| Title |
Peak Current Problem and Countermeasures in PWM Voltage Control of Strong Electrolytic Water |
| DOI |
https://doi.org/10.5573/ieie.2021.58.12.88 |
| Keywords |
Strong electrolytic water; Sodium chloride; PWM voltage; Peak current; Linear voltage |
| Abstract |
Strong electrolyzed water refers to strong alkaline water and strong acidic water. Strong alkaline water has a strong cleaning power, and strong acid water has a high sterilizing power, so it is used as disinfecting water. To manufacture strong electrolyzed water, electrolysis is performed by placing the electrolytic space of the anode and the electrolytic space of the cathode in water in which sodium chloride is dissolved, and a diaphragm between them. The voltage for electrolyzing the sodium sulfide solution in the electrolyzer is generally PWM voltage. PWM voltage is a method to easily obtain a variable voltage by adjusting the pulse width to ON and OFF. Water in which sodium chloride is dissolved at a concentration of about 2.5 ppt has very low electrical resistance. Since water in which sodium chloride is dissolved has low electrical resistance, it was confirmed through an experiment that there is a big problem in evaluating only the average current flowing through the electrode for electrolysis. The reason for this problem was confirmed through an experiment, such as component burnout or PCB ignition due to the peak current flowing during the peak voltage. A way to solve this problem is to design the part to a very large specification of 10 times or more. However, the solution presented in this paper is a switching linear power supply, and it has been confirmed that the satisfactory result value of strong electrolytic water and the safe operation of the components. |