The new fundamental frequency switching operation for traditional voltage source inverters (VSI) can be operated as a single-stage high-gain inverter.

Abstract "Single-stage high-gain inverters, as the interface of inherent low-voltage DC power sources such as fuel cells, batteries, and solar panels, have recently received a lot of research attention. Many impedance-assisted inverters with different input stage configurations have been proposed. In order to Reduce the size of passive components. These inverters operate with high-frequency switching. High-frequency switching optimizes the size of passive components, but in high-frequency inductor design, control complexity, high-frequency gate driver requirements, high semiconductor Loss and electromagnetic interference have brought many challenges. This article proposes a novel fundamental frequency switching operation for a traditional voltage source inverter (VSI), which makes it operate as a single-stage high-gain inverter. Due to the novel operation The strategy changes the behavior of the traditional VSI from a step-down inverter to a step-up inverter, so it is called a new inverter in the following. With the operating strategy, the peak reverse voltage (PIV) experienced by the switch is equal to the DC link Voltage, which is different from other impedance-assisted boost inverters, where the PIV across the switch is the amplified DC voltage. The proposed inverter can convert a low-level DC voltage into a single stage with low total harmonic distortion (THD) high-voltage alternating current without the help of any external filter. A novel quarter-wave symmetrical phase shift controller is proposed, which is used to tune the The inverter performs variable voltage and frequency control. A mathematical analysis with experimental verification is proposed. The experiment was performed on a 2 kW prototype for single-phase resistive loads, induction motors and nonlinear loads."

Find open access papers here. Released in October 2021.

Tripatti, PR; Laxmi, V.; Kashri, RK; Apsani, B.; Ustun, TS A new basic frequency switching operation for traditional VSI, which can be controlled by ANN tuning QWS The converter realizes single-stage high-gain boost inversion. Electronics 2021, 10, 2499. https://doi.org/10.3390/electronics10202499.

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