Passive P-Control of a Grid-Connected Photovoltaic Inverter

Meza, Carlos; Jeltsema, Dimitri; Scherpen, Jacquelien M.A.; Biel, Domingo

doi:10.3182/20080706-5-kr-1001.00940

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…The control of these VSIs must achieve high performance in the sense of fast dynamic response, robustness to perturbations, none tracking error, and low total harmonic distortion [Meza (2012)]. Usually, linear controllers are proposed for this kind of power converters (which have to inject only fundamental components to the grid), such as proportional-integral (PI) controller [Dannehl (2009)].…”

Section: Main Problem Statementmentioning

confidence: 99%

A First Order Sliding Mode Controller for Grid Connected Shunt Active Filter with a LCL Filter

Alali

Barbot

2017

IFAC-PapersOnLine

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A first order sliding mode controller with appropriate parameters sliding surface (modeled in usual time domain and realized by transfer function) is considered here for LCL grid connected three phases three wires shunt active filter (SAF). If shunt active conditioners are already well known in compensation for the main types of current disturbances in the electrical power systems, it is also admitted that they generate some undesired components caused by VSI switching frequency. In order to prevent these components from spreading to the grid side, a LCL output filter is generally proposed. In this context, a VSI connected grid via a LCL filter is largely proposed for renewable energy systems, where the component to be injected into the grid is only the fundamental. Unfortunately, when the injected components include fundamental plus harmonics and for a LCL output filter associated to linear controllers, a phase shift appears, between the identified harmonics current and the injected current. This phase shift impacts negatively the current disturbances filtration and/or compensation of the SAF. Therefore, sliding mode controller with appropriate sliding surface, in both time and frequency domains, is proposed as nonlinear control method, to overcome the phase shift effects over the entire bandwidth, for the shunt active filter. Besides, a PWM-SM-Controller, with zero order hold in input of the PWM, will allow to operate in a fixed frequency, preventing a variable switching frequency effects. The rapidity, tracking and robustness of this proposed controller, within the SAF, are validated by Matlab, Simulink, Simscap-Sim_Power_System code.

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Section: Main Problem Statementmentioning

confidence: 99%

A First Order Sliding Mode Controller for Grid Connected Shunt Active Filter with a LCL Filter

Alali

Barbot

2017

IFAC-PapersOnLine

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“…An interesting solution that uses the nonlinear model of PVS was presented in [7]. In this work, the MPPT and the unity power factor tasks are satisfied with a single passive control, based on the work of [8].…”

Section: Introductionmentioning

confidence: 99%

Adaptive control scheme for maximum power point tracking of a photovoltaic system connected to the grid

Jaramillo-Lopez

Damm

Kenné³

et al. 2013

2013 European Control Conference (ECC)

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An adaptive control scheme for maximum power point tracking of a single-phase single-stage photovoltaic system connected to the grid is presented.The maximum power point depends on temperature and solar irradiance, ambient conditions that are time-varying and difficult to measure.Two solutions are presented. Each solution derive an estimator that approximate three different parameters. These parameters are functions of solar irradiance and temperature. In this manner, we eliminate the necessity of climatic sensors. The first solution, uses an adaptive estimator that is able to estimate constant parameters, and the second one uses a sliding mode estimator that is capable of estimate time-varying parameters.A complete analysis was done taking into account the nonlinearities showed by the closed-loop system. The Lyapunov redesign technique was used to derive a controller that gives globally asymptotically stable trajectories of the closed-loop system. Computer simulations are presented to compare the performance of both estimators and also to show the good performance of the controller.

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“…An interesting solution that uses the nonlinear model of PVS was presented in Meza et al [2008]. In this work, the MPPT and the unity power factor tasks are satisfied with a single passive control, based on the work of Sanders et al [1992].…”

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confidence: 99%

Adaptive control scheme for grid-connected photovoltaic systems with unknown bounds

Jaramillo-Lopez

Kenné

Damm

et al. 2013

IFAC Proceedings Volumes

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International audienceAn adaptive control scheme for maximum power point tracking of a single-phase grid-connected photovoltaic system is presented. The dificulty on design a controller that may operate a photovoltaic system on its maximum power point (MPP) is that, this MPP depends on temperature and solar irradiance, ambient conditions that are time-varying and dificult to measure. A solution using an on-line sliding mode estimator is presented. It estimates three different parameters that depends on solar irradiance and temperature, eliminating the necessity of having any sensor for these environmental variables. It is capable of estimate time-varying parameters. A complete analysis was done taking into account the non-linearities showed by the closed-loop system. A variation of the Lyapunov redesign technique was used to find a controller that give globally asymptotically stable trajectories of the closed-loop system. An adaptive law was found to substitute a perturbation bound and also to eliminate possible chattering due to the discontinuous controller term. Computer simulations are presented to show the good performance of the controller

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Passive P-Control of a Grid-Connected Photovoltaic Inverter

Abstract: Passive P-control of a grid-connected photovoltaic inverter. In IFAC Proceedings Volumes (1 ed.). (17; No. 1).

Cited by 10 publications

References 12 publications

A First Order Sliding Mode Controller for Grid Connected Shunt Active Filter with a LCL Filter

A First Order Sliding Mode Controller for Grid Connected Shunt Active Filter with a LCL Filter

Adaptive control scheme for maximum power point tracking of a photovoltaic system connected to the grid

Adaptive control scheme for grid-connected photovoltaic systems with unknown bounds

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