2026-04-17T06:43:31Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/2381 2021-12-13T02:58:57Z 1582963390870:1582967549708 user-uy

Development of Constant Current Charge Controller for 3KW Wind Turbine Aye Aye Zaw Min Naing Chaw Myat Nwe This paper describes the development of constant current charge controller for 3kW wind turbine designing with 48VAC PM alternator. As the wind speed is not constant, the output voltage from the wind turbine is always changing. In the circuit design, the changing voltage is sent to the 48V battery bank (series connection with 12V 200Ah batteries) by using the constant current charging method to extend the battery life. It does not only provide the two-step charging; the first step for the slow charging and the second step for the fast charging, but also use the overheat sensing circuit to prevent the damage of the expensive battery bank. In this work, the controller circuit operates properly switching first stage or second stage alternately depending on the full/low battery voltage. Unfortunately, if the overheating condition appears in the circuit, the cut-out circuit using temperature sensor decides to stop charging. To indicate clearly the battery charging conditions, the LCD display unit using the microcontroller is provided in the circuit design. The current sensing circuit is also added to show the battery charging current on the LCD display through the microcontroller. In this paper, the voltage comparator circuit, the two-step charging circuit, the overheating sensing circuit and the LCD display are described by simulating with Proteus (ISIS) software 2010 http://hdl.handle.net/20.500.12678/0000002381 https://meral.edu.mm/records/2381