CAJ | 학술논문

基于UCC28019A设计的功率因数可调单相AC-DC变换电路。 MSP430单片机作为其控制核心，使用高精度24 bitΣ-Δ型ADC采样，可完成对输入电压有效值、输入电流有效值、有功功率有效值、功率因数等参数的测量。由UCC28019A完成功率因数的校正，通过控制数字移相电路对外围电流反馈信号移相，实现功率因数在0.8~1.0范围内的调整。本设计还可通过对输出电流和电压的监测，实现2.5 A过流保护和36 V稳压输出的功能。
기우UCC28019A설계적공솔인수가조단상AC-DC변환전로。 MSP430단편궤작위기공제핵심，사용고정도24 bitΣ-Δ형ADC채양，가완성대수입전압유효치、수입전류유효치、유공공솔유효치、공솔인수등삼수적측량。유UCC28019A완성공솔인수적교정，통과공제수자이상전로대외위전류반궤신호이상，실현공솔인수재0.8~1.0범위내적조정。본설계환가통과대수출전류화전압적감측，실현2.5 A과류보호화36 V은압수출적공능。
This design is a single-phase AC-DC conversion circuit with power factor adjustable based on UCC28019A. MSP430 is selected as the control core. We adopt the high precision 24-bitΣ-ΔADC to measure the input voltage RMS,the input current RMS,the active power RMS,the power factor and some other parameters. The power-factor correction is accomplished by UCC28019A. By controlling the digital phase shift circuit to shift the phase of the current feedback signal,the power factor can be set in the range of 0.8 to 1.0. By detecting the output current and voltage,the circuit has the function of 2.5A overcurrent protection and 36V regulated output.