FPGA Implementation of MPPT Using Variable Step-Size P&amp;O Algorithm for PV Applications

Khaehintung, N.; Wiangtong, Theerayod; Sirisuk, P.

doi:10.1109/iscit.2006.340033

Cited by 87 publications

(33 citation statements)

References 4 publications

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“…However, number of researchers finds various techniques; they are categorized in order to conventional techniques and artificial intelligence techniques [4]. The most conventional useful techniques are Fractional and [5], Hill Climbing (HC) [5][6], Perturb and Observe (P&O) [4], Incremental Conductance (IncCond) [2], [8], and the most usable artificial intelligent techniques are Fuzzy Logic [9][10] and Neural Network [11] methodologies.…”

Section: Mppt Methodsmentioning

confidence: 99%

“…The most conventional useful techniques are Fractional and [5], Hill Climbing (HC) [5][6], Perturb and Observe (P&O) [4], Incremental Conductance (IncCond) [2], [8], and the most usable artificial intelligent techniques are Fuzzy Logic [9][10] and Neural Network [11] methodologies. Table I, compares these different methods by focusing on specific criteria.…”

Section: Mppt Methodsmentioning

confidence: 99%

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A Novel Algorithm for MPPT for PV Application System by use of Direct Control Method

Gaikwad¹,

Chavan²

2015

IJCA

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Photovoltaic (PV) cell converts sunrays into electrical energy, which has non-linear I-V characteristics. For extracting maximum power from photovoltaic (PV) array for varying environmental conditions, it is necessary to use MPPT tracker. The MPPT consists of DC-DC converter and MPPT algorithm, DC-DC converter is inserted between solar panel and load or battery. The task of MPPT tracker is to match input impedance of the converter and it is equals to the equivalent output impedance of the solar panel to achieve unique point (MPP) where maximum power extracted.The used TL598 based DC-DC converter operates with defined MPPT algorithm. The DC-DC converter output power is controlled by varying its duty cycle to operating at knee voltage level. The novel algorithm is used for efficiently extracts the maximum output power from PV panel with the use of direct control method. The sensing of input voltage and current parameters, which are processed based on P&O algorithm. After finding of MPP, it latched and stops searching and only continuously monitors source voltage. When any change in environmental conditions, the MPPT algorithm again starts searching MPP unique point which is totally based on source voltage information. This approach gets a stable output power at MPP. The algorithm has developed for direct control of duty cycle for DC-DC converter based on TL598. This is simple structure; obtain higher efficiency and reliability as compared to standard methods. The MPPT has capability to propose the technique which has been verified experimentally with a 75-W solar panel for different insolation (incident solar radiation) level and under large signal insolation of level changes. General TermsPV Cell Operating point, Algorithm.

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Section: Mppt Methodsmentioning

confidence: 99%

Section: Mppt Methodsmentioning

confidence: 99%

A Novel Algorithm for MPPT for PV Application System by use of Direct Control Method

Gaikwad¹,

Chavan²

2015

IJCA

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“…The duty ratio of the boost switch is determined by the MPPT control and the duty ratio of the boost switch is determined by adding an additional duty for the dc link voltage balance . The additional duty for current balance is (8) where is the integral control gain of the dc link voltage balancing controller.…”

Section: B Three-level Boost Converter and DC Link Voltage Balancingmentioning

confidence: 99%

Three-Phase Photovoltaic System With Three-Level Boosting MPPT Control

Kwon

Nam

2008

IEEE Trans. Power Electron.

199

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Abstract-This paper proposes a three-phase photovoltaic (PV) system with three-level boosting maximum power point tracking (MPPT) control. A simple MPPT control using a power hysteresis tracks the maximum power point (MPP), giving direct duty control for the three-level boost converter. The three-level boost converter reduces the reverse recovery losses of the diodes. Also, a weighted-error proportional and integral (PI) controller is suggested to control the dc link voltage faster. All algorithms and controllers were implemented on a single-chip microprocessor. Experimental results obtained on a 10-kW prototype show high performance, such as an MPPT efficiency (MPPT effectiveness) of 99.6%, a near-unity power factor, and a power conversion efficiency of 96.2%.Index Terms-Maximum power point tracking (MPPT), photovoltaic (PV) system, three-level boost converter.

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“…An adaptive MPPT algorithm for a field-programmable gate array has been proposed in [8]. This adjustable algorithm is based on an improved P&O method that does not need external sensory units.…”

Section: Introductionmentioning

confidence: 99%

“…However, this adjustment can be made through the duty ratio of the converter such as described in [8]. The experimental results reported in the recent technical literature show that the adaptive algorithm has better performance than conventional P&O techniques in terms of dynamics and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Optimized Adaptive Perturb and Observe Maximum Power Point Tracking Control for Photovoltaic Generation

et al. 2015

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Abstract:The power extracted from PV arrays is usually maximized using maximum power point tracking algorithms. One of the most widely used techniques is the perturb & observe algorithm, which periodically perturbs the operating point of the PV array, sometime with an adaptive perturbation step, and compares the PV power before and after the perturbation. This paper analyses the most suitable perturbation step to optimize maximum power point tracking performance and suggests a design criterion to select the parameters of the controller. Using this proposed adaptive step, the MPPT perturb & observe algorithm achieves an excellent dynamic response by adapting the perturbation step to the actual operating conditions of the PV array. The proposed algorithm has been validated and tested in a laboratory using a dual input inductor push-pull converter. This particular converter topology is an efficient interface to boost the low voltage of PV arrays and effectively control the power flow when input or output voltages are variable. The experimental results have proved the superiority of the proposed algorithm in comparison of traditional perturb & observe and incremental conductance techniques.

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FPGA Implementation of MPPT Using Variable Step-Size P&O Algorithm for PV Applications

Cited by 87 publications

References 4 publications

A Novel Algorithm for MPPT for PV Application System by use of Direct Control Method

A Novel Algorithm for MPPT for PV Application System by use of Direct Control Method

Three-Phase Photovoltaic System With Three-Level Boosting MPPT Control

Optimized Adaptive Perturb and Observe Maximum Power Point Tracking Control for Photovoltaic Generation

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