RANCANGBANGUN RANGKAIAN INVERTER SPWM UNIPOLAR 1 FASA DENGAN PENGATURAN FREKUENSI OUTPUT


 Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as motor speed, heater and lamp. Inverter work by rectification first then converted again a 1 phase signal. The output sinosoidal PWM (SPWM) type unipolar 220 volts from input 24 volt voltage. Unipolar SPWM generation microcontroller with programming. number counts (resolutions) period are set amount in register, can be 8 bits or other constants. power part inverter N channel MOSFET bridge circuit H IR2110 solid state driver. Step transformer while step-up Determination frequency through rotary encoder that adjusted up (increment) down (decrement). There 5 variations, namely 30, 40, 50, 60 70 Hz. To get efficiency, used chosen have has low RDS (on) value right driving pulse, according switch configuration. Measurement reading image on osciloscope. observations show almost same constant. test results difference voltage which reduced at 30 watt load.