Results 231 to 240 of about 63,993 (274)

LIMIT CYCLE BIFURCATION INDUCED BY RATE-LIMITERS IN THE FEEDBACK LOOP

IFAC Proceedings Volumes, 2006
Abstract The effect of rate-limiters in open-loop unstable linear systems is studied. The case of first order plants is considered, which after including the rate-limiter gives rise to a discontinuous second order dynamical system. The existence of one unstable limit cycle, born through a bifurcation at infinity and bounding the attraction basin of ...
Enrique Ponce, Manuel Roman
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A fast method for detecting limit-induced bifurcation in electric power systems

Electric Power Systems Research, 2020
Abstract In this paper, the foundations of limit-induced bifurcations (LIB), which usually occur with the violation of limits of reactive power generation, are revisited and further developed to derive a fast method for detecting their occurrence.
Lucas Sales Neves, Luís Fernando Costa Alberto, Hsiao-Dong Chiang   +2 more
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Bifurcation and limit cycle analysis of nonlinear pilot induced oscillations

23rd Atmospheric Flight Mechanics Conference, 1998
Pilot-Induced Oscillation (PIO) is an instability resulting from the dynamic interaction between the pilot and the aircraft. In this paper, we present a general framework for the analysis of nonlinear PIO. The approach involves the computation of nonlinear phenomena such as Hopf bifurcation that lead to large changes in structural stability of the ...
R. Mehra, R. Prasanth
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Complementary limit induced bifurcation theorem and analysis of Q limits in power-flow studies

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability, 2007
Complementary limit describes a change in system structure when two variables and constants in the system model exchange their status. Complementary limits have been used in the power system literature in the past for modeling the Q limit problem in power-flow equations.
null Xunning Yue, Vaithianathan Mani Venkatasubramanian   +1 more
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Comparative Study of Voltage Security Indices in Terms of Limit-Induced Bifurcation Effect

2020 International Conference on Smart Grids and Energy Systems (SGES), 2020
This paper compares six types of major voltage security indices (VSIs) in terms of limit-induced bifurcation (LIB) effect. The compared VSIs are the voltage collapse proximity indicator (VCPI), L-index, L mn -index, minimum singular value (MSV), tangent vector index (TVI), and optimal-power-flow-based direct method (OPF-DM). These VSIs are evaluated on
Shota Omi, Yasuyuki Shirai
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Enhanced visualization of power system stability limits imposed by singularity induced bifurcations

2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353), 2002
This paper attempts to provide an analytically based visualization tool for investigating the existence of singularity induced bifurcations along with corresponding singular sets of operating points in power systems. This tool is based on the solution of a set of parameter dependent differential-algebraic equations (DAE's) for analyzing power system ...
Nwankpa, C, Ayasun, SAFFET, Kwatny, HG
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Evaluation of stability limits imposed by singularity induced and saddle node bifurcations

Proceedings of the 38th IEEE Conference on Decision and Control (Cat. No.99CH36304), 2003
This paper investigates the existence of singularity induced bifurcations along with corresponding singular sets of operating points in power systems. The power system is modeled as a set of parameter dependent differential-algebraic equations (DAE's). We propose a method to identify algebraic singularity of the model and investigate the effects of the
S. Ayasun, C. Nwankpa, H.G. Kwatny
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A fast method of voltage stability margin load for limit induced bifurcation

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2013
Limit induced bifurcation (LIB) of power system is usually caused by reactive power output of generators exceeds the limit. According to this feature, a fast calculation method for voltage stability load margin of limit induced bifurcation is presented.
Yao Dan, Zhong Hao
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A new bifurcation in non-smooth continuous system inducing semi-limit cycle

Physics Letters A, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, D. H., Liu, Q. X., Chen, Y. M.
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Input band-pass limiting in a PLL: its influence on interference-induced bifurcation

Thirty-Sixth Southeastern Symposium on System Theory, 2004. Proceedings of the, 2004
The sum of a desired tone and an interfering, offset in frequency by v radians/second, tone is considered as the input reference signal for a system comprised of an ideal band-pass limiter and first-order PLL combination. Parameter y denotes the ratio of interfering signal to desired signal amplitudes. In the first of two cases, this two-tone reference
J. Stensby, M. Tillman
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