An adaptive voltage‐regulation control strategy of an electric spring based on output current feedback

Chen, Yixi; Ma, Gang; Wang, Ying; Xu, Guchao

doi:10.1002/tee.22820

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…In order to solve the problem of bus voltage fluctuation caused by daily prediction power deviation of Prosumer unit, SL is used to adjust the overall active power of Prosumer to replace part of energy storage [28]. SL quadrant control method is used to control the active power of Prosumer, whose control phasor diagram is shown in Figure 3 [21]. Where, VS is the supply voltage; VNCL' and IES' are respectively the voltages and currents of non-critical loads before ES starts to work; VNCL and IES are respectively the voltages and currents of non-critical loads after ES starts to work; VES is the voltage of ES.…”

Section: Prosumer Daily Real-time Energy Manage-ment Methodsmentioning

confidence: 99%

“…SL is composed of an electric spring (ES) in series with non-critical loads in the Prosumer (such as a household water heater, lighting system) of which the operating voltage can withstand a certain degree of deviation [20]. Nowadays, the flexible control method of SL's active power has been deeply studied [21][22][23][24], so it is certainly significant to use SL in the energy flow management of Prosumer.…”

Section: Introductionmentioning

confidence: 99%

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The Prosumer Energy Management Method Based on Smart Load

Lyu

Wang

et al. 2020

IEEE Access

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With the development of household photovoltaic and electric vehicles, household electricity units are no longer traditional power consumers, but also power producers, which are defined as Prosumers. In order to solve the problems of Prosumer energy circulation and its grid-connected control, this paper proposes a new Prosumer energy management method. First, PSO algorithm is used for day-ahead optimization to smooth the load curve of prosumer. Then based on the Smart Load (SL) which can control the active power flexibly, the real-time energy management method of Prosumer is proposed. At last, the multi-Prosumers grid-connected hierarchical control strategy is established combined with tree-shaped and ring-shaped agent technology. Not only can it improve the utilization rate of household photovoltaics, but also it can reduce the adverse effects of photovoltaic and EV large-scale grid-connected in the traditional way. On the basis of participating in the load regulation of the distribution network, Prosumer can improve the stability of its power consumption.

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Section: Prosumer Daily Real-time Energy Manage-ment Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Prosumer Energy Management Method Based on Smart Load

Lyu

Wang

et al. 2020

IEEE Access

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“…), which can be a single or a group of electrical loads [26]. The ES smooths out voltage fluctuation by issuing a reactive voltage V ES that is 90° or −90° away from the current I ES flowing through it to the distribution network [27,28]. The angle of V ES leading I ES is θ , and the NCL impedance angle is φ , then the vector diagram of reactive power control is shown in Fig.…”

Section: Model Of Dstatcom and Esmentioning

confidence: 99%

A Cooperative Voltage Control Method for Distribution Network Based on DSTATCOM and ES

Zhang

Lyu

et al. 2020

IEEJ Transactions Elec Engng

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In recent years, with the large-scale access of distributed generation (DG), the line voltage of the distribution network will be offset, which will adversely affect users. This paper aims at the voltage adjustment of the distribution network. Firstly, the reactive power control methods of distributed static synchronous compensator (DSTATCOM) and electric spring (ES) are studied separately, and then a layered cooperative control strategy based on them is proposed, which combines centralized compensation and distributed compensation to stabilize the entire line voltage. The upper layer aims at optimizing the comprehensive factors including voltage offset, user comfort and cost, and applies the dynamic adaptive particle swarm optimization (DAPSO) algorithm to study the optimal scheme of voltage adjustment. The lower layer designs the control loops of the compensation devices in response to the reactive power instruction. Finally, simulation results show that the voltage of the distribution network is effectively controlled.

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“…Considering the switching of NCL during operation, Refs. [23,24] proposed a self-adaptive voltage control strategy. Ref.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Sliding-Mode Control for Electric Spring in Microgrids with Distributed Renewable Energy

Yin

Wang

2022

Energies

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Electric springs (ESs) are novel electric-power devices that alleviate power-quality problems such as voltage fluctuations induced by grid access to renewable energy resources. However, with the continuous increase of uncertain factors such as parameter perturbation and external disturbance, the environment becomes more complicated, so traditional linear controllers for ESs are finding it increasingly difficult to meet the control requirements due to narrow stability regions, low precision, and poor robustness. To overcome this problem, we propose herein a control method that combines adaptive control and sliding-mode control and apply it to ESs. First, an inexact model of the ES system was established and analyzed. Next, an ES control system was designed based on adaptive sliding-mode control, and then the asymptotic stability of the closed-loop system is proven. Finally, the proposed control system was verified through a MATLAB simulation. The results show that adaptive sliding-mode control not only ensures the voltage stability of critical loads in the microgrid but also resists the influence of parameter perturbation and external disturbances, leading to better steady-state and dynamic performance than a linear controller.

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An adaptive voltage‐regulation control strategy of an electric spring based on output current feedback

Cited by 5 publications

References 25 publications

The Prosumer Energy Management Method Based on Smart Load

The Prosumer Energy Management Method Based on Smart Load

A Cooperative Voltage Control Method for Distribution Network Based on DSTATCOM and ES

Adaptive Sliding-Mode Control for Electric Spring in Microgrids with Distributed Renewable Energy

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