The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Recent research has shown great potential in energy efficiency optimization by harvesting regenerative energy of industrial robots. This paper presents further insight into how dependent regenerative energy is on the mass of the robot tool, as well as how the total regenerative energy is distributed between various robot links.
Paper is presenting application of synchronized power flow measurement system within 13 locations of DC microgrid installation in production plant with specific measurement equipment system developed for dynamic energy flow analysis. Insight into internal DC bus power exchange behavior and interconnected operation advantages with respect to energy efficiency improvement is provided. Future trends...
This work presents a research on creation new career opportunities in the electrical engineering education. The new generation of qualified engineers from EU and EU Neighborhood regions will bring up economics not only in Latvia, but also in EU and EU Neighborhood regions. The creation of innovation based training modules for electrical engineers in energy saving technologies in cooperation with Central...
Method of estimating optimal power supply performance parameters with comparison of two different power measurement data analysis methods is introduced. Application of estimating optimal infeed supply converter performance parameters for industrial DC microgrid with multiple DC supplied industrial manipulators and an spot welding process has been analyzed.
This paper report about modelling approach based on basic experimental measurements of bidirectional AC/DC converter. Modelling of existing AC/DC power converter has been seen in context with development of DC microgrid supply system where operational efficiency and DC side voltage stability are seen as primary tasks for individual component modelling within interconnected system.
A motor drive system for the purpose of bidirectional DC power flow control has been developed. A laboratory test bench has been setup to determine the dynamic properties of the system and to verify the proposed power flow control principle. Control board prototype has been developed and briefly described. Results of full reference power cycle tests have been summarized.
Conceptual analysis of repetitive current of DC load is presented for two type of data processing approaches. Offline post-processing type approach as well as online adaptive data analysis method is introduced. Application of introduced analysis in case of repetitive DC current cycle with fixed duration is presented focusing of current-time behavioral investigation. Comparison of obtained analysis...
This research paper cover optimization process a converting conventional AC supply system towards DC based industrial power distribution system with supercapacitor storage based power balancing functionality. Electrical power consumption reference data is based on 4 industrial robot manufacturing area with automotive industry specific production processes and respective electrical load examples. Improvement...
An objective to control power flow in intermediate DC link of typical induction drive converter has been introduced and respective drive setup intended for such task. Theoretical considerations and simulation results of control approach utilizing available drive controller capabilities like direct torque control and speed control, as well as introduction of additional adaptive funnel type controller...
It is state of the art for many drive systems like those used in industrial robotics, conveyor systems or diverse numerical control machinery to have a common DC bus power system architecture. Due to regenerative braking, the DC bus voltage increases until a certain limit, which is limited means of a balancing resistor (brake chopper). Systems that require rapid cyclic starts and stops are subject...
Self-discharge is an important performance factor when using supercapacitors. Voltage losses in the range of 5–60% occur over two weeks. Experiments show a dependency of the self-discharge rate on various parameters such as temperature, charge duration and short-term history. In this paper, self-discharge of three commercially available supercapacitors was measured under various conditions. Based...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.