Benchmarking of Constant Power Generation Strategies for Single-Phase Grid-Connected Photovoltaic Systems

Sangwongwanich, Ariya; Yang, Yongheng; Blaabjerg, Frede; Wang, Huai

doi:10.1109/tia.2017.2740380

Cited by 120 publications

(76 citation statements)

References 32 publications

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“…2) at the cost of increased power losses (because of power variations) due to the high dP pv /dv pv in that region [6]. Moreover, the PV system may go into instability in that case [34]. Hence, in this paper, the AAPC operating point is regulated at the left-side of the MPP, which is also enabled by the double-stage configuration (i.e., Fig.…”

Section: Absolute Active Power Controlmentioning

confidence: 98%

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Pursuing Photovoltaic Cost-Effectiveness: Absolute Active Power Control Offers Hope in Single-Phase PV Systems

Yang

Koutroulis

Sangwongwanich

et al. 2017

IEEE Ind. Appl. Mag.

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Abstract-Countries with considerable PhotoVoltaic (PV) installations are facing a challenge of overloading their power grid during peak-power production hours if the power infrastructure remains the same. To address this, regulations have been imposed on PV systems, where more active power control should be flexibly performed. As an advanced control strategy, the Absolute Active Power Control (AAPC) can effectively solve the overloading issues by limiting the maximum possible PV power to a certain level (i.e., the power limitation), and also benefit the inverter reliability due to the reduction in the thermal loading of the power devices. However, its feasibility is challenged by the associated energy losses. An increase of the inverter lifetime and a reduction of the energy yield can alter the cost of energy, demanding an optimization of the power limitation. Therefore, aiming at minimizing the Levelized Cost Of Energy (LCOE), the power limit is optimized for the AAPC strategy in this paper. The optimization method is demonstrated on a 3-kW singlephase PV system considering a real-field mission profile (i.e., solar irradiance and ambient temperature). The optimization results have revealed that superior performance in terms of LCOE and energy production can be obtained by enabling the AAPC strategy, compared to the conventional PV inverter operating only in the maximum power point tracking mode. In the presented case study, the minimum of the LCOE is achieved for the PV system when the power limit is optimized to a certain level of the designed maximum feed-in power (i.e., 3-kW). In addition, the LCOE-based analysis method can be used in the design of PV inverters considering long-term mission profiles.

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Section: Absolute Active Power Controlmentioning

confidence: 98%

“…MPPT control has been adopted from the viewpoints of simplicity and cost-effectiveness [19], [34]. It can be observed in Fig.…”

Section: Absolute Active Power Controlmentioning

confidence: 99%

Pursuing Photovoltaic Cost-Effectiveness: Absolute Active Power Control Offers Hope in Single-Phase PV Systems

Yang

Koutroulis

Sangwongwanich

et al. 2017

IEEE Ind. Appl. Mag.

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“…Once the available power P avai is estimated, the slave PV string has to regulate its output power in order to provide the total extracted power (from both PV strings) P pv according to (1). As discussed in [8], [13], the output power of the PV string can be regulated below the MPP using the CPG strategy. From the Power-Voltage (P-V) characteristic of the PV arrays in Fig.…”

Section: B Compensation Of the Output Power -Cpg Operation For The Smentioning

confidence: 99%

“…6). It has been shown in [13] that the operating region at the right side of the MPP (i.e., at C in Fig. 6) may introduce unstable operation during a fast decreasing irradiance condition (e.g., caused by passing clouds).…”

Section: B Compensation Of the Output Power -Cpg Operation For The Smentioning

confidence: 99%

Delta power control strategy for multi-string grid-connected PV inverters

Sangwongwanich

Yang

Blaabjerg

et al. 2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

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With a still increasing penetration level of gridconnected PV systems, more advanced active power control functionalities have been introduced in certain grid regulations. A delta power constraint, where a portion of the active power from the PV panels is reserved during operation, is required for grid support (e.g., during frequency deviation). In this paper, a costeffective solution to realize delta power control for grid-connected PV systems is presented, where the residential/commercial multistring PV inverter configuration is adopted. This control strategy is a combination of Maximum Power Point Tracking (MPPT) and Constant Power Generation (CPG) modes. In this control scheme, one PV string operating in the MPPT mode estimates the available power, while the other PV strings regulate the total PV power by the CPG control strategy in such a way that the delta power constraint for the entire PV system is achieved. Simulations and experiments have been performed on a 3-kW single-phase grid-connected PV system. The results have confirmed the effectiveness of the delta power control strategy, where the power reserve according to the delta power constraint is achieved under several operating conditions. Index Terms-Active power control, reserved power control, maximum power point tracking, constant power generation control, PV systems, grid-connected power converters.

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“…For instance, BCC reported that high PV penetration, Overloaded the parts of Northern Ireland's grid in High Solar Irradiation Day [5]. So to further cope with high PV installation, the Distributed System Operators are forced to expand Transmission and Distribution line or Battery Storage Requirement.…”

Section: Introductionmentioning

confidence: 99%

Active Power Control of PV System in MPPT and CPG Mode

Zala¹,

Pandya²,

Odedra³

et al.

Kalpa Publications in Engineering

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Integration of the renewable source in the existing distribution network under varying load profile is a daunting task. This paper presents the active power control of the PV system. This PV renewable source availability and load demand in the distribution network are mismatching. The extraction of maximum PV power is enhanced with Perturb & Observe algorithm. In this paper the Maximum Power Point Tracking (MPPT) algorithm is coordinated with Constant Power Generation (CPG) control to address the high PV penetration issue. The control algorithm is implemented in MATLAB Simulink environment. The efficacy of proposed technique is tested for variation in temperature, and irradiation level. The simulation results are justified the active power control in dual mode of operation MPPT and CPG to mitigate high PV penetration issue.

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Benchmarking of Constant Power Generation Strategies for Single-Phase Grid-Connected Photovoltaic Systems

Cited by 120 publications

References 32 publications

Pursuing Photovoltaic Cost-Effectiveness: Absolute Active Power Control Offers Hope in Single-Phase PV Systems

Pursuing Photovoltaic Cost-Effectiveness: Absolute Active Power Control Offers Hope in Single-Phase PV Systems

Delta power control strategy for multi-string grid-connected PV inverters

Active Power Control of PV System in MPPT and CPG Mode

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