1. Analysis on topology derivation of single-phase transformerless photovoltaic grid-connect inverters
- Author
-
Liao Zhiling, Qiu Diancheng, and Cao Chenchen
- Subjects
Computer science ,Photovoltaic system ,Topology (electrical circuits) ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Topology ,Network topology ,Grid ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,010309 optics ,0103 physical sciences ,Inverter ,Electrical and Electronic Engineering ,Single phase ,0210 nano-technology ,Leakage (electronics) - Abstract
Aiming at the leakage current problem of single-phase transformerless photovoltaic(PV) grid-connected inverters, the recent proposed topologies are classified and reviewed. These topologies are divided into half-bridge type and full-bridge type. The topology characteristics of transformerless PV inverter are analyzed. This paper presents some of transformerless PV inverter topologies and discusses the evolution laws among various topologies to clarify the interrelationship between them. Furthermore, according to the evolution laws, a new topology is proposed. Finally, Simulations and experiments compare leakage current suppression capability of the proposed topology, H5 topology and HERIC topology.
- Published
- 2019