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Author: h.gras
Type: Model
Downloaded: 86 times
Date: 2023-05-30

Controlled RLC

Description:
Controllable inductance and resistanced. The values can be varied during the time-domain simulation.

Tag(s): RLC, inductance, resistance, control, capacitance, controllable, vary

Author: h.gras
Type: Library
Downloaded: 108 times
Date: 2022-09-09

Digitial Twin Toolbox

Description:
The Digital Twin toolbox provides an example demonstrating how to synchronize EMTP device parameters with data received from a sender (Sender) through TCP/IP using the WebSocket protocol. A receiver (... see moreReceiver) accepting data in string format is also provided and may be started from the “Digital Twin Receiver” button device of the Digital Twin library.

To install:
- Download and unzip the file
- start the installer. Select the folder of the EMTPWorks version you which to add the Digital Twin Toolbox.
- Restart EMTP. A new Digital Twin library and a new Digital Twin example should be available.

More information is available from the help file of the Digital Twin device of the library.

Tag(s): digital twin, TCP, IP, scada, control room

Author: e.malaval
Type: Model
Downloaded: 29 times
Date: 2022-01-19

externally controlled deadband

Description:
This devices allow a to add a deadband in a signal. The left and right limits of the deadband are indicated with external signals.

The signal is shifted so that there is a continuity at the... see more deadband limits.

Tag(s): Model, deadband, hysteresis

Author: e.malaval
Type: Model
Downloaded: 93 times
Date: 2022-01-19

HVDC models

Description:
These models contain a 3-phase rectifier (AC/DC) and a 3-phase inverter (DC/AC).

The average model (AM) just contains a control circuit that is connected to several controlled sources.
... see more
The detailled model (DML) contains complete inverter and rectifier models and represents the semi-conductors.

Tag(s): Power electronics, inverter, rectifier, average, detailled

Author: h.gras
Type: Publication
Date: 2021-11-30

Modular Multilevel Matrix Converter for Low-Frequency AC Transmission – modeling and Simulation in EMTP

Description:
Authors: Rafael Castillo-Sierra and Giri Venkataramanan
The transmission of power with AC faces limitations both to the stable operation of the electrical system and to the physical properties of... see more the transmission lines. Therefore, alternatives are being sought to mitigate these problems without the need to build new lines or replace existing ones with new, more powerful ones. In this context, a proven method makes it possible to overcome these problems by reducing the frequency at which power is transmitted. This method is known as Low Frequency AC Transmission (LFAC). In this sense, the model presented in this Research Contribution Prize Program EMTP® 2021 shows the implementation of a low-frequency transmission line in a small power system. The model presented shows a new block in EMTP of the AC/AC converter used, the Modular Multilevel Matrix Converter (MMMC) and the controls necessary for its operation. Time domain studies show that the technology is feasible and has the potential to improve the controllability and stability of transmission systems.

Tag(s): AC-AC power conversion, Electromagnetic Transient Studies in EMTP, Low frequency AC transmission, Modular Multilevel Matrix Converter