Multilevel inverter for grid interconnection with square wave voltage sources and minimisation of active filter capacity
by Yuichi Noge; Mingcong Deng; Mitsuru Miyashita
International Journal of Advanced Mechatronic Systems (IJAMECHS), Vol. 9, No. 3, 2021

Abstract: This paper proposes an integrated micro-inverter using a multiple-step controlled voltage source and an active filter connected in series. Recently, a micro-inverter based on an isolated resonant DC-DC converter is widely used. A typical micro-inverter can achieve a high efficiency around 97%. In addition, a micro-inverter system can achieve high efficiency of maximum power point tracking (MPPT) thanks to its small photovoltaic area. The proposed circuit is a combination of a multiple-step controlled voltage source, an active filter connected in series and an unfolding circuit. This circuit reduces the power to be converted to 1/8 compared to a conventional inverter. The control strategy for the proposed circuit is also discussed in this paper. Finally, the grid connected operation is verified through circuit simulation.

Online publication date: Mon, 22-Nov-2021

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Advanced Mechatronic Systems (IJAMECHS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com