Title: Development and implementation of novel solid-state transformer for future smart microgrid

Authors: Nilesh Chothani; Dharmesh Patel; Swapnil Kumar

Addresses: Department of Electrical Engineering, School of Energy Technology (SoET), Pandit Deendayal Energy University (PDEU), Gujarat – 382007, India ' Department of Electrical Engineering, Government Engineering College, Bharuch – 390012, India ' Department of Electrical Engineering, School of Energy Technology (SoET), Pandit Deendayal Energy University (PDEU), Gujarat – 382007, India

Abstract: Electrical transformers perform an imperative duty concerning bidirectional power flow and system flexibility. The progression of solid-state controllable devices, such as converters and inverters and the employment of power electronics in power systems have solved many issues in the present distribution network. Nowadays, solid-state transformers (SST) are replacing electromagnetic transformers by improving power quality and providing controllable features with distributed energy resources (DERs). This article presents the design and implementation of SST considering current and voltage control methods. The architecture of SST is developed with functionality such as regulation of voltage, control of current, solving issues of power quality and easy integration of DERs/EVs. AC-DC PWM-based boost rectifier stage, DC-DC dual active bridge with single phase shift control (SPS), and DC to AC inverter stage with space vector PWM have been designed and simulated as per the structure of SST. The article describes the developed hardware setup of the single-phase AC to DC active boost rectifier stage of SST in a laboratory environment. The proposed SST models with three stages have been developed in MATLAB, and outcomes have been investigated and furnished. The simulation and hardware results obey the required harmonic contents and provide good voltage regulation and power control.

Keywords: boost rectifier; dual active bridge converter; pulse width modulation; PWM; single phase shift control; SPS; inverter; solid state transformer; SST.

DOI: 10.1504/IJPELEC.2026.153510

International Journal of Power Electronics, 2026 Vol.22 No.3, pp.314 - 341

Received: 03 Jan 2025
Accepted: 05 May 2025
Published online: 12 May 2026 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article