TPU Postgraduates from Egypt Working to Improve Autonomous Power-supply Systems

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Ibrahim Ahmed Ibrahim Mohamed and Abuelsaud Raif Siam Sayed Ahmed, Egyptian postgraduates of the School of Energy & Power Engineering have defended their thesis papers on autonomous electrotechnical complexes and systems. Young scientists are planning to stay at TPU for further work.

TPU postgraduates have completed their studies majoring in Electrical and Heat Engineering.

Ahmed’s scientific work focuses on the autonomous power-supply systems, the so-called microgrids, studies their operating modes, and searches for control laws for these systems. The work is based on the usage of new mathematical algorithms, built by analogy with the laws of evolution in nature.

“Microgrids have recently been actively distributed and promoted because you can solve a lot of problems using them. For example, power supply for remote regions, not connected to central electric power networks, assimilation of new territories, which require power sources and so on,”

Sergey Obukhov, Ahmed’s scientific supervisor, Professor at the Department for Power Engineering and Electrical Engineering says.

The applied algorithm is built by analogy with a swarm of particles. It helps to find the best solution out of many options, allowing to increase the effectiveness of the controllers of the maximum capacity of solar batteries as well as to optimize equipment configuration of the designed power supply systems based on renewable energy sources.

“Earlier, we had to sort out dozens, hundreds of thousands variants of features for future systems, as well as to analyze them during a long period of time. From a mathematical standpoint, these tasks require computers with a high level of performance. Our algorithm solves the same problem using ordinary computers. Besides, it’s universal,” Ahmed explains.

Raif’s research focuses on the operation of an autonomous voltage inverter, the central link of the electric power complex. It is a device, transforming the energy of the primary source into the energy required by the consumer.

“Today central autonomous voltage inverters are based on the elements of power electronics and operate in a key switching mode. Our task was to find such a mode of operation of this link in order to ensure an uninterrupted power supply of high quality.

At the same time, the consumer may be of any kind: from cars and planes to space vehicles,” Alexander Garganeyev, Raif’s scientific supervisor, Professor at the Department for Power Engineering and Electrical Engineering says.

The developed algorithm refers to the predictive control method using which makes it possible to predict further actions of the consumer or the system in microseconds or milliseconds.

“Together with Ahmed and our supervisors, we’ve applied for a grant from the Russian Science Foundation. We’ve been planning to develop the direction of autonomous power supply systems further,” Raif adds.