High Frequency Two-Phase Inverter with Active Decoupling
Abstract
This thesis proposes a novel topology for active decoupling in a two-phase inverter circuit to reduce converter size, improve converter lifetime, and increase efficiency. The two-phase output is particularly significant for renewable energy sources because offering a two-phase output will allow an inverter to connect to the grid and maintain the high efficiency provided by active decoupling. The mathematical model of the circuit was constructed and used to implement a proportional controller. The circuit schematic and controller block diagram were built, simulated, and tested using PLECS simulation software. The presented topology significantly reduces the size of the DC-Link capacitor required to stabilize the DC input voltage. The reduction in the size of the capacitor also allows a higher quality thin-film capacitor to implemented, which will increase the lifetime of the system. A single additional leg handles unbalanced loads, high power factor output, and non-linear output current. This inverter can supply power to houses and buildings without needing to connect to the grid, so off-grid solar systems can easily be setup without the need for complicated and expensive micro-inverter systems.
Citation
Hodge, Kevin C (2018). High Frequency Two-Phase Inverter with Active Decoupling. Undergraduate Research Scholars Program. Available electronically from https : / /hdl .handle .net /1969 .1 /188497.