Open AccessMicro‐inverter based on single‐ended primary‐inductance converter topology with an active clamp power decoupling
Author(s) -
Keshani Milad,
Adib Ehsan,
Farzanehfard Hosein
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2016.0988
Subject(s) - decoupling (probability) , electrolytic capacitor , inverter , capacitor , decoupling capacitor , inductance , electronic engineering , grid tie inverter , reliability (semiconductor) , computer science , voltage , clamper , topology (electrical circuits) , engineering , power (physics) , electrical engineering , maximum power point tracking , control engineering , physics , quantum mechanics
The reliability and lifespan of micro‐inverters are two significant features of AC‐module photovoltaic systems. One of the most effective methods to enhance the reliability and life duration of micro‐inverters is achieved by substituting their electrolytic power decoupling capacitor with the film capacitors. In this study, a new DC/AC inverter based on an isolated single‐ended primary‐inductance converter with an active clamp power decoupling is introduced. The proposed converter has no electrolytic capacitor which results in long lifetime and high reliability. Moreover, the inverter has simple structure and low number of semiconductor switches which improve the efficiency and make it cost effective. The sufficient stepping up ability for output voltage without increasing turns ratio excessively, non‐pulsating input current, and appropriate isolation make the proposed micro‐inverter a proper choice for grid‐connected applications. The converter operating modes are discussed and design considerations are presented. Finally, experimental results of the implemented prototype validate aforementioned features and performance of the proposed micro‐inverter.