公开(公告)号：US09843253B2

公开(公告)日：2017-12-12

申请号：US14483948

申请日：2014-09-11

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hsien-Feng Hung ,  Yi-Lan Yang ,  Chung-Ping Ku

IPC: H02M7/217 ,  H02M1/14 ,  H02M1/00 ,  H02M1/08 ,  H02M7/219

CPC classification number: H02M1/14 ,  H02M1/081 ,  H02M1/082 ,  H02M7/217 ,  H02M7/2173 ,  H02M7/219 ,  H02M2001/0003 ,  H02M2001/0025

Abstract: A voltage converter includes a voltage conversion circuit, a pulse width modulation (PWM) signal generating module, a feedback controlling module, and a subtractor. The voltage conversion circuit is configured to convert an input voltage to an output voltage according to a PWM signal. The PWM signal generating module is configured to generate the PWM signal according to a control signal. The feedback controlling module is configured to generate the control signal according to a feedback signal. The subtractor is configured to subtract a first reference voltage by the output voltage, to generate the feedback signal. The phase of an AC component of the first reference voltage is substantially opposite to the phase of the input voltage.

公开(公告)号：US08787045B1

公开(公告)日：2014-07-22

申请号：US14051719

申请日：2013-10-11

Applicant: Delta Electronics, Inc.

Inventor： Hsien-Feng Hung ,  Yi-Lan Yang ,  Chung-Ping Ku

IPC: H02M1/12 ,  H02M3/156

CPC classification number: H02M1/12 ,  H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

Abstract: A control method is used in a power factor corrector. Firstly, a current command signal from a computing circuit is received. Then, the current command signal is compared with an input signal of the power conversion circuit, so that a current error signal is generated. If the power factor corrector is operated in a transition interval between the first mode and the second mode, an addition operation is performed on the unadjusted current error signal, a feedforward signal and the adjusted current error signal, thereby generating a current control signal. A switch control signal is generated according to the current control signal. A switching element of a power conversion circuit is controlled according to the switch control signal. Consequently, the harmonic distortion of the input current is inhibited.

Abstract translation: 在功率因数校正器中使用控制方法。 首先，接收来自计算电路的电流指令信号。 然后，将电流指令信号与功率转换电路的输入信号进行比较，从而产生电流误差信号。 如果功率因数校正器在第一模式和第二模式之间的转换间隔中操作，则对未调整的电流误差信号，前馈信号和调整的电流误差信号执行相加操作，从而产生电流控制信号。 根据电流控制信号产生开关控制信号。 根据开关控制信号来控制功率转换电路的开关元件。 因此，输入电流的谐波失真被抑制。