High-frequency link DC solid-state inverter

Is a high frequency PWM inverter a solid state transformer?

Rehman, A. Design of High Frequency PWM Inverter as a Part of 100kVA Solid State Transformer; Capital City University: Islamabad, Pakistan, 2022. [Google Scholar] Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

What is a cascaded H-Bridges multilevel inverter?

A cascaded H-bridges multilevel inverter produces HVAC with reduced harmonic distortion and precise voltage regulation. Moreover, a series-connected two-quadrant converter generates HVDC, providing a stable dc output through a discretised dc-link capacitor.

What is the difference between LVDC and full-bridge inverters?

The LV DC link comprises a conventional H-bridge inverter that can be extended by additional LVDC output ports, while the modular configuration of the output stage is increased by a parallel connection of three-phase full-bridge inverters. Fig. 9.10. Block diagram of an NPC-based SST.

Can a four-port solid-state transformer enhance large-scale energy generation from renewable sources?

This article proposes a four-port solid-state transformer (FPSST) to enhance large-scale energy generation from renewable sources. The FPSST incorporates a modular multilevel converter to collect both medium-voltage ac and dc from wind and solar systems.

How do mV DC inverters work?

The input stage is connected to an MV AC grid, and the submodular inverters are controlled by a phase-shifted pulse width modulation (PWM) scheme. The DAB converters configuring the isolation stage convert MV DC to LV DC that can be used for supplying DC loads, and the output inverter. Fig. 9.9.

What is a modular MLI-based converter type SST?

A modular MLI-based converter type SST configuration has been proposed by Li et al., as seen in Fig. 9.9 . The input of the SST is built in a submodular ISOP configuration where the isolation stage is composed of DC-DC converters. The output of the SST is converted to three-phase AC by a full-bridge inverter topology.