Power Sharing And Management Through Power Based Droop Control in DC microgrid

Nayar, Saurabh; Ghose, T. K.

doi:10.1109/iceca.2019.8822030

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…(𝑘 + 𝑖) ∀𝑘 > 0 (15) Therefore, the cost function in ( 14) can be rewritten as 𝑔 ∆𝑢(𝑘), ∆𝑖 (𝑘) = 𝜞 𝒚 (𝒀 𝟑 (𝑘 + 1|𝑘) − 𝑹(𝑘 + 1))…”

Section: 𝑠 𝑡 ∆𝑢(𝑘 + 𝑖 + 1|𝑘) = 𝐴∆𝑢(𝑘 + 𝑖|𝑘) + 𝐵 ∆𝑖 (𝑘 + 𝑖) +𝐵 ∆𝑖 (𝑘 +...mentioning

confidence: 99%

“…In addition to current sharing, owing to droop control, the DC-link voltage deviation may increase with the load changes. Hence, several solutions have been proposed to mitigate this issue [14][15][16]. In [14], the current sharing accuracy and DC-link voltage restoration were improved through an improved droop control of low-bandwidth communication.…”

Section: Introductionmentioning

confidence: 99%

“…In [14], the current sharing accuracy and DC-link voltage restoration were improved through an improved droop control of low-bandwidth communication. In [15], a closedloop control strategy based on droop characteristics that can achieve accurate power distributions in both islanded and gridconnected DC-MGs was proposed. In [16], an observer-based DC voltage drop and current feedforward control strategy was proposed to effectively improve the dynamic response of DClink voltage control by observers.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the system stability is enhanced. This significantly benefits the frequent charging and discharging current test control of the batteries in a DC-MG. 3) Different with our previous work in [15], the virtual inertia support in PABTS-DC MG is realized by the AC-grid and a BGCC controlled by MPC-VIC method, which does not need an additional ESS and greatly saves the system cost. The remainder of this paper is organized as follows: Section II describes the configurations of the PABTS DC-MG and the concept of inertia regulation.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Voltage Regulation Enhancement of DC-MG Based on Power Accumulator Battery Test System: MPC-Controlled Virtual Inertia Approach

Liu

Zeng

Rodríguez

et al. 2022

IEEE Trans. Smart Grid

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In a DC-microgrid (DC-MG) composed of a power accumulator battery test system (PABTS), owing to the low inertia of DC capacitance, the charging and discharging of a PABTS can easily cause DC-link voltage fluctuations, which may jeopardize the system stability. Hence, a virtual inertia control (VIC) strategy is proposed to suppress these fluctuations and enhance the stability of the DC-MG. The VIC method is realized in a bidirectional gridconnected converter (BGCC), which combines VIC and model predictive control (MPC). The proposed method can provide inertia support during the transient state and enhance the dynamic characteristics of the DC-link voltage. A prediction model is established that uses the variation range of the DC-link voltage as the constraint, and the output of VIC as well as voltage deviations as optimization objectives. The desired DC-link current increment is calculated using the prediction model to change the input DC current reference of the VIC. To validate the effectiveness of the proposed method, hardware-in-the-loop (HIL) experiments are performed, and the results indicate that MPC-VIC is superior to the existing VIC methods in terms of inertia support and the DClink voltage variation suppression of PABTS DC-MGs.

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“…(𝑘 + 𝑖) ∀𝑘 > 0 (15) Therefore, the cost function in ( 14) can be rewritten as 𝑔 ∆𝑢(𝑘), ∆𝑖 (𝑘) = 𝜞 𝒚 (𝒀 𝟑 (𝑘 + 1|𝑘) − 𝑹(𝑘 + 1))…”

Section: 𝑠 𝑡 ∆𝑢(𝑘 + 𝑖 + 1|𝑘) = 𝐴∆𝑢(𝑘 + 𝑖|𝑘) + 𝐵 ∆𝑖 (𝑘 + 𝑖) +𝐵 ∆𝑖 (𝑘 +...mentioning

confidence: 99%