Electrical Engineering Guides

Power Systems

Nyquist Stability Criterion: What is it? (Plus Matlab Examples)

What is Nyquist Stability Criterion? Nyquist stability criterion (or Nyquist criteria ) is defined as a graphical technique used in control engineering for determining the stability of a dynamical system. As Nyquist stability criteria only considers the Nyquist plot of open-loop control systems, it

By Electrical4u 03/28, 2024
Power Systems

SCADA System: What is it? (Supervisory Control and Data Acquisition)

What is SCADA? SCADA stands for “Supervisory Control and Data Acquisition.” SCADA is a process control system architecture that uses computers, networked data communications, and graphical Human Machine Interfaces (HMIs) to enable high-level process supervisory management and control. SCADA systems

By Electrical4u 03/28, 2024
Power Systems

Programmable Logic Controllers (PLCs): Basics, Types & Applications

What is a PLC? PLC stands for “Programmable Logic Controller.” A PLC is a computer specially designed to operate reliably in harsh industrial environments, such as extreme temperatures and wet, dry, and/or dusty conditions. PLCs are used to automate industrial processes such as a manufacturing plant

By Electrical4u 03/28, 2024
Power Systems

Steady State Error: What is it? (Steady-State Gain, Value & Formula)

What is Steady State Error? Steady-state error is defined as the difference between the desired value and the actual value of a system output in the limit as time goes to infinity (i.e. when the response of the control system has reached steady-state). Steady-state error is a property of the input/o

By Electrical4u 03/28, 2024
Power Systems

How to Find the DC Gain of a Transfer Function (Examples Included)

What is a Transfer Function? A transfer function describes the relationship between the output signal of a control system and the input signal. A block diagram is a visualization of the control system that uses blocks to represent the transfer function and arrows representing the different input and

By Electrical4u 03/28, 2024
Power Systems

Rise Time: What is it? (Equation And How To Calculate It)

What is Rise Time? Rise time is defined as the time taken for a signal to cross from a specified low value to a specified high value. In analog and digital electronics, the specified lower value and specified higher value are 10% and 90% of the final or steady-state value. So the rise time is typica

By Electrical4u 03/28, 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 03/07, 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

Nyquist Stability Criterion: What is it? (Plus Matlab Examples)

SCADA System: What is it? (Supervisory Control and Data Acquisition)

Programmable Logic Controllers (PLCs): Basics, Types & Applications

Steady State Error: What is it? (Steady-State Gain, Value & Formula)

How to Find the DC Gain of a Transfer Function (Examples Included)

Rise Time: What is it? (Equation And How To Calculate It)

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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