Kinetic vibration microgenerator with low output voltage for hydrogen production

The results of the study of the kinetic microgenerator operation features with a re-duced output voltage are presented. A comparison of the performance of a multi-stage modified Bennet doubler and a system including a two-stage modified Bennet doubler and a diode-capacitor voltage divider is carried out. It is shown that with an increase of the number of stages in the modified Bennet doubler, the con-version of mechanical energy into electrical energy becomes less and less efficient. At the same time, in order to obtain the maximum rate of energy accumulation (power), a two-stage power amplifier based on a Bennet doubler is preferable. It is established that during analyzing the operation of a diode-capacitor voltage divider, it is necessary to take into account the intrinsic (reverse) capacitances of the discharging diodes, which significantly affect the operation of the divider. The features of the divider behavior depending the load resistance and the intrinsic capacitances of the discharge diodes are found and analyzed. Analytical expressions linking the main characteristics of the microgenerator as a whole with the parameters of the electronic components used are obtained. It is shown that in order to expand the range of the «correct» division of the divider, it is necessary to use discharging diodes with minimal intrinsic capacitances, as well as connecting a load to the Bennet doubler as a voltage divider changes the permissible capacitance modulation depth of the variable capacitor.

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