Quality and Stability of Embedded Power DC Networks

Piquet, Hubert; Roux, Nicolas; Nahid‐Mobarakeh, Babak; Pierfederici, Serge; Magne, Pierre; Faucher, J.

doi:10.1002/9781118569863.ch5

Cited by 2 publications

(2 citation statements)

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“…Indeed, both Nyquist plots don't encircle the critical point (-1, 0) and, hence, are qualified for Middlebrook criterion [11] for V dc =300V. Moreover, power quality performance of the two systems can be quantified by considering their stability margins; Gain Margin (GM) and Phase Margin (PM) [7]. These define robustness margins which prevent the system unstability in case of eventual parameters variations and/or load perturbation of the system.…”

Section: A Bode and Nyquist Plots Analysismentioning

confidence: 99%

“…Moreover, the more the output power of the inverter is, the lower the stability. This means that for a given set of parameters, there is a maximum power that the inverter can deliver to the motor, independantly from the power rating of the source and the current rating of the components [7]. As a result, it is important to analyze stability of interaction between the boost converter and the inverter when designing the traction system.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic analysis of the interaction between an Interleaved Boost Converter with Coupled Inductor and a Constant Power Load

Hou

Magne

Bilgin

et al. 2014

2014 IEEE Transportation Electrification Conference and Expo (ITEC)

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This paper presents the dynamic analysis of the interaction between an Interleaved Boost Converter with Coupled Inductor (DPCI) and a Constant Power Load (CPL). In order to perform the analysis, the analytical determination of the output impedance of the DPCI is presented, as well as the input impedance of CPL. Then, the same analysis is proposed for a conventional Boost Converter in order to compare the two topologies. Based on identical specifications and operating conditions corresponding to an electrified vehicle, the two cascaded systems are analyzed and compared. The impedance and stability analysis are given by small-signal approach. Accuracy of the analyses is verified using MATLAB/Simulink simulations. Results of the study show that the DPCI presents better output impedance characteristics than the conventional topology. Therefore, considering similar specifications and controller, asymptotic stability and power quality of the DC-bus is improved by using DPCI. Index Terms-Hybridelectric vehicle, DC-DC boost converter, coupled inductor, constant power load, stability analysis.I.

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Section: A Bode and Nyquist Plots Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%