access icon free Effect of different pulse-width modulation control methods on the behaviour of the series modified switched boost inverter

© The Institution of Engineering and Technology
Received 28/07/2018, Accepted 05/06/2019, Revised 21/04/2019, Published 17/06/2019

In this study, a switched Z-source inverter with a new suitable control method is proposed that is called the series modified switched boost inverter (SM-SBI). In addition, the generalised proposed control method is presented. Furthermore, in order to show the effect of the other control methods on the operation of SM-SBI, the operation of the proposed inverter is presented using two other control methods. In order to analyse precisely, each of these three switching methods is completely introduced and then the operation of SM-SBI in these three switching methods is thoroughly stated. In addition, equivalent circuits of the SM-SBI during these control methods are presented. The voltage and current equations of all elements in the proposed structure based on the three switching methods are derived. In addition, the power loss analysis of SM-SBI is presented too. In order to show the effect of used control methods on the other conventional structures, a comprehensive comparison between the proposed inverter and the other switched step-up inverters is shown by applying these three switching methods. In the end, in order to confirm theoretical analyses, the simulation results by using PSCAD/EMTDC software are presented as well as the experimental results.

Inspec keywords: switching convertors; equivalent circuits; PWM invertors

Other keywords: generalised proposed control method; suitable control method; series modified switched boost inverter; switching methods; PSCAD/EMTDC software; pulse-width modulation control methods; SM-SBI; switched Z-source inverter

Subjects: Control of electric power systems; Power electronics, supply and supervisory circuits; DC-AC power convertors (invertors)

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