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How do you change a capacitor on a central air unit? 

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The results also demonstrate a significant improvement in the capacitor voltage regulation even when a sudden load change occurs.
This work is important when an air capacitor is intended for use as an a reference standard.
Compared with the reported flying-capacitor switched-capacitor ac–ac converter, the proposed converter requires fewer switches and capacitors per unit of voltage conversion, thus suffering lower voltage stress.
The adjustability of power output and energy output demonstrate that the proposed lithium–air capacitor–battery should be a promising power system for future electric vehicles.
In this paper, a new closed loop control scheme is proposed which regulates the capacitor voltages for a multilevel flying capacitor converter.
We propose a new method based on switched capacitor scheme and power electronics control.
This paper presents a new multicell topology based on flying capacitor (FC) structure suitable for multilevel converters.
The proposed method is based on the central air-conditioning system; yet it can be easily extended to other systems.
The lumped spring-mass system is adequate for modelling the air-gap capacitor.
This study proposes a new topology for multilevel inverters based on switched-capacitor structure.

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