Update README.md

README.md

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 # *gritulator:* Grid Converter Simulator in Python
 
-Introduction
-------------
-This open-source software includes simulation models for grid converter control and related electrical subsystems such as an inductive-capacitive-inductive (LCL) filter connected to an inductive-resistive grid. The electrical subsystem models are simulated in the continuous-time domain while the control methods run in discrete time. The default solver is the explicit Runge-Kutta method of order 5(4) from scipy.integrate.solve_ivp. A number of control methods are provided as examples. The documentation is available here:
 
-https://aalto-electric-drives.github.io/gritulator/
+This version of the simulator is not maintained anymore. *gritulator* and the motor drive simulator *motulator* have now been merged together. The last version of the open-source software is available in the following repository:
 
-Installation
-------------
-See the documentation:
+https://github.com/Aalto-Electric-Drives/motulator
 
-https://aalto-electric-drives.github.io/gritulator/installation.html
 
-Usage
------
-The grid-converter system, controllers, reference sequences etc. are configurable. As a starting point, example scripts and Jupyter notebooks can be found here:
+The present repository is now only used for archive purposes and is related to the version of the simulator presented in the following publication:
 
-https://aalto-electric-drives.github.io/gritulator/auto_examples/index.html
-
-New system models and controllers can be developed using the existing ones as templates.
-
-
-Acknowledgement
----------------
-This project has been sponsored by ABB Oy. The example control methods included in this repository are based on published algorithms (available in textbooks and scientific articles). They do not present any proprietary control software.
+http://dx.doi.org/10.1109/ISGTEUROPE56780.2023.10407218