A New Control Strategy for Improving Weighted Efficiency in Photovoltaic AC Module-Type Interleaved Flyback Inverters

Kim, Young‐Ho; Ji, Yongsung; Kim, Jun-Gu; Jung, Yong-Chae; Won, Chung-Yuen

doi:10.1109/tpel.2012.2226753

Cited by 124 publications

(52 citation statements)

References 19 publications

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“…This stored energy is transferred to the secondary of the transformer and recycle the energy, so, by using the active clamp circuit in fly back micro inverter, it helps to protect converter and also improve the overall efficiency of the system. [7,9,10] …”

Section: Figure 5: Active Clamp Circuit For Fly Back Convertermentioning

confidence: 99%

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Modeling and Simulation of Microinverter with Flyback Converter for Grid Connected PV Systems

Deshpande¹

2017

IJEEER

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Section: Figure 5: Active Clamp Circuit For Fly Back Convertermentioning

confidence: 99%

“…The switching frequency of the switches (MOSFET) is high and switching is given by SPWM technique. [7,9] …”

Section: Unfolding Bridge or Single Phase Bridge Invertermentioning

confidence: 99%

Modeling and Simulation of Microinverter with Flyback Converter for Grid Connected PV Systems

Deshpande¹

2017

IJEEER

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“…However, there are a lot of improvements which can be made by converter efficiency models in real-time control. For example, in [13], a new control method was proposed for an interleaved fly-back converter to improve the efficiency on the low power range. The variable converter efficiency can be used as well to optimize the efficiency of a microgrid if there exist two identical energy storage elements and corresponding converters as stated in [14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Dynamic Efficiency in the DC Microgrid Power Balance

Sechilariu

Locment

2017

Energies

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This work aims to enhance the ability of a direct current (DC) microgrid to guarantee the power supply without interruptions by considering the dynamic efficiency of each power converter in the power balance. Previous works show that the converter efficiency varies according to the instant power. If the variable efficiency of the converters in the microgrid is not considered, some extra power must be considered to compensate the losses in the power balance. However, this leads to a waste of available energy and unnecessary load shedding. The work presented here includes the power converters' dynamic efficiencies in the control of a DC microgrid to improve its performance. MATLAB/Simulink simulations were carried out and the results show that the dynamic efficiency can reduce the load shedding and improve the total DC microgrid efficiency.

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“…Control scheme adopted in this paper is the average current mode control [7], because of its advantages compared with the voltage mode control. To regulate the output voltage, Pulse-Width Modulation (PWM) is necessary, which adjust duty Cycle to obtain the desired voltage output.…”

Section: Introductionmentioning

confidence: 99%

Average current mode control of improved bridgeless flyback rectifier with bidirectional switch

Chandranadhan¹,

Renjini²

2015

2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015]

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This paper introduces average current mode control of flyback rectifier with bidirectional switch. The proposed control scheme employs an outer voltage feedback loop, which maintains the output voltage as constant and an inner loop, which sense the input current. Average current mode control of flyback rectifier is suitable for obtaining a regulated output voltage with a varying input. Voltage equivalent of input current is averaged by using high gain current error amplifier, which again compared with the reference voltage. Reference voltage is produced by multiplying the rectified input voltage with the error output voltage. Gating pulse is generated by using this signal.This control method obtain better line and load regulation with the addition of inner current loop compared with voltage mode control. Also the rectified input voltage feedback achieves better input power factor. Conventional flyback rectifier is the inter connection of a diode bridge rectifier in the input side and a flyback converter. In order to obtain a highly efficient flyback rectifier with fewer losses an improved flyback rectifier is introduced. Here, two switches are connected in back to back to establish the bidirectional switch element, which will conduct both in the positive and negative half cycle of the ac input voltage. The transformer with dual output windings with a diode in each winding reduces the current stress across each diode. New topology adds an extra switch in the primary side and a diode in the secondary side. Improved bridgeless flyback rectifier only introduces a switch with common gate drive, a diode and an additional winding in the secondary side. Thus the weight of the converter is not affected with these additional components. Proposed average current mode control can be used as an adapter. Design and simulated waveforms are added in this paper for an output rating of 20V/1.5A.

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A New Control Strategy for Improving Weighted Efficiency in Photovoltaic AC Module-Type Interleaved Flyback Inverters

Cited by 124 publications

References 19 publications

Modeling and Simulation of Microinverter with Flyback Converter for Grid Connected PV Systems

Modeling and Simulation of Microinverter with Flyback Converter for Grid Connected PV Systems

Influence of Dynamic Efficiency in the DC Microgrid Power Balance

Average current mode control of improved bridgeless flyback rectifier with bidirectional switch

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