An Implementation of Switched Capacitor Inverter

A DC-AC inverter containing no inductors or transformers is presented. In the common inverter always contains the magnetic elements and so it results in the electromagnetic interference problem. For avoiding the EMI effect, it is a quite excellent choice to adopt a switched capacitor (SC) circuit scheme, containing only capacitors and switches. There are two methods of voltage conversions are possible. One of conventional method as a two stage inverter, this method has a several disadvantages. The most notable ones are (i) Cost (ii) Component stress. To solve this problem a single stage inverter is used. In this project work the switched capacitor inverter arrangement is fabricated, wired up, interfaced with a dc source and was tested. There are two main components of this arrangement. These components include a switched capacitor inverter and Arduino controller. The switched capacitor inverter is used to boost the input voltage and generates a regulated ac output. The Arduino controller is controlled the switched capacitor block switches and H-bridge inverter switches. It is used to regulate the ac output by varying the duty cycle. The advantages of the SC inverter are: no use of bulky inductors and a cost effective low profile design. A single stage switched capacitor inverter is simulated in PLECS (Piecewise Linear Electrical Circuit Simulation) environment and the practical implementation of this single stage inverter is done to validate the theoretical results. Closed loop control of single stage switched capacitor inverter is tested and the experimental results were observed.