One Cycle Control for Battery Connected Standalone Photovoltaic Systems for DC Loads

Neto, Joao T. de Carvalho; Salazar, Andrés O.; Lock, Alberto Soto; Fonseca, Diego A. M.

doi:10.1109/tla.2018.8447365

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…OCC technique was used for controlling the charging and discharging current of batteries and to control the microgrid DC bus voltage. 17 But the major drawback is the need for more than one switching converter to regulate the DC bus voltage.…”

Section: Introductionmentioning

confidence: 99%

“…Most studies in the area of OCC focused on maximum power point tracking (MPPT) regulation and power factor correction. OCC technique was used for controlling the charging and discharging current of batteries and to control the microgrid DC bus voltage 17 . But the major drawback is the need for more than one switching converter to regulate the DC bus voltage.…”

Section: Introductionmentioning

confidence: 99%

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One‐cycle controlled standalone solar water pumping system

Nisha

Sheela

2022

Energy Storage

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This paper addresses with the development of an effective standalone solar photovoltaic (PV)-fed brushless DC (BLDC) motor water pumping system with battery storage. The system guarantees continuous water supply in all operating environments. Boost converter is selected as the DC-DC converter linking the PV array and voltage source inverter. Maximum power point tracking is achieved through perturb and observe algorithm. The bidirectional buck-boost converter is intended for the transfer of power between the battery and solar panels. Charging and discharging control of battery is achieved through onecycle control of bidirectional converter which provides quick response and zero steady-state error. The BLDC motor works with electronic commutation providing smooth and fundamental frequency operation of the voltage source inverter. Simple battery management system using digital integrated circuits for controlling the power transfer amidst the solar panel and the load enhances the system efficiency. The performance of the proposed system is checked for various operating modes like normal conditions, discharging conditions and charging conditions of the battery, and is validated through simulation results.Comparison with existing topologies proves the efficacy of the system under all operating conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One‐cycle controlled standalone solar water pumping system

Nisha

Sheela

2022

Energy Storage

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“…OCC-based technique guarantees faster response and better source and load perturbation rejection (Binitha and Kumar, 2013) compared to systems using conventional PWM control and is proved through obtained results. Most studies in the area of OCC focused on power factor correction and DC Microgrid voltage regulation (de Carvalho Neto et al, 2018). Fewer works in literature dealt with the application of OCC with MPPT algorithms.…”

Section: Introductionmentioning

confidence: 99%

Metaheuristic Algorithm Based Maximum Power Point Tracking Technique Combined With One Cycle Control For Solar Photovoltaic Water Pumping Systems

Nisha

2022

Front. Energy Res.

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Solar photovoltaic technology has become eminent in the world because of its clean and abundant nature and can be effectively used for water pumping applications. A maximum power point tracking method is indispensable to achieve the best benefit from photovoltaic systems. Conventional maximum power tracking methods become successful only under uniform irradiance conditions and fail to track the maximum power under partial shading conditions (PSC). Hence, nature-inspired metaheuristic algorithms were proposed to track the optimum power under varying environmental conditions. This study proposes a method for improving the performance of the nature-inspired maximum power point tracking algorithms by using a nonlinear control technique called one cycle control. Based on the duty cycle obtained from the tracking algorithm the one cycle control technique generates pulses for the DC–DC converter, which is connected to a brushless DC motor pump system through a voltage source inverter. The performance of the proposed system under various PSCs is validated using the Cuckoo search, particle swarm optimization, and grey wolf algorithms. Simulation results for various shading patterns prove the supremacy of the system with respect to convergence speed, tracking efficiency, robustness, steady-state oscillations at maximum power point, and initial exploration oscillations in comparison with systems without one cycle control. In addition, the introduction of a KY converter as a DC–DC converter reduces the output voltage ripple in the system. Thus, the proposed system with one cycle control overcomes the disadvantages of the existing methods and can be effectively utilized for water pumping applications.

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“…One-cycle control was proposed by K. M. Smedley in 1991 [16]. Since then, it has become increasingly popular in controlling single-phase and three-phase alternating current/direct current (AC/DC) pulse-width modulation (PWM) converters [17]- [20]. When OCC is used in boost-type PWM rectifiers, the input current is automatically forced to be in phase with the grid voltage in the sinusoidal waveform with no requirement for the phase-locked loop (PLL), grid voltage sensors and frame transformation [21]- [23].…”

Section: Introductionmentioning

confidence: 99%

Voltage Balancing Control of Cascaded Single-Phase VIENNA Converter Based on One Cycle Control With Unbalanced Loads

Wang

Cheng

et al. 2020

IEEE Access

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A research study on a type of cascaded single-phase VIENNA converter (CSVC) is presented in this paper. And a type of DC voltage balancing control strategy for each cascaded module of the CSVC based on improved one-cycle control (I-OCC) is proposed, in which voltage balancing signals are added to the conventional OCC (C-OCC) control loop to cause a difference in the modulation signals of each of the cascaded modules, so that the DC voltages of all modules can be quickly balanced under unbalanced loads. At the same time, the average modulation wave maintains a constant value so that the CSVC achieves a unity power factor operation. The operating principle of the I-OCC strategy is discussed in detail, and the corresponding mathematical relationships are derived. In the proposed strategy, the ability to adjust the DC voltages is also analyzed. Finally, the simulation and experiment results are provided to verify the validity and feasibility of this I-OCC-based voltage balancing control strategy. The control strategy proposed by this paper is also applicable to all other cascaded unidirectional rectifiers.INDEX TERMS Cascaded single-phase VIENNA converter (CSVC), multilevel converter, unbalanced loads, one cycle control (OCC), voltage balancing control.

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One Cycle Control for Battery Connected Standalone Photovoltaic Systems for DC Loads

Cited by 6 publications

References 13 publications

One‐cycle controlled standalone solar water pumping system

One‐cycle controlled standalone solar water pumping system

Metaheuristic Algorithm Based Maximum Power Point Tracking Technique Combined With One Cycle Control For Solar Photovoltaic Water Pumping Systems

Voltage Balancing Control of Cascaded Single-Phase VIENNA Converter Based on One Cycle Control With Unbalanced Loads

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