Abstract
Transformer-less single-phase grid-Tied inverter is attractive due to low cost, high efficiency, and small size. However, leakage current and second-order ripple power have to be well dealt with. Because the leakage current is a potential threat for body safety and the ripple power will decrease overall efficiency and system reliability. Both issues become obstacles for practical applications. This paper proposes a method to achieve leakage current suppression and ripple power reduce simultaneously. The main circuit is formed by adding an extra arm and a decoupling capacitor to the traditional single-phase voltage source inverter. The additional arm is controlled to keep the common voltage constant and divert the ripple power to the decoupling capacitor. A decoupled control method is also developed to achieve independent control of power factor correction and power decoupling. Finally, simulation results are presented to show the effectiveness.
Original language | English |
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Title of host publication | 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 |
Number of pages | 4 |
Publication date | 2017 |
Pages | 1753-1756 |
DOIs | |
Publication status | Published - 2017 |
Externally published | Yes |
Event | 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States Duration: 1 Oct 2017 → 5 Oct 2017 |
Conference
Conference | 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 |
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Country/Territory | United States |
City | Cincinnati |
Period | 01/10/2017 → 05/10/2017 |
Sponsor | IEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS) |
Keywords
- Common mode voltages
- Decoupling
- Leakage current
- Ripple power