A constant voltage maximum power point tracking method for solar powered systems

Aganah, Kennedy A.; Leedy, Aleck W.

doi:10.1109/ssst.2011.5753790

Cited by 43 publications

(19 citation statements)

References 16 publications

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“…By changing the irradiation under PSCs, the short-circuit current and open-circuit voltage values used in Equation (13) are updated with Equations (14) and (15), respectively. So, the new reference voltage should be calculated with updated Equation (18). In Figure 23b, the experimental result for the scenario of shadowing depicted in Figure 2b for an irradiation of 800 W/m 2 is shown.…”

Section: Resultsmentioning

confidence: 99%

Implementing a Novel Hybrid Maximum Power Point Tracking Technique in DSP via Simulink/MATLAB under Partially Shaded Conditions

et al. 2016

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This paper presents a hybrid maximum power point tracking (MPPT) method to detect the global maximum power point (GMPP) under partially shaded conditions (PSCs), which have more complex characteristics with multiple peak power points. The hybrid method can track the GMPP when a partial shadow occurs either before or after acquiring the MPP under uniform conditions. When PS occurs after obtaining the MPP during uniform conditions, the new operating point should be specified by the modified linear function, which reduces the searching zone of the GMPP and has a significant effect on reducing the reaching time of the GMPP. Simultaneously, the possible MPPs are scanned and stored when shifting the operating point to a new reference voltage. Finally, after determining the possible location of the GMPP, the GMPP is obtained using the modified P&O. Conversely, when PS occurs before obtaining the MPP, the referenced MPP should be specified. Thus, after recognizing the possible location of the GMPP, the modified P&O can be used to obtain the GMPP. The simulation and experimental implementations for the proposed algorithm are performed with different scenarios of shadowing under different irradiations, which clearly indicate that the proposed method is robust and has a fast tracking speed. Moreover, this work presents the load sizing method for PSCs to avoid controller failure when detecting the GMPP. Additionally, in this paper, the user-friendly method for programming the digital signal processing (DSP) via Simulink/MATLAB is presented in detail.

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Section: Resultsmentioning

confidence: 99%

Implementing a Novel Hybrid Maximum Power Point Tracking Technique in DSP via Simulink/MATLAB under Partially Shaded Conditions

et al. 2016

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“…The High step-up isolated converter has played a vital role especially in renewable solar PV energy applications. The conventional boost converters due to its high boost ratio will have high switching losses and high voltage stress across the switch [10]. The high duty cycle of the converter is reduced using the capacitor switching technology.…”

Section: Modeling Of Proposed Convertermentioning

confidence: 99%

Centralized Solar PV Systems for Static Loads Using Constant Voltage Control Method

Alagammal¹,

Prabha²,

Aarthy³

2016

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The alternative energy resources, like solar, are always complementary due to environmental changes. Energy generation with the sources such as solar and wind is gaining importance and of that photovoltaic conversion is the main focus of researches due to its promising potential as the electrical source. This paper presents the constant voltage method of control where the output of the converter is maintained constant irrespective of the variations in the irradiance with the high step-up isolated efficient single switch DC-DC converter for the solar PV systems. Constant voltage method of control uses the array of photovoltaic systems as its energy source. The output of the Solar PV systems is nonlinear and has its dependency on temperature and irradiance by which the panel voltage and current varies with the variation in irradiance. Constant voltage control method always operates in such a way that the converter voltage is tried to be maintained constantly to the reference voltage which is set by the user. The system used here utilizes high step single switch isolated DC-DC converter and monitors the voltage continuously by varying the duty cycle to maintain the converter voltage always constant. As a way of improving the performance, both the open and closed loop analysis is done where the closed loop analysis uses the PI controller for its performance. The model is implemented in MATLAB and it accepts the irradiance as the input and outputs the constant voltage from the converter and the feasibility of the proposed converter topology is confirmed with experimental results of the prototype model.

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“…However, there is always a unique point on the V-I or V-P curve called the maximum power point (MPP). This point is not known on these characteristics, but it can be located by MPPT algorithms categorized generally as follows: Perturbation and Observation (P&O) algorithms [3]- [5], Incremental Conductance (InC) algorithm [6][7][8], Constant Current (CC) or Voltage (CV) algorithm [9]- [10] and other algorithms such as Fuzzy Logic (FL) algorithm [11]- [12], Artificial Neural Network (ANN) algorithm [13] and the Particle Swarm Optimization (PSO) algorithm [14][15]. These existing algorithms have several advantages and disadvantages concerned with simplicity, convergence speed, extra hardware and cost.…”

Section: Introductionmentioning

confidence: 99%

Maximum Power Point Tracking Using an Adaptive Perturbation and Observation Algorithm For A Grid-Connected Solar Photovoltaic System

Huynh¹,

Dunnigan²

2015

IJGDC

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A constant voltage maximum power point tracking method for solar powered systems

Cited by 43 publications

References 16 publications

Implementing a Novel Hybrid Maximum Power Point Tracking Technique in DSP via Simulink/MATLAB under Partially Shaded Conditions

Implementing a Novel Hybrid Maximum Power Point Tracking Technique in DSP via Simulink/MATLAB under Partially Shaded Conditions

Centralized Solar PV Systems for Static Loads Using Constant Voltage Control Method

Maximum Power Point Tracking Using an Adaptive Perturbation and Observation Algorithm For A Grid-Connected Solar Photovoltaic System

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