Hybrid Control Scheme for Photovoltaic Microinverter With Adaptive Inductor

Kan, Jiarong; Wu, Yifei; Tang, Yu; Xie, Shaojun; Jiang, Lin

doi:10.1109/tpel.2018.2884639

Cited by 6 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High efficiency and miniaturized inverters are required to meet these needs. Microinverter based approach is an optimal technique for BIPV applications [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Single‐stage microinverter with current sensorless control for BIPV system

Mathew

Naidu

Wang

et al. 2021

IET Renewable Power Gen

View full text Add to dashboard Cite

Building Integrated Photovoltaic (BIPV) microinverter system needs lower component counts and high efficiency at low power levels. In this context, this paper proposes a singlephase Transformerless Single-stage Buck-Boost Microinverter with sensorless control for the Grid-integrated BIPV system. The current estimation strategy is used to control the PV system, which reduces the costs and volume of the system. The leakage current of the system is reduced within the limits. It operates at a high level of efficiency, using an optimized number of active and passive components. In the absence of shoot-through problems, reliability is high for the proposed topology. MATLAB/Simulink simulation with a laboratory experimental setup for the proposed inverter for the First Solar BIPV module is designed to validate the results. Finally, the proposed inverter was compared to different Buck-Boost inverters at a power level of 70 W.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

“…High efficiency and miniaturized inverters are required to meet these needs. Microinverter based approach is an optimal technique for BIPV applications [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Single‐stage microinverter with current sensorless control for BIPV system

Mathew

Naidu

Wang

et al. 2021

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…In some PV system with AC-module architecture, a DC-DC converter, known as power optimizer, is employed beside or merged in each microinverter to perform module-level MPPT [16], [17]. More than 55% of domestic PV systems in the USA utilized various combinations of local power optimizer and microinverter, known as module-level power electronics (MLPE), as one of the fastest growing markets in the solar industry in 2014 [18].…”

Section: Introductionmentioning

confidence: 99%

Domestic PV System with Feedback Linearization-based Control Strategy for Module-level MPPT under Partial Shading Condition

Toodeji

Aghaei

2021

Journal of Modern Power Systems and Clean Energy

View full text Add to dashboard Cite

A partial shading condition can adversely affect the energy conversion efficiency of domestic photovoltaic (PV) systems. Connecting each PV module to a microinverter and performing module-level maximum power point tracking (MPPT) are proposed as promising solutions. In this paper, a feedback linearization-based control strategy is designed for the nonlinear system by a novel straightforward approach. The obtained nonlinear control law can independently govern each microinverter, providing module-level MPPT for PV modules without DC optimizer. Moreover, PV modules can be easily connected or disconnected due to the lug-and-play ability of the proposed controller. As a result, the proposed PV system can be easily maintained and extended even by non-expert users. Moreover, any module failure in the proposed PV system can be tolerated without impacts on the normal operation of other PV modules. The advantages of the proposed control strategy are verified by the simulation of a test PV system in MATLAB/Simulink under various partial shading conditions as well as adding or removing PV modules.

show abstract

“…The main drawback of those solutions is the use of several inductors and capacitors, which reduce both power density and efficiency. Other approach consist of using converters with galvanic isolation [14,16,[23][24][25][26][27][28], where the main concerns are the voltage and current stress on the power devices and soft switching capability, but for a well-designed isolated converter, high efficiency and voltage-conversion-ratio are achievable with low stress on the switching devices [29].…”

Section: Introductionmentioning

confidence: 99%

“…The dual active bridge (DAB) converter is one of the most promising topologies for PV applications because it provides galvanic isolation, which decouples the source and load grounds improving the safety of the PV installation [30]. Moreover, the DAB converter could provide a high voltage-conversion ratio based on the transformer turns ratio, and soft switching is achievable to reduce voltage and current stress on the switching devices, providing also high power density due to the use of a high-frequency transformer (HFT) [23,[31][32][33]. In the literature, the DAB converter has been used in battery energy storage systems (BESS) [34][35][36], solid-state transformers [37][38][39] and fuel cell applications [40].…”

Section: Introductionmentioning

confidence: 99%

Design Method of Dual Active Bridge Converters for Photovoltaic Systems with High Voltage Gain

et al. 2020

View full text Add to dashboard Cite

In this paper, a design method for a photovoltaic system based on a dual active bridge converter and a photovoltaic module is proposed. The method is supported by analytical results and theoretical predictions, which are confirmed with circuital simulations. The analytical development, the theoretical predictions, and the validation through circuital simulations, are the main contributions of the paper. The dual active bridge converter is selected due to its high efficiency, high input and output voltages range, and high voltage-conversion ratio, which enables the interface of low-voltage photovoltaic modules with a high-voltage dc bus, such as the input of a micro-inverter. To propose the design method, the circuital analysis of the dual active bridge converter is performed to describe the general waveforms derived from the circuit behavior. Then, the analysis of the dual active bridge converter, interacting with a photovoltaic module driven by a maximum power point tracking algorithm, is used to establish the mathematical expressions for the leakage inductor current, the photovoltaic current, and the range of operation for the phase shift. The design method also provides analytical equations for both the high-frequency transformer equivalent leakage inductor and the photovoltaic side capacitor. The design method is validated through detailed circuital simulations of the whole photovoltaic system, which confirm that the maximum power of the photovoltaic module can be extracted with a correct design of the dual active bridge converter. Also, the theoretical restrictions of the photovoltaic system, such as the photovoltaic voltage and power ripples, are fulfilled with errors lower than 2% with respect to the circuital simulations. Finally, the simulation results also demonstrate that the maximum power point for different environmental conditions is reached, optimizing the phase shift factor with a maximum power point tracking algorithm.

show abstract

Hybrid Control Scheme for Photovoltaic Microinverter With Adaptive Inductor

Cited by 6 publications

References 41 publications

Single‐stage microinverter with current sensorless control for BIPV system

Single‐stage microinverter with current sensorless control for BIPV system

Domestic PV System with Feedback Linearization-based Control Strategy for Module-level MPPT under Partial Shading Condition

Design Method of Dual Active Bridge Converters for Photovoltaic Systems with High Voltage Gain

Contact Info

Product

Resources

About