the formulae for stability and passivity. Finally, a broadband passive macromodel constructed from DC to 1GHz is given to demonstrate the validity and accuracy of the method.
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Received: 17 April 2006
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2007, Vol. 29 
