An AC Constant Current Source for Low-voltage Electrical Appliance Testing
In response to the high cost,low accuracy,and limited output current range of the AC constant current source currently used for low-voltage electrical appliance testing,this paper presents a design for an AC constant current source specifically for low-voltage electrical appliance testing.The control section utilizes an STM32 chip based on the ARM core to implement a digital generation algorithm for SPWM waveform.Additionally,a fuzzy PR control algorithm is employed.Through practical experiments,it has been demonstrated that this constant current source offers high output current accuracy,fast speed,and a wide range,capable of delivering alternating currents with effective values ranging from 1 A to 120 A.
low-voltage electrical appliancesconstant current sourcenon-ideal PRfuzzy controller
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