%PDF-1.7 %âãÏÓ 12037 0 obj > endobj xref 12037 72 0000000016 00000 n 0000004563 00000 n 0000004718 00000 n 0000004758 00000 n 0000006006 00000 n 0000006047 00000 n
This paper reviews the intelligent optimal control of a PV inverter system to provide a reference for existing technologies and future development directions. Firstly, a brief overview of a grid-connected PV
According to the China Photovoltaic Industry Association, the total installed capacity of residential PV in China reached 10.1 GW at the end of 2019, covering over 1.08 million homes, more
• String PV inverter • Multi-string PV inverter • AC module PV inverter 2.1 Descripition of topologies 2.1.1 Centralised configuration: A centralised configuration is one in which a huge
Currently, in comparison to the standalone PV systems, the use of grid-connected PV is widely adopted in my practical applications [4-7]. A typical configuration of the grid-connected system
PV power generation is developing fast in both centralized and distributed forms under the background of constructing a new power system with high penetration of renewable sources. However, the control performance and
an inverter is required. In PV system, inverter is a cru-cial component. Based on generated output wave-forms, inverter can be categorized as: square wave, amplified sine wave and pure sine
The PV inverter topologies are classified based on their connection or arrangement of PV modules as PV system architectures shown in Fig. 3. In the literature, different types of grid-connected PV inverter topologies are available, both single-phase and three-phase, which are as follows:
This paper has presented a detailed review of different PV inverter topologies for PV system architectures and concluded as: except if high voltage is available at input single-stage centralised inverters should be side-stepped, to avoid further voltage amplification.
Although various intelligent technologies have been used in a PV inverter system, the intelligence of the whole system is still at a rather low level. The intelligent methods are mainly utilized together with the traditional controllers to improve the system control speed and reliability.
The control performance of PV inverters determines the system’s stability and reliability. Conventional control is the foundation for intelligent optimization of grid-connected PV systems. Therefore, a brief overview of these typical controls should be given to lay the theoretical foundation of further contents.
By using a reliable method, a cost-effective system has to be developed to integrate PV systems with the present power grid . Using next-generation semiconductor devices made of silicon carbide (SiC), efficiencies for PV inverters of over 99% are reported .
For a grid-connected PV system, inverters are the crucial part required to convert dc power from solar arrays to ac power transported into the power grid. The control performance and stability of inverters severely affect the PV system, and lots of works have explored how to analyze and improve PV inverters’ control stability .
