CAJ | 학술논문

针对现今市面上的AC-DC变换器多使用模拟控制且输入阻抗呈容性，存在着体积大，功率因数低和输出纹波大等不足，研制了以UC3854为核心的高功率因数变换器．利用脉冲宽度调制技术（ Pulse width modulation ， PWM），采用平均电流控制策略，通过对Boost电路的输入电压相位和输入电流相位进行调整，使输入电压和输入电流之间的相位差接近0．仿真和试验结果表明，此电路控制简单、输出电压和电流稳定且功率因数较高，同时能减少对电网的污染．
침대현금시면상적AC-DC변환기다사용모의공제차수입조항정용성，존재착체적대，공솔인수저화수출문파대등불족，연제료이UC3854위핵심적고공솔인수변환기．이용맥충관도조제기술（ Pulse width modulation ， PWM），채용평균전류공제책략，통과대Boost전로적수입전압상위화수입전류상위진행조정，사수입전압화수입전류지간적상위차접근0．방진화시험결과표명，차전로공제간단、수출전압화전류은정차공솔인수교고，동시능감소대전망적오염．
AC-DC converters on market were usually used analog controller with large volume and lot of output ripples , even the power factor was low .To overcome those limitations , a high power factor con-verter was developed with the core of UC 3854, using PWM ( Pulse width modulation ) technology and av-erage current control strategy .When the Boost circuit ’ s input voltage phase and input current phase were adjusted, the phase between input voltage and current would close to 0, power factor close to 1.Simula-tion and test results showed that:the circuit ’ s output voltage ripple was small and its output current and voltage were stable .It also had a very broad application prospects .