Control of Cascaded DC–DC Converter-Based Hybrid Battery Energy Storage Systems—Part II: Lyapunov Approach

Mukherjee, Nilanjan; Strickland, Dani

doi:10.1109/tie.2015.2511159

Cited by 50 publications

(20 citation statements)

References 31 publications

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“…They analysed the stability issue and the limitations of the conventional approach [13]. They also proposed a control method based on Lyapunov functions for stability of the system [14]. Whatever, the batteries and its own converters were cascaded for higher voltage to provide the PWM inverter in the hybrid battery system.…”

Section: The Institute Of Electrical Engineering Of Chinese Academy Omentioning

confidence: 99%

Impedance Analysis of Battery Bidirectional DC-DC Converter

Liu

2020

IEEE Access

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When a converter is composed of cascaded system with another unknown converter, the optimal design of the converter is especially important owing to stability of the cascaded systems. Battery 's model is introduced to analysis. Battery converter's different work conditions are considered. Battery converter is the front stage when it discharges, and it is the rear one when it charges in a cascade DC system. From the view of impedance, it's good for the cascaded system stability to reduce output impedance of battery converter when the converter is the first stage. Another, increasing the converter's input impedance could improve the cascade system stability when the converter becomes the rear one. The battery equivalent circuit model is introduced as a key component of system. Battery bidirectional converter should act as the front or rear stage of cascaded system. Selection rules of LC filter are put forward according to analyzing the inductor and capacitor's effects on two conditions. The PI controller parameters' effects on impedance are analyzed to furnish the basis for the PI controller parameters selection. Finally, experiment is carried out to verify the correctness of the analyses. INDEX TERMS Battery equivalent model, bidirectional DC-DC converter, cascade system, impedance analysis, small-signal model.

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Section: The Institute Of Electrical Engineering Of Chinese Academy Omentioning

confidence: 99%

Impedance Analysis of Battery Bidirectional DC-DC Converter

Liu

2020

IEEE Access

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“…With the same PI parameters, the changes of equivalent inductance L s may cause instability. Thus, the global stability concept mentioned in this paper is different from the definition of Mukherjee and Strickland [27], and the method of Mukherjee and Strickland [27] also applies to the case where the system parameters are subjected to variations.…”

Section: Estimating Regions Of Asymptotic Stabilitymentioning

confidence: 99%

Global asymptotic stability assessment of three‐phase inverters with saturation

Zhu

Liu

Qin

et al. 2018

IET Power Electronics

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Saturation is reported to have a significant influence on the stability of the inverter. In this study, a direct Lyapunov function method to analyse the stability of a three-phase inverter with saturation is presented. The overall model of the threephase inverter is established and the order of the original model is reduced based on the singular perturbation theory. Then the global asymptotic stability assessments of inverters are transformed into linear matrix inequalities problems that are easy to be solved numerically. Through the analysis of this study, it can be proved that the three-phase inverter based on conventional proportional-integral modulation can achieve global stabilisation. The proportional coefficients of the voltage loop have the greatest influence on the stability of the three-phase inverter. Besides, the saturation also has an important effect on the stability of the inverter. The proposed method has some advantages compared with the small-signal analysis. It can quantify the stability degree of the inverter and explain some non-linear phenomena caused by saturation. Simulation developed in PSCAD demonstrates the effectiveness of this method and the results are compared with the real-time digital simulation results implemented in RT-LAB and hardware results.

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“…The linear control is generally employed for energy management of the hybrid system. Generally, proportional-integral (PI) compensation is used for energy stability [8][9][10][11][12]. In [13], Marzouguia et al have proposed a control technique of the hybrid network for a hydrogen electric vehicle (fuel cell car) based on three estimation approaches: first, "a fuzzy logic estimation"; second, "a differential flatness control approach" (model-based technique); third "rule-based algorithm", making complex the energy management strategy.…”

Section: Introductionmentioning

confidence: 99%

Differential Flatness-Based Cascade Energy/Current Control of Battery/Supercapacitor Hybrid Source for Modern e–Vehicle Applications

et al. 2020

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This article proposes a new control law for an embedded DC distributed network supplied by a supercapacitor module (as a supplementary source) and a battery module (as the main generator) for transportation applications. A novel control algorithm based on the nonlinear differential flatness approach is studied and implemented in the laboratory. Using the differential flatness theory, straightforward solutions to nonlinear system stability problems and energy management have been developed. To evaluate the performance of the studied control technique, a hardware power electronics system is designed and implemented with a fully digital calculation (real-time system) realized with a MicroLabBox dSPACE platform (dual-core processor and FPGA). Obtained test bench results with a small scale prototype platform (a supercapacitor module of 160 V, 6 F and a battery module of 120 V, 40 Ah) corroborate the excellent control structure during drive cycles: steady-state and dynamics.

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Control of Cascaded DC–DC Converter-Based Hybrid Battery Energy Storage Systems—Part II: Lyapunov Approach

Cited by 50 publications

References 31 publications

Impedance Analysis of Battery Bidirectional DC-DC Converter

Impedance Analysis of Battery Bidirectional DC-DC Converter

Global asymptotic stability assessment of three‐phase inverters with saturation

Differential Flatness-Based Cascade Energy/Current Control of Battery/Supercapacitor Hybrid Source for Modern e–Vehicle Applications

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