Modeling and Controller Design of an Autonomous PV Module for DMPPT PV Systems

Chen, Cheng-Wei; Chen, Kun-Hung; Chen, Yaow-Ming

doi:10.1109/tpel.2013.2287752

Cited by 77 publications

(23 citation statements)

References 23 publications

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“…It has got a lot of attentions in series-connected applications [2]- [8]. Among them, [7] identified FSBB as the most promising concept for series-connected applications and [8] presented the parameter design criteria and proposed the small-signal ac model and controller design of a single PV module. In order to have better input voltage tracking performance, the smooth transition and parameter design criteria presented in [8] has been adopted in this paper.…”

Section: The Dmppt Pv Systemmentioning

confidence: 99%

“…The small-signal ac model of a single PV module composed of a PV panel and a FSBB converter has been proposed in [8]. However, since the output impedance is not derived, some extra transfer functions need to be developed.…”

Section: Model Of the Stringmentioning

confidence: 99%

“…The PV simulator, Agilent E4360A, is used to simulate the PV modules with two different power levels. It should be mentioned that since the double pole displacement phenomenon is not obvious in boost mode, only the compensator for buck mode is modified based on the proposed small-signal ac model and the design criteria introduced in [8]. Fig.…”

Section: Simulation and Experimental Verificationmentioning

confidence: 99%

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Analysis of the series-connected distributed maximum power point tracking PV system

Chen

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The output power of a string of photovoltaic (PV) panels reduce significantly under mismatching and shading effect. Therefore, in order to optimal the output power of the PV panels, the distributed maximum power point tracking (DMPPT) PV systems with the feature to perform maximum power point tracking (MPPT) function on each PV panel have been proposed. Among various circuit topologies, the scheme with seriesconnected converter output terminals has found a lot of attention due to its low rating devices and low voltage conversion ratio. It is well known that the cross-coupling effect introduced by the series-connected structure can be suppressed under closed-loop control. However, the small-signal ac model and compensator design of a PV module in a string have never been developed and analyzed in detail. Therefore, in this paper the small-signal ac model with the remaining PV modules in the string considered is derived to analyze the stability of the system. The derived mathematical equations are verified with computer simulations and a prototype system consists of two series-connected fourswitch buck-boost (FSBB) converters and a single phase grid-tied inverter. Keywords-PV module; distributed maximum power point tracking (DMPPT); micro-converter; four-switch buck-boost converter (FSBBC); small-signal ac model I.978-1-4799-6735-3/15/$31.00 ©2015 IEEE

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Section: The Dmppt Pv Systemmentioning

confidence: 99%

Section: Model Of the Stringmentioning

confidence: 99%

Section: Simulation and Experimental Verificationmentioning

confidence: 99%

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Analysis of the series-connected distributed maximum power point tracking PV system

Chen

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…In terms of architecture, contemporary battery charger solutions can be grouped into three main categories: low-drop-out (LDO) voltage regulators [2]- [5], switch-mode-power supplies (SMPS) [6]- [13], and charge-pump converters [14], [15]. Various topologies and algorithms can be found in literature for the above mentioned categories.…”

Section: Introductionmentioning

confidence: 99%

“…While this applies to a wide range of PV applications, for our study we have considered solar panels which operate at 17 V-20 V and are of power rating 20 W-60 W. A phone/tablet battery will be a 1 S/2 S Li-ion system (4.2 V/8.4 V), and so requires a buck converter to interface to these panels. For PV applications, there have been efforts to develop a small-signal model approach to the problem as in [13], [17]; however, owing to the varying nature of the solar irradiation and temperature, the source is highly non-linear and requires a large-signal approach in addition to a small-signal approach. Cascaded power stages with switching topologies (especially under MPPT mode) may result in multiple reference signals for intermediate voltages resulting in short-circuit conditions that can damage components or cause thermal runaway or system shut down.…”

Section: Introductionmentioning

confidence: 99%

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

Biswas

Huang

Vaidya

et al. 2016

IEEE Trans. Circuits Syst. I

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A pair of universal current mode control schemes for charging a Li-ion battery for mobile applications are discussed in this paper. The peak-current mode control schemes, based on a single control loop, is universal because it is designed with a single-stage buck charger for both a conventional wall adapter dc source as well as a solar photovoltaic (PV) module of comparable specifications. The charging schemes remove the need for an extra MPPT (maximum power point tracking) power converter stage. This control scheme is non-linear and incorporates all possible scenarios: mode of operation of a battery, current charging rate and power characteristic of input source. The algorithm uses need-based MPPT and ensures minimal battery discharge, and also uses minimum number of sense variables in the circuit. The methods differ in the way MPPT is implemented: perturb and observe (P&O) and fractional open circuit voltage. Simulation results demonstrating battery charge profile, validity of the algorithm under varying insolation conditions and platform workloads are presented, along with a discussion of the trade-offs of the two methods. Proof-of-concept hardware results are also provided.

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Design and analysis of a high step‐up single‐switch coupled inductor DC‐DC converter with low‐voltage stress on components for PV power application

Azizkandi

Sedaghati

Shayeghi

2019

Circuit Theory & Apps

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This paper presents a single-switch, high step-up, non-isolated DC-DC converter for photovoltaic (PV) power application. The proposed converter is composed of a coupled inductor, a passive clamp circuit, a voltage multiplier cell, and a voltage lift circuit. The passive clamp circuit recovers the leakage inductance energy of the coupled inductor and limits the voltage spike on the switch. Configuration of the passive clamp and voltage multiplier circuits increases the converter voltage gain. High-voltage gain without a large duty cycle, low turn ratio of the coupled inductor, low-voltage stress on the switch and diodes, leakage inductance energy recovery, and high efficiency are the main merits of the suggested DC-DC converter. Steady-state operation of the converter in continuous conduction mode (CCM), discontinuous conduction mode (DCM), and boundary condition mode (BCM) is discussed and analyzed in detail. Then, design procedure of the proposed converter is given. The presented DC-DC converter is compared with similar topologies to verify its advantages. Moreover, theoretical efficiency of the presented converter is calculated in details. Finally, simulation and experimental measurement results of 388 V-220 W prototype of the proposed DC-DC converter at 50-kHz switching frequency are presented to verify its performance.

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Modeling and Controller Design of an Autonomous PV Module for DMPPT PV Systems

Cited by 77 publications

References 23 publications

Analysis of the series-connected distributed maximum power point tracking PV system

Analysis of the series-connected distributed maximum power point tracking PV system

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

Design and analysis of a high step‐up single‐switch coupled inductor DC‐DC converter with low‐voltage stress on components for PV power application

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