A novel control approach for harmonic compensation using switched power filter compensators in micro‐grids

Khosravi, Nima; Abdolmohammadi, Hamid Reza; Bagheri, Sajad; Miveh, Mohammad Reza

doi:10.1049/rpg2.12317

Cited by 15 publications

(13 citation statements)

References 44 publications

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“…In microgrids, active and passive power flters are generally used to reduce the amplitude of harmonics in the system. In the literature [8][9][10], corresponding active flter optimization design methods are proposed for diferent types of microgrids, which efectively improve the power quality of the AC busbar. Compared to the active flter, the passive flter is more suitable for scenarios with a higher power.…”

Section: Introductionmentioning

confidence: 99%

Parameter Design of Half-Bridge Converter Series Y-Connection Microgrid Grid-Connected Filter Based on Improved PSO-LSSVM

Wang

Guo

et al. 2023

International Transactions on Electrical Energy Systems

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The half-bridge converter series Y-connection microgrid (HCSY-MG) is a new type of series microgrid. In order to reduce the harmonic content in HCSY-MG grid-connected current and at the same time simplify the parameter design process of the LCL filter, this study proposed an LCL filter parameter design method based on an improved particle swarm optimization-least squares support vector machine (PSO-LSSVM) by analyzing the harmonic characteristics of the HCSY-MG grid-connected current. In addition, to enhance the convergence speed of PSO-LSSVM, the inertia factor during its parameters’ update is made to adjust adaptively according to the direction of two consecutive parameter changes to constitute an improved PSO-LSSVM. Through simulation and comparative analysis, it is demonstrated that the improved PSO-LSSVM can enhance the convergence speed; the proposed filter parameter design method can effectively reduce the harmonic content in the HCSY-MG grid-connected current and is simpler and more comprehensive than the existing design method.

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Section: Introductionmentioning

confidence: 99%

Parameter Design of Half-Bridge Converter Series Y-Connection Microgrid Grid-Connected Filter Based on Improved PSO-LSSVM

Wang

Guo

et al. 2023

International Transactions on Electrical Energy Systems

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“…Some nonlinear control algorithms have been applied to the qZSI system, including neural network control, fuzzy control, and sliding mode control of the BHO and PSO methods to adjust PI-MR controller parameters. Compared to conventional linear control algorithms to reduce the system's harmonic perturbations [20][21][22][23][24]. In actual control, each controller is independent of each other, and the number of states and constraints need to be dynamically calculated as the working conditions change.…”

Section: Introductionmentioning

confidence: 99%

Variable weight coefficient MPC control strategy for qZSI‐VSG wind power grid‐connected system

Zhang

Liu

Luo³

et al. 2023

IET Renewable Power Gen

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Quasi‐Z source inverters (qZSI) can overcome the disadvantages of conventional wind power systems, because of achieving the balanced DC‐link voltage by using its boost ability. The majority of currently used control methods for conventional inverters are susceptible to parameter changes, and the qZSI are controlled by finite switching sequence model predictive control (FSS‐MPC). In this paper, a Variable weight coefficient Model Predictive Control (V‐MPC) strategy is proposed. First, based on the optimal scheduling algorithm, according to the priority of the controlled object. The proportioning weights of the global feasible solution and the local optimal solution in the algorithm are coordinated. Then, using the equality‐constraints quadratic programming method, according to the relationship between the system frequency and the reference value, increase the weight of the qZSI algorithm or increase the proportion of VSG control to improve the ability to suppress frequency fluctuations. It can give full play to the short‐term power support role of the virtual synchronous wind turbine. The modeling and testing findings validate the suggested control strategy. When compared to the conventional finite control set model predictive control (FCS‐MPC), the V‐MPC can minimize the big store inductance current ripple and have lower THD in the load currents waveform.

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“…The output results indicate the proper performance of the above system [11]. To cope with harmonic distortions in the power grid and especially MGs, numerous harmonic compensation approaches are presented in the literature [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. For harmonic mitigation, two elements, active power filter and super capacitor, are investigated in [12].…”

Section: Introductionmentioning

confidence: 99%

“…This optimization algorithm can be configured for any degree of harmonic current sharing between DGs. In order to improve the harmonic conditions of the system, the optimization methods of the filter device controller have been investigated in [15][16][17]. The results indicate the appropriate efficiency of the applied methods in each of the filter modules.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of power quality issues for a hybrid AC/DC microgrid based on optimization methods

Khosravi¹,

Echalih

Baghbanzadeh

et al. 2022

IET Renewable Power Gen

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The purpose of this paper is to study the harmonic behavior of hybrid microgrids (MGs). To achieve the desired goal, a modified active power filter (MAPF) and a power filter compensator kit (PFCK) modules have been used to improve the harmonics of the AC part of the system. The main challenge and feature of this research is the optimization of MAPF and PFCK controller gain coefficients hierarchical, using Harris hawk optimization (HHO), grasshopper optimization algorithm (GOA), artificial bee colony (ABC), and differential evolution (DE), respectively. Following, this technique was applied in the three control loops including, voltage and current harmonics, and system controller error to reduce the range of the mentioned harmonics to the permissible range. The method will be interesting considering that the PI and PID tuning is based on parallel feed‐forward. The programmed objective functions include the three components current THD, voltage THD and controller error hierarchically. From the point of view of the MGs hierarchical control, the method presented in this study will be implemented in the second level of hierarchical control. In order to improve the operation of the DC part of the grid, a boost converter module (BCM) has been introduced in the form of a new synchronization scheme. The output of the simulation shows the reduction of the harmonic amplitude of the system by the mentioned modules.

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A novel control approach for harmonic compensation using switched power filter compensators in micro‐grids

Cited by 15 publications

References 44 publications

Parameter Design of Half-Bridge Converter Series Y-Connection Microgrid Grid-Connected Filter Based on Improved PSO-LSSVM

Parameter Design of Half-Bridge Converter Series Y-Connection Microgrid Grid-Connected Filter Based on Improved PSO-LSSVM

Variable weight coefficient MPC control strategy for qZSI‐VSG wind power grid‐connected system

Enhancement of power quality issues for a hybrid AC/DC microgrid based on optimization methods

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