Implementation of a virtual inertia control for inertia enhancement of a DC microgrid under both grid connected and isolated operation

Samanta, Soumya; Mishra, Jyoti; Roy, Binoy Krishna

doi:10.1016/j.compeleceng.2019.04.006

Cited by 40 publications

(12 citation statements)

References 21 publications

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“…However, the outer or higher level control is different. Under Method-I, we have implemented PI controller, better-tuned PI controller, VI (Guo et al, 2016; Hamzeh et al, 2016) and virtual inertia-based control approaches (Samanta et al, 2019). Different nonlinear control approaches like SMC, hybrid MPC, and so forth, are used under Method II.…”

Section: Controller Design For Energy Management and Damping Improvementmentioning

confidence: 99%

“…The Control Method-1 can address both the objectives under different scenarios, as discussed later. Recently, virtual inertia and damping emulation techniques like virtual inertia control (VIC) by Hosseinipour and Hojabri (2017); Samanta et al (2019), virtual DC machine by Samanta et al (2018), and so forth, are proposed for a DC microgrid to improve its inertia and damping. But, the performance of these techniques is not tested for a CPL connected to a DC microgrid.…”

Section: Introductionmentioning

confidence: 99%

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Energy management and damping improvement of a DC microgrid with constant power load using interconnection and damping assignment-passivity based control

Samanta

Barman

Mishra

et al. 2020

Transactions of the Institute of Measurement and Control

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This paper deals with (i) damping improvement and (ii) energy management of a DC microgrid for improvement of its stability. The direct current (DC) microgrid has a solar-photovoltaic system as a renewable source and fuel cell-battery combination as a backup system to supply power to constant power loads (CPLs). The presence of CPLs in a DC microgrid makes the stability problem more challenging since the negative impedance characteristics of CPLs bring instability into the system. A control approach using interconnection and damping assignment-passivity based control (IDA-PBC) is proposed in this paper to address both the objectives. The proposed control approach provides an efficient energy management, the required damping and also maintains the stability by making the system passive. The tuning parameters of the control laws are adapted incorporating the state of charge (SoC) for the effective energy management. In addition, an integral action is added with the proposed control laws to eliminate the steady-state error in the voltage level of the DC bus and load bus. The proposed IDA-PBC control along with an integral action is compared with four other control approaches, and reveals its better performances. The MATLAB/Simulink results show that the proposed control technique provides better responses in terms of providing damping and effective energy management.

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Section: Controller Design For Energy Management and Damping Improvementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy management and damping improvement of a DC microgrid with constant power load using interconnection and damping assignment-passivity based control

Samanta

Barman

Mishra

et al. 2020

Transactions of the Institute of Measurement and Control

Self Cite

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show abstract

“…VSG is also implemented to integrate a DC microgrid with the utility grid [17]. In [18, 19], the concept of VIC for a grid connected inverter of a DC microgrid is developed from the concept of VSM control to regulate the DC bus voltage. Similarly, inertia emulation techniques like VIC, virtual DC machine for bidirectional DC–DC converter is proposed in [20, 21] to regulate the DC bus voltage of an isolated DC microgrid.…”

Section: Introductionmentioning

confidence: 99%

Isochronous control of a virtual synchronous generator using inertia and excitation emulations with restoration control in a standalone microgrid

2020

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“…In [16,17], the inertial control of the energy storage terminal is analysed and the traditional droop control is improved, but actual constraints of the converter are ignored. Moreover, various methods, such as feedforward control [18,19], model predictive control [20,21] and so forth are also carried out in virtual inertia control to maintain the stability of the DC bus voltage.…”

Section: Introductionmentioning

confidence: 99%

Flexible virtual capacitance control strategy for a DC microgrid with multiple constraints

Meng

Zhang

Wáng

et al. 2020

IET Renewable Power Generation

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In a DC microgrid, the anti-interference ability of bus voltage can easily become vulnerable due to low inertia caused by a large number of power electronic converters. This has already challenged the system stability and practicability in DC girds. In this study, a flexible virtual capacitance (FVC) control strategy with multiple constraints (MCs) is proposed to guarantee the security and stability of the DC microgrid, where the system stability, dynamic characteristics, actual operation requirements and realisability are considered as MCs. The FVC controller, which mainly modifies the reference current in voltage source converter by flexibly regulating virtual capacitance value, is given to provide inertial support and improve voltage quality. The stable operating boundary calculation based on small signal model and key control parameters design are further introduced into the control loop. This can ameliorate the dynamic response of the microgrid and obtain the better engineering practicability. Finally, experiment tests on a controller-level hardware-in-the-loop simulation platform are carried out to verify the validity of the proposed strategy.

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Implementation of a virtual inertia control for inertia enhancement of a DC microgrid under both grid connected and isolated operation

Cited by 40 publications

References 21 publications

Energy management and damping improvement of a DC microgrid with constant power load using interconnection and damping assignment-passivity based control

Energy management and damping improvement of a DC microgrid with constant power load using interconnection and damping assignment-passivity based control

Isochronous control of a virtual synchronous generator using inertia and excitation emulations with restoration control in a standalone microgrid

Flexible virtual capacitance control strategy for a DC microgrid with multiple constraints

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