Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

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Voltage Regulating Transformer (VRT)

When to Use a Three-Phase Automatic Voltage Stabilizer？

When to Use a Three-Phase Automatic Voltage Stabilizer？ A three-phase automatic voltage stabilizer is suitable for scenarios requiring stable three-phase voltage supply to ensure normal equipment operation, extend service life, and improve production efficiency. Below are typical situations that req

By Echo 12/01, 2025
Voltage control

Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

A novel PET for a distribution grid called a flexible power distribution unit is proposed in this paper, and the energy exchange mechanism between the network and the load is revealed. A 30 kW 600 VAC/220 VAC/110 VDC medium-frequency isolated prototype is developed and demonstrated. This paper also

By IEEE Xplore 03/07, 2024
Topology

Individual DC Voltage Balance Control for Cascaded H-Bridge Electronic Power Transformer With Separated DC-Link Topology

In this paper, an overall individual dc voltage (including high-voltage and low-voltage dc-link voltages) balance strategy is proposed for the electronic power transformer with separated dc-link topology. The strategy adjusts active powers flowing through the isolation and output stages in different

By IEEE Xplore 03/07, 2024
Voltage control

A Two-Stage DC-DC Isolated Converter for Battery-Charging Applications

This paper proposes and analyzes a two-stage dc-dc isolated converter for electric vehicle charging applications, where high efficiency over a wide range of battery voltages is required. The proposed conversion circuit comprises a first two-output isolation stage with CLLC resonant structure and a s

By IEEE Xplore 03/07, 2024
Inverters

A Review of Current-Limiting Control of Grid-Forming Inverters Under Symmetrical Disturbances

Grid-forming (GFM) inverters are recognized as a viable solution to increase the penetration of renewable energy in bulk power systems. However, they are physically different from synchronous generators in terms of overcurrent capability. To protect the power semiconductor devices and support the po

By IEEE Xplore 03/07, 2024
Voltage control

Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

A novel PET for a distribution grid called a flexible power distribution unit is proposed in this paper, and the energy exchange mechanism between the network and the load is revealed. A 30 kW 600 VAC/220 VAC/110 VDC medium-frequency isolated prototype is developed and demonstrated. This paper also

By IEEE Xplore 03/06, 2024

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

All

When to Use a Three-Phase Automatic Voltage Stabilizer？

Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

Individual DC Voltage Balance Control for Cascaded H-Bridge Electronic Power Transformer With Separated DC-Link Topology

A Two-Stage DC-DC Isolated Converter for Battery-Charging Applications

A Review of Current-Limiting Control of Grid-Forming Inverters Under Symmetrical Disturbances

Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

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