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Conductive ceramic as additive in the lead-acid accumulators
Šrut, Martin ; Křivík, Petr (referee) ; Bača, Petr (advisor)
Lead-acid batteries are most used secondary electrochemical power sources. Their basic principle has remained the same for several years; only the operating parameters are in development. Lead-acid batteries are used in hybrid electric vehicles (HEV), which operates in the partial charge PSoC. Sulphation is one of the possible failures lead-acid batteries in the HEV, especially the negative electrode. By adding additives to the negative active mass can reduce the rate of sulphation and increase ability to accept an electrical charge by negative electrode.
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PSpice library of circuit elements with selfheating
Šrut, Martin ; Petržela, Jiří (referee) ; Kolka, Zdeněk (advisor)
This bachelor´s thesis is devoted to the topic PSpice library of circuit elements with selfheating, which deals with the lack of temperature in the PSpice and design models of the resistor, diode and transistor to the treatment of this problem. The thesis describes theoretically Electrothermal analogy, creating a thermal equivalent circuit model and the theory of creation diodes and transistors. The next step is a theoretical design procedure of general circuit, theory of system libraries and netlist in PSpice and a description of ways of creating subcircuits. Their own solution the whole thesis is creating a model of a resistor, diode and transistor with self-heating. Furthermore, the results are shown simulations of the models. Transistor model is tested on the output stage audio amplifier together with a model heatsink.
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PSpice library of circuit elements with selfheating
Šrut, Martin ; Petržela, Jiří (referee) ; Kolka, Zdeněk (advisor)
This bachelor´s thesis is devoted to the topic PSpice library of circuit elements with selfheating, which deals with the lack of temperature in the PSpice and design models of the resistor, diode and transistor to the treatment of this problem. The thesis describes theoretically Electrothermal analogy, creating a thermal equivalent circuit model and the theory of creation diodes and transistors. The next step is a theoretical design procedure of general circuit, theory of system libraries and netlist in PSpice and a description of ways of creating subcircuits. Their own solution the whole thesis is creating a model of a resistor, diode and transistor with self-heating. Furthermore, the results are shown simulations of the models. Transistor model is tested on the output stage audio amplifier together with a model heatsink.
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Conductive ceramic as additive in the lead-acid accumulators
Šrut, Martin ; Křivík, Petr (referee) ; Bača, Petr (advisor)
Lead-acid batteries are most used secondary electrochemical power sources. Their basic principle has remained the same for several years; only the operating parameters are in development. Lead-acid batteries are used in hybrid electric vehicles (HEV), which operates in the partial charge PSoC. Sulphation is one of the possible failures lead-acid batteries in the HEV, especially the negative electrode. By adding additives to the negative active mass can reduce the rate of sulphation and increase ability to accept an electrical charge by negative electrode.
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