Power Balance Modes and Dynamic Grid Power Flow in Solar PV and Battery Storage Experimental DC-Link Microgrid

Dhar, Rupak Kanti; Merabet, Adel; Al‐Durra, Ahmed; Ghias, Amer M. Y. M.

doi:10.1109/access.2020.3042536

Cited by 21 publications

(11 citation statements)

References 35 publications

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“…For the solar tracking system, the equatorial coordinates must be converted into horizontal coordinates to have more meaning and use by the system. This is done by using ( 7) and (8).…”

Section: B Psa Modified Algorithmmentioning

confidence: 99%

Experimental Verification of the Modified PSA Algorithm

Wang

Munochiveyi

2022

IEEE Access

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Being abundant and non-polluted, solar energy is an increasingly desirable energy source. Growing research is concerned about maximum solar energy acquisition from solar panels, especially in the automatic sun-tracking of the solar panels. This paper presents a modified algorithm based on the "PSA Algorithm" proposed in the 2001. And presents a new automatic solar tracking system with a two-axis is designed based on the algorithm. The PSA modified algorithm is used to calculate the sun's horizontal azimuth and zenith angle combined with time, longitude, latitude, and other information. We designed a prototype mainly composed of a microcontroller, a Global Positioning System (GPS) module, a digital compass, a tilt sensor, a 555 timer, and gates, optical couples, an H-bridge and two stepper motors. Then using the proposed prototype, a series of experiments are conducted in Tianjin City. Measured zenith angle values were collected and recorded based on the PSA modified algorithm and the original PSA algorithm, compared with the actual Zenith Angle of the Sun in Tianjin City. The comparison curves of Zenith Angle show that the measurement accuracy of the modified PSA algorithm is higher than that of the PSA original algorithm.INDEX TERMS automatic solar tracking system, measurement accuracy, PSA modified algorithm, twoaxis tracking method, Zenith angle.

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“…For the solar tracking system, the equatorial coordinates must be converted into horizontal coordinates to have more meaning and use by the system. This is done by using ( 7) and (8).…”

Section: B Psa Modified Algorithmmentioning

confidence: 99%

Experimental Verification of the Modified PSA Algorithm

Wang

Munochiveyi

2022

IEEE Access

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“…To suppress upward and downward fluctuations of the SPGS, the rapid power regulation technology is required to temporarily store and release power to stabilize the power output from the SPGS. Since battery set has the advantages of small size, quick absorption and release of electrical energy and flexible operation, it has considerable potential as a power regulation device for the SPGS [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In general, the control concept for smoothing the output power of SPGS is that the battery energy storage system supplies the difference between the average value and the instantaneous value for the output power of SPGS.…”

Section: Introductionmentioning

confidence: 99%

“…The output from a solar cell array is DC power and the battery set stores power in DC form, so a power conversion interface is needed for integrating solar cell array or battery set into the power grid for DC-AC power conversion . The configuration of SPGS and battery energy storage system can be divided into AC coupling [9][10][11][12] and DC coupling [4], [8], [13][14][15][16]. For the AC coupling configuration, the SPGS and the battery energy storage system (BESS) are respectively connected to the grid.…”

Section: Introductionmentioning

confidence: 99%

“…Small capacity SPGSs or BESS use fewer solar modules or batteries so the DC voltage is lower. A DC-AC power converter with a traditional bridge architecture or multilevel architecture is derived from a buck power converter so the DC bus voltage for the DC-AC power converter must be greater than the peak value of grid voltage [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. A boost power converter (BPC) must be inserted between the DC-AC power converter and the solar cell array or battery set and all power from the solar cell array or battery set must be processed using two power conversion stages.…”

Section: Introductionmentioning

confidence: 99%

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Solar Power Generation System With Power Smoothing Function

Jou

et al. 2022

IEEE Access

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The output power from a solar power generation system (SPGS) changes significantly because of environmental factors, which affects the stability and reliability of a power distribution system. This study proposes a SPGS with the power smoothing function. The proposed SPGS consists of a solar cell array, a battery set, a dual-input buck-boost DC-AC inverter (DIBBDAI) and a boost power converter (BPC). The DIBBDAI combines the functions of voltage boost, voltage buck and DC-AC power conversion. The BPC acts as a battery charger between the solar cell array and the battery set. For the proposed SPGS, the DC power that is provided by the solar cell array or the battery set is converted into AC power through only one power stage. The solar cell array also charges the battery set through only one power stage. This increases the power conversion efficiency for the solar cell array, the battery set and the utility. The battery set is charged/discharged when the output power of the solar cell array changes drastically, in order to smooth the output power from the SPGS. In addition, the DIBBDAI can suppress the leakage current that is induced by the parasitic capacitance of the solar cell array. The proposed power conversion interface increases power efficiency, smooths power fluctuation and decreases leakage current for a SPGS. A hardware prototype is completed to verify the performance of the proposed SPGS.INDEX TERMS solar power generation, power smoothing, buck-boost DC-AC inverter

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“…It is estimated that by converting 60% of conventional vehicles to EVs, there will be an 18% increase in the total electric load on the power grid [1]. In this regard, deployment of energy management systems (EMS) or supervisory control system for smart charging of EVs seems to be necessary to avoid negative effects of uncoordinated and inefficient charging such as voltage deviations and energy loss [3].…”

Section: Introductionmentioning

confidence: 99%

Optimal battery cycling strategies in workplaces with electric vehicle chargers, energy storage systems and renewable energy generation

Toosi

Merabet

Al‐Durra

et al. 2022

IET Renewable Power Gen

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Efficient unit commitment strategy in a modern workplace facilitated with electric vehicle (EV) chargers and energy storage systems requires implementation of optimal battery cycling for both local storage system and electric vehicle batteries. In order to achieve this goal, it is necessary to address the battery health in the energy management strategies of commercial buildings. A fair battery cycling approach that could consider the interests of both parties in a workplace (including the system operator and the EV owners) requires access to detailed information on battery performance and degradation-associated costs. In this study, a detailed investigation is carried out on the optimal battery cycling in a workplace that is facilitated with an EV charging station, energy storage system and renewable energy generation. This is carried out by employment of a tailored unit commitment model that can address the battery health for EVs, individually. This study illustrates how a business owner and the employees that own electric vehicles can benefit from bidirectional battery cycling in an equitable way without compromising their financial interests in the energy market.

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Power Balance Modes and Dynamic Grid Power Flow in Solar PV and Battery Storage Experimental DC-Link Microgrid

Cited by 21 publications

References 35 publications

Experimental Verification of the Modified PSA Algorithm

Experimental Verification of the Modified PSA Algorithm

Solar Power Generation System With Power Smoothing Function

Optimal battery cycling strategies in workplaces with electric vehicle chargers, energy storage systems and renewable energy generation

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