Asymmetric H-Bridge Single-Phase Seven-Level Inverter Topology with Proportional Resonant Controller
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor and Francis Ltd
Abstract
This paper presents an asymmetrical H-bridge single-phase seven-level inverter topology with modified gating scheme for reducing the number of high-frequency switches. Due to shortcomings like steady-state error and problems in removing low-order harmonics associated with proportional integral controller, proportional resonant controller is used for grid-connected converter current control. A practical application of proportional resonant current controller is developed using a low-cost dsPIC33EP256MC202 microcontroller to keep the current injected in to the grid. The validity of proposed inverter and control scheme is verified through simulation and implemented for low-voltage laboratory prototype. © 2017, © 2017 IETE.
Description
Keywords
Bridge circuits, Electric current control, Electric inverters, Electric rectifiers, Power quality, Pulse width modulation, Resonance, Topology, Two term control systems, Voltage control, Asymmetric source configuration, Current controller, Grid-connected converters, High-frequency switches, Multilevel inverter, Proportional integral controllers, Proportional resonant controllers, Resonant current controller, Controllers
Citation
IETE Journal of Research, 2019, 65, 1, pp. 19-32