State-of-the-art power electronics systems for solar-to-grid integration

Vakacharla, Venkata R.; Gnana, K.; Pan, Xuewei; Narasimaharaju, B.L.; Mangu, B.; Banerjee, Atanu; Sharma, Renu; Rathore, Akshay Kumar

doi:10.1016/j.solener.2020.06.105

Cited by 32 publications

(10 citation statements)

References 157 publications

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“…To maintain the aforementioned proportionality by means of predictive control through its cost function, a term V P can be minimized to force the fulfillment of (14). The term V P to be minimized, in discretized form, can consider predictions for v C1 and i L1 with different prediction horizons h; thus, it can be expressed as,…”

Section: Extended Horizon Fcs-mpc For Single-phase Grid-connected Qzsimentioning

confidence: 99%

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

Baier

Villarroel²,

Torres

et al. 2023

IEEE Access

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Small grid-connected inverters are not friendly to the electrical grid, in the sense they do not take any action to support the grid when contingency events occur. For example, because of their relatively low power capacity, small grid-connected inverters are not designed to provide dynamic frequency support to the grid. On the other hand, it is well known that microgrids and weak grids including distributed generation would benefit significantly if all of the grid-connected converters could support and help against grid frequency disturbances. Within the family of small grid-connected converters, single-phase quasi-Z-source inverters (QZSI) have become an attractive topology, because they represent a reliable and economical alternative, and can be very efficient in applications that demand small or medium powers. However, a major disadvantage is that the control strategy must manage both direct current and alternating current variables through the same group of switches. The latter is a challenging task when implementing predictive control schemes. This paper proposes a finite control set model predictive control (FCS-MPC) strategy for a single-phase grid-supporting QZSI. The proposed predictive scheme can be easily integrated with a complementary control block to provide grid frequency support. Experimental results show evidence of the inverter operating under the proposed control strategy and providing grid frequency support, which demonstrates the feasibility of the proposal.

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Section: Extended Horizon Fcs-mpc For Single-phase Grid-connected Qzsimentioning

confidence: 99%

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

Baier

Villarroel²,

Torres

et al. 2023

IEEE Access

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“…MLIs are a viable solution for meeting the demand for higher power quality, higher voltage gain with less stress, and low power loss requirement. It has low dv/dt characteristics, superior efficiency, better EMC, modularity, and fault tolerance capabilities, 1 making them a better alternative for medium voltage (MV) and high voltage (HV) applications such as Static Var Compensator and large electrical drives 2,3 as well as in applications like renewable energy, 4,5 electric vehicles, 6 PV Grid 7,8 HVDC systems, the smart grid paradigm, and onboard power systems. 9,10 An extensive review of the multi-level inverter has been presented by Kumari et al 11 The three most basic and well-known MLIs are Cascaded H-bridge (CHB-MLIs), 12 Neutral Point Clamped (NPC) or Diode Clamped MLIs (DC-MLIs), 13 and Flying-Capacitor MLIs (FCMLIs).…”

Section: Introductionmentioning

confidence: 99%

A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

Wasiq

Siddique

Sarwar

et al. 2022

Circuit Theory & Apps

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A High Gain High‐Level switched‐capacitor multilevel inverter with low voltage stress requires a lower number of devices at peak output voltage and a reduced number of circuit components along with an increase in voltage boosting capability. The features of the proposed topology include inherent boosting (Gain: 3) and self‐voltage balancing properties. To avoid complex algorithms, calculations and obtain superior quality output voltage the nearest level control (NLC) modulation technique is used. The extension of the topology has also been derived for the higher voltage gain and levels by adding four switches and one capacitor. The proposed topology has been compared with the recently developed topologies. The power loss analysis and simulation analysis has been done with different loading conditions under the environment of PLECS 4.2.18 and MATLAB® 2018a, respectively. A hardware bench has been set up to show the verification of the simulation results with hardware results.

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“…The conventional synchronous generators will be replaced by high penetration renewable energy sources in power grid. Among various renewable energy sources, solar photovoltaic (PV) energy is regarded as one of the most promising energy sources, because it has some advantages in terms of low maintenance-cost, rapid energy conversion, long effective life, high reliability and so on [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…The PV system can obtain inertia support capability. The research on the virtual inertia control of the grid-connected PV plants was summarized in [2][3][4][5][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Fast Frequency Regulation Method for Power System With Two-Stage Photovoltaic Plants

Zhang

et al. 2022

IEEE Trans. Sustain. Energy

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The full utilization of solar energy is of great significance for reducing carbon emissions and alleviating environmental problems. Fast frequency regulation plays an important role in the power system with grid-connected two-stage photovoltaic (PV) plants. The presented fast frequency regulation method is composed of droop control, virtual inertia control and de-loading control. This work focuses on improving droop control and virtual inertia control for PV plants connected to grid. Due to non-Gaussian disturbance induced by solar irradiance, an adaptive control strategy is proposed by minimizing an improved performance index which combines mean square error (MSE) and minimum error entropy (MEE) criteria together. Based on the collected frequency deviation series data, the entropy of the frequency deviation is estimated with the aid of a quantizer. The droop control coefficient and inertia gain are then solved by an improved gravitational search algorithm (IGSA). Finally, the effectiveness of the proposed strategy is testified by an illustrative power system with a two-stage grid-connected PV plant.

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State-of-the-art power electronics systems for solar-to-grid integration

Cited by 32 publications

References 157 publications

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

A Predictive Control Scheme for a Single-Phase Grid-Supporting Quasi-Z-Source Inverter and Its Integration With a Frequency Support Strategy

A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

Fast Frequency Regulation Method for Power System With Two-Stage Photovoltaic Plants

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