Research on the Asymmetrical Multilevel Hybrid Energy Storage System Based on Hybrid Carrier Modulation

Wei, Jiang; Ren, Kai; Xue, Shuai; Cui, Yang; Xu, Zhiqi

doi:10.1109/tie.2020.2967723

Cited by 9 publications

(13 citation statements)

References 27 publications

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“…Based on the voltage of the individual battery modules, CHB topology can be subclassified into symmetrical (SCHB) [62,63] and asymmetrical (ACHB) configurations [64,65].…”

Section: 𝑉 𝑏1 𝑽𝑫𝑽𝑹mentioning

confidence: 99%

“…Based on the active-balancing principle in Section 2.2.1, seven state-of-the-art multiport MLC topologies that can perform active balancing among the battery modules were shortlisted. These topologies include (i) symmetric CHB [62,63], (ii) asymmetric CHB [64,65,67,88], (iii) RCHB [35,36,38,[66][67][68][69][70][71][72][73][74][75][76], (iv) MCMLC [4,79,85], (v) HB/FB MLC [81], and (vi) ACHHB [90]. The passive-element count in Table 3 also includes the filter inductor for a grid interface.…”

Section: Topological Comparisonmentioning

confidence: 99%

“…SCHB [62,63] and ACHB [64,65,67,88] can perform both offtake and injection with no operational limitation. However, ACHB entails a large string of cells in each module (>30), which leads to large and uneven steps in the AC voltage, ultimately resulting in high THD exceeding the grid codes.…”

Section: On-grid Operationmentioning

confidence: 99%

See 2 more Smart Citations

A Review on Multilevel Converters for Efficient Integration of Battery Systems in Stationary Applications

Rauf

Abdel-Monem²,

Geury

et al. 2023

Energies

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Recently, multilevel converters (MLCs) have gained significant attention for stationary applications, including static compensators, industrial drives, and utility-grid interfaces for renewable energy sources. Compared to two-level voltage-source inverters (VSI) MLCs feature high-quality AC voltage with reduced harmonic content despite the lower switching frequency of the semiconductor devices. On the DC side, MLCs can integrate multiple isolated/non-isolated battery modules instead of a single battery pack. This helps to keep the system in service in case of a malfunction of one or more battery modules, as well as active balancing among the modules, a feature not possible with two-level VSI. In general, MLCs can be classified into two types: (i) two-port MLCs, which provide a single interface to connect with the battery pack, and (ii) multiport MLCs, which provide multiple interfaces to allow connection at the module or cell level. The classical topologies of both MLC types (e.g., neutral point clamped, flying capacitor, cascaded bridge) face limitations due to the high switch count. Consequently, many hybrid and reduced-switch topologies are reported in the literature. This paper presents a critical overview of both classical and recently reported MLC topologies and offers a better insight of MLC operation for grid-connected and standalone applications. In addition, the analysis thoroughly assesses various high-level control and modulation strategies while considering active balancing among the battery modules. Other salient features such as balancing speed during offtake/grid-injection mode and fault-ride-through capability are also incorporated. In conclusion, the key findings are summarized for a better understanding of the present and future integration of battery systems in stationary applications.

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“…Based on the voltage of the individual battery modules, CHB topology can be subclassified into symmetrical (SCHB) [62,63] and asymmetrical (ACHB) configurations [64,65].…”

Section: 𝑉 𝑏1 𝑽𝑫𝑽𝑹mentioning

confidence: 99%

Section: Topological Comparisonmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Multilevel Converters for Efficient Integration of Battery Systems in Stationary Applications

Rauf

Abdel-Monem²,

Geury

et al. 2023

Energies

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show abstract

“…Recent studies have explored the feasibility of active hybrid batteries based on multilevel cascaded converters with battery modules of different nature [9], [22]- [24]. Other multilevel topologies for the configuration of hybrid batteries have not been fully explored.…”

Section: Introductionmentioning

confidence: 99%

EV Hybrid Battery with Integrated Multilevel Neutral-Point-Clamped Interfacing and Lossless Module State-of-Charge Balancing

Garcia-Rojas¹,

Busquets‐Monge²,

Filbà-Martínez³

et al. 2023

Preprint

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<p>The battery is at the heart of the electric vehicle and determines many of its key performance features. Hybrid batteries, combining two battery cell chemistries, benefit from the particular strengths of each battery cell technology, such as high specific energy or high specific power. This paper proposes a novel hybrid battery configuration where the interfacing between the two sets of cells is accomplished through a bidirectional multilevel neutral-point-clamped dc-dc converter. The novel topology is presented and a suitable power converter modulation and control are developed. The feasibility and benefits of such configuration are demonstrated and illustrated. In particular, the proposed battery system features a lossless intermodule battery state-of-charge balancing within both sets of battery cells. Simulation and experimental results are provided in the case of the three-level internal battery interfacing to verify the good performance of the proposed hybrid battery configuration, modulation, and control.</p>

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“…Jiang et al (2018) employed feed-forward space-vector-modulation (FFSVM) technique for single-phase CMC-based battery-SC HESS, which can flexibly distribute power among converter cells. However, the FFSVM algorithm is time consuming especially when the number of cascaded cells is large (Jiang et al, 2021). In Wang et al (2017), Zha et al 2017, the phase shift between the output voltages of clusters and the output current are calculated according to the requirement of dc sources.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Power Allocation Control for Star-Connected Hybrid Energy Storage System Using Cascaded Multilevel Converters

Liu

Lyu

et al. 2021

Front. Energy Res.

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Hybrid energy storage system (HESS) using cascaded multilevel converters (CMC) has received increasing attention due to its merits on smoothing power fluctuations for renewable energy systems (RESs). However, CMC-based HESS still faces tough challenges due to asymmetrical ac power distribution. In this paper, hierarchical power allocation control strategy is utilized in CMC-based star-connected HESS to coordinate power between batteries and supercapacitors (SCs). Using the proposed power allocation mechanism, energy management strategy (EMS) with two operation modes can be achieved, which includes SC voltage regulation mode and power compensation mode. In SC voltage regulation mode, SC voltages are regulated to achieve long-term stable operation. Power compensation mode aims to allocate the active power fluctuation and employs SCs to mitigate it. Meanwhile, the principle of the hierarchical power allocation strategy is analyzed to facilitate the accurate control and flexible switching of different operation modes. A series of simulation and experiment tests are executed to demonstrate the performance of the proposed control strategy.

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Research on the Asymmetrical Multilevel Hybrid Energy Storage System Based on Hybrid Carrier Modulation

Cited by 9 publications

References 27 publications

A Review on Multilevel Converters for Efficient Integration of Battery Systems in Stationary Applications

A Review on Multilevel Converters for Efficient Integration of Battery Systems in Stationary Applications

EV Hybrid Battery with Integrated Multilevel Neutral-Point-Clamped Interfacing and Lossless Module State-of-Charge Balancing

Hierarchical Power Allocation Control for Star-Connected Hybrid Energy Storage System Using Cascaded Multilevel Converters

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