A new strategy to control the active and reactive power for single phase grid-connected PV inverter

Aamri, Faicel El; Maker, Hattab; Mouhsen, Azeddine; Harmouchi, Mohammed

doi:10.1109/irsec.2015.7455080

Cited by 19 publications

(13 citation statements)

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“…(7-11) and Eq. (7)(8)(9)(10)(11)(12), are auxiliary control functions to decouple the dq power loops components and facilitate the model analysis [4].…”

Section: Simulation Results Of the Single-phase Pv Systemmentioning

confidence: 99%

“…(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) Then, ̇, found in Eq. (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26) to obtain the trajectory of the d-axis reference current , is designed as follows:…”

Section: Simulation Results Of the Single-phase Pv Systemmentioning

confidence: 99%

“…Multiple-stage power conversion systems decrease the overall energy efficiency and reliability of the PV installation besides increasing the cost [2], [4]. Therefore, from the point of view of efficiency and reliability, single-stage grid-connected photovoltaic systems, which consist of a PV array and a DC-AC converter with MPPT, have been reported in some papers to control the active power and reactive power using conventional linear control techniques as in [4] - [12]. Most of the studies have been developed for three-phase systems, which are widely utilized in PV systems but, due to the high-scale penetration of low-power single-phase PV systems, in last years some researchers have aimed their studies to singlephase systems not only from the efficiency and reliability point of view but also for grid support.…”

Section: List Of Tablesmentioning

confidence: 99%

“…Then, as it was stated above, the 0 frame has been adopted in this work because the control variables become DC values, therefore, facilitating the nonlinear control design. The abc model is transformed to the synchronous 0 frame utilizing the Park's transformation matrix given by (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17). Then, writing equations (3-8) -(3-11) in matrix form, the following expressions are obtained:…”

Section: Synchronous Reference Frame Control For Three-phase Systemsmentioning

confidence: 99%

“…The closed loop error signals are defined by equations (7-24), (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25), and . Then, substituting these equations into Eq.…”

Section: Stability Analysismentioning

confidence: 99%

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Grid-connected photovoltaic systems based on nonlinear control.

Rivera¹

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Solar energy, considered as abundant and clean renewable energy source, has been utilized for a variety of applications such as generation of electricity for low and medium power. Nowadays, due to the high-scale penetration of photovoltaic systems, reliable and efficient grid-connected photovoltaic (PV) systems using the advances of power electronics and control system technology are desirable. Thus, single-stage gridconnected photovoltaic systems, have gained attention, especially in low voltage applications. However, PV systems exhibit nonlinear behavior due to the intrinsic features of the PV cell and nonlinear switching functions of the inverter that could negatively affect the performance of the system if they are not adequately compensated for. In this dissertation, using the general structure for the synchronous dq0 frame, a single-stage three-phase grid-connected photovoltaic inverter with a nonlinear control strategy is developed to track the maximum power regardless of the atmospheric conditions and to control the active and reactive power without the necessity of an additional power converter. A novel trajectory of the reference current is obtained online taking into account the dynamics of the DC link capacitor and the switching function of the inverter. v Furthermore, due to increased penetration of low-power single-phase PV systems in residential applications, a single-stage single-phase grid-connected PV system with a nonlinear control strategy is proposed in this dissertation. Unlike to the three-phase system, the single-phase system includes a novel method to mitigate the double linefrequency current ripple of the PV array, which is the major drawback of the single-phase PV inverter. Moreover, based on the preceded work, the nonlinear controller is combined with adaptive control to estimate the unknown disturbances that physically could appear in the circuit and affect the performance of the system. Additionally, in this study, the stability of the system and boundedness of signals of the closed-loop system are demonstrated by Lyapunov stability analysis for both the three-phase system and the single-phase system respectively. Simulation results show the effectiveness and robustness of the proposed controllers to track the maximum power and to control the active and reactive power to sudden changes in the atmospheric conditions and changes in the load.

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“…(7-11) and Eq. (7)(8)(9)(10)(11)(12), are auxiliary control functions to decouple the dq power loops components and facilitate the model analysis [4].…”

Section: Simulation Results Of the Single-phase Pv Systemmentioning

confidence: 99%

Section: Simulation Results Of the Single-phase Pv Systemmentioning

confidence: 99%

Section: List Of Tablesmentioning

confidence: 99%

Section: Synchronous Reference Frame Control For Three-phase Systemsmentioning

confidence: 99%

“…The closed loop error signals are defined by equations (7-24), (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25), and . Then, substituting these equations into Eq.…”

Section: Stability Analysismentioning

confidence: 99%

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