Back to Search
Start Over
Single-Phase Grid-Tied Transformerless Inverter of Zero Leakage Current for PV System
- Source :
- IEEE Access, Vol 8, Pp 4361-4371 (2020)
- Publication Year :
- 2020
- Publisher :
- IEEE, 2020.
-
Abstract
- Multi-level transformerless inverters are widely used in grid-tied PV systems since they characterized by higher efficiency and lower cost. In this context, new topologies, modulation, and control schemes were presented to solve problems of a common-mode voltage and leakage current. This work proposes a transformerless five-level inverter with zero leakage current and ability to reduce the harmonic output content for a grid-tied single-phase PV system. The neutral of the grid links to a common on which the negative and the positive terminals of the DC-link are connected via parasitic capacitors that can eliminate the leakage current. The proposed topology, with its inherent circuit structure, leads to boost the overall efficiency. Simulation and experimental results show almost zero leakage current and a high-quality output when maintaining balanced capacitor voltages on the DC-link input. The experimental results show 1.07% THD and 96.3 % maximum efficiency when injecting a power of 1.1 kW that verify the performance of the proposed inverter with PV sources.
- Subjects :
- General Computer Science
Computer science
Context (language use)
Topology (electrical circuits)
02 engineering and technology
solar PV
law.invention
law
0202 electrical engineering, electronic engineering, information engineering
Hardware_INTEGRATEDCIRCUITS
General Materials Science
IGBT inverters
Leakage (electronics)
Total harmonic distortion
business.industry
020208 electrical & electronic engineering
Photovoltaic system
General Engineering
Electrical engineering
021001 nanoscience & nanotechnology
Power (physics)
Capacitor
Capacitor voltage
Harmonic
Inverter
lcsh:Electrical engineering. Electronics. Nuclear engineering
0210 nano-technology
business
lcsh:TK1-9971
Voltage
transformerless grid-connected photovoltaic inverter
Subjects
Details
- Language :
- English
- ISSN :
- 21693536
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- IEEE Access
- Accession number :
- edsair.doi.dedup.....816cbf6901f336f9f9c47069ed19c365