
Hydricity Blog
Electrical Analysis
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With a predicted voltage and power output now quantified, a rectifier circuit was analyzed to study the effects of converting the AC output from the induction system into DC compatible with a battery pack. Figure 10 shows the graph of the input voltage, Vin and the corresponding positive Vout as well as the negative Vout as a function of time. The output amperage is also graphed over time , and is illustrated in Figure 11.
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Figure 10: Plot of Vout (Positive) and Vout (Negative) as Function of Time
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Figure 11: Plot of Outpage Amperage as Function of Time
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The power output analysis determined that the device could generate 12W per hour. The voltage associated with using these nine coils would be 21.44V. Based on these graphs, the peak output voltage is determined. Vin has a maximum value of 21.37V due to the 0.7V voltage drop associated with the rectifier. The Vout, after the capacitor is approximately 19.84 V, signifying a 92.8% efficiency conversion rate. This is extremely satisfactory. This justifies the usage of the rectifier.
Nevertheless, implementing a rectifier creates new challenges as well. Relative to the input voltage, the output voltage from the rectifier is very high. Due to low resistance in the rectifier, both the voltage and amperage are very high. If this electricity were to be input into a battery unit, the battery unit with 0V would charge extremely quickly. This quick charging process would result in significant losses due to extreme build up of heat. Electricity with high voltage that has a very high electron density would experience significant power losses due to heat and run the risk of exploding. To compensate for these potential problems, a voltage regulator will be added. The voltage regulator will act as a current limiter, changing the voltage to correspond with the changing charge rate of the battery. When the battery voltage is low, the input voltage is decreased. As the voltage in the battery increases, the regulator will raise the input voltage to gradually speed up the charging process. The voltage regular functions by providing a step-up of power if the current is too low or a step-down if the current exceeds the threshold. In the case of excess, the additional current will be redirected to ground and dissipated as heat. In the case when additional current is required, a negative feedback loop is implemented to boost the voltage.The voltage regulator appears as Rload in Figure 12 and 13 below.
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Figure 12: Exemplary Voltage Regulator Circuit
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Figure 13: Complete Electrical Schematic
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