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 | IET Power Electronics Volume 17, Issue 5 Pages: 577-674 8 April 2024 |
ORIGINAL RESEARCH
Open AccessResearch on harmonic generation principle of series‐connected multi‐pulse rectifiers and optimization design method for main transformers
Pages: 577-590 | First Published: 26 February 2024
Studying the harmonic generation principle of series-connected multi-pulse rectifiers, based on the principle, the optimization design method for main transformers is proposed.
Open AccessA simple estimation method of grid‐forming inverter inertia based on rate of change of frequency
Pages: 591-602 | First Published: 04 March 2024
In order to quantify the support ability of the grid-forming inverter to the grid voltage and frequency, this paper studies the active power control block diagram based on the analysis of the support effect of inertia and damping on the active power of the system when the frequency changes. Taking the grid frequency as the input and the active power as the output, a method for identifying the inertia and damping of the grid-forming inverter based on rate of change of frequency is proposed.
Open AccessRobust adaptive backstepping control of H‐bridge inverter based on type‐2 fuzzy optimization of parameters
Pages: 603-617 | First Published: 26 February 2024
A type-2 fuzzy logic-based adaptive backstepping control (T2FABSC) approach is designed for an H-bridge inverter. This inverter has an LC filter to decrease the level of total harmonic distortion that can affect the efficiency of the system.
Open AccessMultistage converter with reduced switch voltage stress and diode current stress
Pages: 618-639 | First Published: 28 February 2024
In this research work, a new power circuit is proposed by modifying the circuitry of C-MSI converter. The proposed power circuit is developed to achieve low switch voltage stress, low diode current stress, low cost, and high efficiency compared to C-MSI converter. The proposed power circuit inherently follows the principle of the switched inductor to obtain a large voltage gain.
Open AccessVery high step‐down coupled inductor two‐phase buck converter with single magnetic element and inherent clamp voltage capability
Pages: 640-648 | First Published: 07 March 2024
The paper presents a new two-phase high step-down structure with a single magnetic element. This converter is a proper option for battery chargers, LED drivers and this converter can provide high efficiency due to applying low-voltage diodes and an extended duty cycle.
Open AccessQuad‐active‐bridge converter with flexible power flow based on LC series resonance decoupling for renewable energy charging stations
Pages: 649-662 | First Published: 07 March 2024
This paper introduces a decoupled quad-active-bridge converter with multi-directional power flow capability, which can integrate photovoltaic panel, energy storage, grid, and electric vehicle in a charging station and rules the power among them.
Open AccessEnhanced power supply circuitry with long duration and high‐efficiency charging for indoor photovoltaic energy harvesting internet of things end device
Pages: 663-674 | First Published: 07 March 2024
This paper presents a circuit that utilizes a Joule Thief, booster converter, and capacitor stack to extend the working time of internet of things devices. Notably, the capacitor stack enhances charging efficiency.
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