Embedded tutorial 2: compilers for power and energy management

Author(s):  
U. Kremer
Author(s):  
Karl Schoder ◽  
Mark Stanovich ◽  
Tuyen Vu ◽  
Hesan Vahedi ◽  
Chris Edrington ◽  
...  

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1806 ◽  
Author(s):  
Antonio Parejo ◽  
Antonio Sanchez-Squella ◽  
Rodrigo Barraza ◽  
Fernando Yanine ◽  
Aldo Barrueto-Guzman ◽  
...  

Nowadays, microgrids are gaining importance in electric power generation and distribution environments due to their flexibility, versatility, scalability and the possibility of supplying ancillary services when connected to the grid. They allow for the customization of electric supply for very different types of consumers. Therefore, a new control model for power and energy management based on homeostaticity of electric power systems (EPS) is presented, which has been already analyzed and approved by ENEL Chile in its developmental stage. ENEL, the largest electric utility in the country, is interested in incorporating smart microgrids in the electricity distribution market, as part of a worldwide policy. Such microgrids are to be installed in buildings serviced by ENEL. To demonstrate the model’s utility, a Simulink model of a real microgrid is used, which is comprised of PV generation, energy storage, an air conditioning (AC) equipment and thermal storage of the building upon which the microgrid is installed. The behavior of every element is simulated, including the dynamic thermal model of the building in order to optimize energy management and power supply versus consumption. The behavior of the whole system is analyzed under different environmental profiles and energy consumption patterns using the proposed homeostaticity system.


Author(s):  
Qunying Shen ◽  
Bhuvaneswari Ramachandran ◽  
Sanjeev K. Srivastava ◽  
Michael Andrus ◽  
David A. Cartes

2018 ◽  
Vol 4 (3) ◽  
pp. 80-89
Author(s):  
Rüdiger Appunn ◽  
Jürgen Frantzheld ◽  
Markus Jetter ◽  
Friedrich Löser

Background: The world’s first linear motor driven passenger elevator system MULTI® started test operation at test tower Rottweil, Germany. A full scale showcase has been installed, the commissioning is finished and extensive testing activities are performed. The new test tower in Rottweil provides the perfect test and certification environment to get this ground-breaking product onto the market. The propulsion of the cars is based on an ironless long-stator linear motor with distributed active drive, motor and sensor elements. This technology allows cars to move individually in the same elevator shaft without any ropes. The same type of linear motor will also be used to exchange cars horizontally from one shaft to another. Herewith a movement of the cars in a loop or any vertical and horizontal travel path can be realized. The testing procedures to characterize the operation of the MULTI® include measurements of electrical, mechanical and thermal quantities. Smart energy management feeds power of descending cars for rising cars. To overcome the high power demand for acceleration cars, an energy buffering system is installed. Aim: This paper focuses on the power and energy management of the MULTI® demonstrator. The benefit of intelligent buffering strategy is depicted. Methods: Full scale prototype, numerical simulation, testing and measurement.   Results: This paper presents first measurement results of the MULTI® demonstrator mainly focusing on the power and energy characteristics of the propulsion system. Conclusion: Using an energy buffering system, the peak input power of the MULTI® can be reduced to 50% of the peak power level without energy buffer. The power from downward moving cars is recuperated and used for upward driving cars, balanced by the energy buffer without stressing the grid.


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