However, 0 pzc does not depend on r] or 0, so this change would only add a constant factor to both exponential terms and would not change the general characteristics of the following equations. Sauer’s team are all aspects on battery and energy storage systems for mobile and stationary applications. This paper was a milestone on how to control three-phase converters with PWM modulation whilst providing highest possible utilization of the converter. CiteScore values are based on citation counts in a given year e. Page 1 of 7.

This thesis examines the optimal combination of different operation modes and the associated design considerations. We wish his wife Brigitte and their children, Christoph, Franziska, Thomas and Stephan the strength to bear this heavy loss. Spinelli, Journal of Power Sources 95 As a teacher, he taught several courses on switched mode power supplies. Additionally, the resistance in parallel to a negative capacitance needs to be negative as well, which is also hard to explain.

Researcher Academy Author Services Try out personalized alert features. His thesis was in the area of converter modulation techniques. Conclusion This paper proposes an interpretation of the processes causing the different parts of the impedance spectrum of the negative and the positive electrode of lead-acid batteries.

This paper on PWM modulation techniques for converters has been cited by many researchers ever since. In the Proc. It can be seen that the low-frequency capacitive semicircle and the inductive semicircle are much more current dependent and wrth with the same factor, while the high-frequency semicircle does not change much with tehsis.


RWTH AACHEN UNIVERSITY Institute for Power Electronics and Electrical Drives – English

High-frequency inductive semicircle of positive electrode; left: Its size changes with SOC, i. Due to migration of article submission systems, please check the status of your submitted manuscript in the relevant system below:.

If the violations are within tolerable limits can be tested with the Hilbert or Kramers-Kronig transform []. Rybalka, Journal of Power Sources 32 During charging, the ions first have to be adsorbed to the electrode before they can take part in the charge-transfer reaction. We wish his wife Brigitte and their children, Christoph, Franziska, Thomas and Stephan the strength to bear this heavy loss.

Aachener Beitr├Ąge des ISEA

Bladen, Journal of Applied Electrochemistry 7 Kontakt Redaktion Publizieren Administration. Mechanical on-load tap changers are widely Wright, Corrosion Science 31 Name Course of studies and matriculation number E-mail address Name of the company where the internship was completed Supervising professor and assistant to the final thesis Theme of the thesis Restration is only possible once the topic of the thesis has thsis confirmed at the ISEA.

Simulations with discontinuous coating Fig. On the other hand, a negative capacitance is rather hard to imagine for a physical or chemical process, so both cases seem to be unlikely. This is of course rather unlikely; so most probably the thesi diameter of the adsorption semicircle has another origin, e.

isea rwth thesis

This is illustrated in the following with two exemplary sets of parameters. Publishing your article with us has many benefits, such as having access to a personal dashboard: Garcia-Belmonte, Electrochimica Acta 51 4 Dc are always larger than zero. Sadkowski, Electrochimica Acta 49 14 All derivations of equations and the method how to determine the impedance formulations can be found in [43].


isea rwth thesis

The lifetime and safety of lithium-ion batteries is a key requirement for successful market introduction of electro mobility as well as for the application in stationary use.

Gutmann, Journal ieea the Electrochemical Society 1 Sauer published his PhD thesis on lead-acid batteries and on the optimum design and management of off-grid power supply systems at University of Ulm under the guidance of Prof. Such behaviour could be interpreted as indication of depletion see Part II of this paper.

The inclination of the inductive branch can be attributed to the skin effect or current displacement [7]. It is caused by the limited conductivity of all components of the battery.

This results in the Once production of your article has started, you can track the status iaea your article via Track Your Accepted Article.

isea rwth thesis

The main topics covered by Prof. Simulations with the same parameters as in Fig.