Comparison of the performance of maximum power point tracking schemes applied to single-stage grid-connected photovoltaic systems

Jain, Sachin; Agarwal, Vivek

doi:10.1049/iet-epa:20060475

Cited by 339 publications

(139 citation statements)

References 12 publications

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“…P1 curvature is exploited, if atmospheric environments remains nearly persistent, a change of ΔV will transport the working location to B and consequently disturbance will be retreated due to a reduction in power. Perturb and Observe (P&O) is one of the most diffused MPPT algorithms, whose tracking response is independent on the environmental conditions, however, its implementation requires a voltage and a current sensor, increasing the cost and complexity [6][7][8][9][10]. When in operation, the P&O algorithm estimates the PV output power and perturbs the converter duty cycle (increasing or decreasing it).…”

Section: Perturb and Observe Methodsmentioning

confidence: 99%

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Different Maximum Power Point Tracking Methods and their study for different ambient conditions

Husain¹,

H.Faridi²,

Khan³

et al. 2017

IJET

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Abstract-This article brings together a study of important maximum peak power tracking (MPPT) practices used for photovoltaic systems. Different techniques were taken from various articles on MPPT and are contemplated and compared. This paper offers the Simulink PV system model using P&O (Perturb and Observe) method of MPPT and its characteristics for different varying ambient conditions. Keyword-MPPT, PV, P&O, PV array I. INTRODUCTION Chasing the maximum power point (MPP) on the P-V curve of a photovoltaic (PV) array is typically an indispensable part of a PV system. The two main problems with PV source is its meager efficiency (almost less than 19%) and its output power variation due to change in atmospheric conditions like insolation and temperature. Apart from this, its nonlinear I-V characteristic compels the user to use something to chase the MPP. MPP is an exceptional point on the P-V curve with the associated power (at a particular temperature and insolation) having maximum value. This MPP also varies with the atmospheric condition. To elicit maximum power, MPPT is done so as to track the MPP. Until now different MPPT schemes have been used but most of them are derived from P&O method [1,3,5,6]. II. MAXIMUM POWER POINT (MPP)A PV array or generator will have one point on its current/voltage characteristic that corresponds to maximum power output. This is referred to as the maximum power point or maximum power tip or MPP. Figure 1.1 shows a maximum power tip for certain values of temperature and irradiation. It can be observed from the figure that the maximum power tip lies near the knee-point of the I-V curve. III.DIRECT COUPLING When a PV unit is coupled to a load directly, the PV module's operating point will be at the intersection of its I-V curve and load line, which is the I-V relationship of load. For example, a resistive load gives a straight line slope of 1/R as presented in Figure 1 In other hand, the load impedance orders the operation state of PV unit. In common, this operating state lies rarely at the MPP, consequently not producing the maximum power. A review demonstrates that majority of direct-coupled framework uses a mere31% of the peak PV capability [2,4,7,16]. A PV set is commonly oversized to pay off for low power delivered during winter season. This incongruousness of PV set and load necessitates added over-sizing of the PV set and accordingly upsurges the whole arrangement cost. For exploiting the PV set, the incoming sun's energy must be converted to electricity with the highest efficiency, done when the photovoltaic module operates on the maximum power point. Nevertheless, since this working point is sturdily affected due to solar fallout and temperature intensities, it may arbitrarily fluctuate on the I-V curl (illustrated Figure 1.4). Thus, to dynamically set the MPP as an action point for a extensive range of solar radiation and temperature, specific circuits, known in the literature by Maximum Power Point Trackers (MPPT),are employed. If properly adapted, MPPT can quote exc...

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Section: Perturb and Observe Methodsmentioning

confidence: 99%

“…To elicit maximum power, MPPT is done so as to track the MPP. Until now different MPPT schemes have been used but most of them are derived from P&O method [1,3,5,6]. …”

mentioning

confidence: 99%

Different Maximum Power Point Tracking Methods and their study for different ambient conditions

Husain¹,

H.Faridi²,

Khan³

et al. 2017

IJET

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show abstract

“…If the value of power isdecrease then the perturbation going to reverse direction and adjust the value of Vpv. So by doing this changes it try to make oscillate the power near to its MPP [3].…”

Section: A Perturb and Observationmentioning

confidence: 99%

Grid integrated PV system with different controlling MPPT techniques

2017

IJAERD

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“…The Perturb and Observe (P&O) method is considered the most common method due to its simplicity, and ease implementation [3]. Many types of research investigate the nonlinear behavior of the PV array [2] and associated grid-connected inverters [4]. Despite the simplicity of the classical P&O method, it has two drawbacks.…”

Section: Introductionmentioning

confidence: 99%

PV Solar-Optimal Maximum Power Search using a Modified P&O Technique

Ebrahim¹,

Sharaf²,

Atallah³

et al. 2017

EJERS

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Abstract-Smart Grid-PV system interface requires power electronic converter interface and a robust optimal controller to ensure maximum solar energy utilization. This paper presents a new Controller based on an optimized search algorithm for maximum power point tracking controller performance using a modified Perturb and Observe P&O Algorithm for a smart grid-connected PV DC-AC interface system. The modified P & O method is based on dividing the change of the power into three distinct zones with assigned zone-duty cycle ratio of the Chopper converter (D) has an initial preset value. The feasibility of the proposed method is easily implemented using proportional plus integral and fuzzy logic controllers. The controllers are assumed to control the active output power through adjusting of the DC bus voltage as well as the reactive power given to the AC smart grid network. Digital simulation results of a comparison with the conventional P&O approach reflect the fast conversion and dynamic superiority of the new algorithm even under both uniform and partial shading conditions. Furthermore, the active and reactive output powers are regulated at the inverter interface with the smart grid.

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Comparison of the performance of maximum power point tracking schemes applied to single-stage grid-connected photovoltaic systems

Cited by 339 publications

References 12 publications

Different Maximum Power Point Tracking Methods and their study for different ambient conditions

Different Maximum Power Point Tracking Methods and their study for different ambient conditions

Grid integrated PV system with different controlling MPPT techniques

PV Solar-Optimal Maximum Power Search using a Modified P&O Technique

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