NDLI: Analysis of stability for networks including converters

Content Provider	IEEE Xplore Digital Library
Author	Strobl, B.
Copyright Year	2007
Description	Author affiliation: SIEMENS AG, Erlangen (Strobl, B.)
Abstract	Stability is a very important property of control loop systems. For Linear Time Invariant (LTI) systems the Nyquist criterion is well known. In systems with converters, signals with different frequencies are related, these systems are not LTI. To describe them, the theory for Linear Time Periodic (LTP) systems can be used: The transfer function of the LTI systems is extended to the transfer matrix of LTP systems; the Nyquist criterion can also be extended for these systems using the eigenloci of the transfer matrix. Regarding Exponentially Modulated Periodic (EMP) signals as stationary solutions for LTI or LTP systems, an alternative approach is presented: The Nyquist criterion can be derivated using the relation between the Nyquist plot and the conformal map of the transfer function for LTI systems. With this, a transfer function of the open loop is defined also for LTP systems. As will be shown the Nyquist criterion can be applied to this transfer function for LTP systems.
Starting Page	1
Ending Page	10
File Size	210034
Page Count	10
File Format	PDF
ISBN	9789275815108
DOI	10.1109/EPE.2007.4417403
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-02
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	EPE Association
Subject Keyword	harmonic transfer matrix linear time periodic systems Transfer functions Transportation device modelling Nonlinear control systems Harmonic analysis Stability analysis EMP radiation effects Control methods for electrical systems converter control modelling harmonics Time invariant systems Control system synthesis Circuit stability non-linear control Matrix converters stability
Content Type	Text
Resource Type	Article

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