Input voltage estimation method and suppression of distortion caused by DC voltage ripple for input current control of PFC

IF 0.4 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electrical Engineering in Japan Pub Date : 2022-10-21 DOI:10.1002/eej.23406

Ryuji Yamada, Ryunosuke Araumi, Keiji Wada

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Abstract

This paper proposes a new method for input current control of power factor correction (PFC) with continuous conduction mode (CCM), which does not require input voltage detection. As a control method that does not use input voltage detection, pulse width modulation (PWM) with the inductor current as the modulated signal is already in practical use however, this approach has limitations for the range of inductance values used. In CCM-PFC, the input rectified voltage and low-frequency component of the voltage of the switching circuit are approximately equal in the stable state as well as proportional to the PWM signal. This study uses the previous modulated signal as the estimated voltage value to generate an instantaneous current command for feedback control. In addition, a method to suppress the influence of the DC voltage ripple by changing the voltage control gain according to the value of the DC voltage was employed. From the evaluation, it was confirmed that the harmonics of the input current were suppressed within the specified range of values.

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PFC输入电流控制的输入电压估计方法及直流电压纹波畸变抑制

提出了一种不需要检测输入电压的连续导通(CCM)功率因数校正(PFC)输入电流控制方法。作为一种不使用输入电压检测的控制方法，以电感电流作为调制信号的脉宽调制(PWM)已经在实际应用中，但这种方法在使用的电感值范围上存在局限性。在CCM-PFC中，输入整流电压和开关电路电压的低频分量在稳定状态下近似相等，并与PWM信号成正比。本研究使用先前调制的信号作为估计的电压值，产生瞬时电流命令进行反馈控制。此外，还采用了根据直流电压值改变电压控制增益的方法来抑制直流电压纹波的影响。从评估中，确认输入电流的谐波在规定的值范围内被抑制。

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来源期刊

Electrical Engineering in Japan 工程技术-工程：电子与电气

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Electrical Engineering in Japan (EEJ) is an official journal of the Institute of Electrical Engineers of Japan (IEEJ). This authoritative journal is a translation of the Transactions of the Institute of Electrical Engineers of Japan. It publishes 16 issues a year on original research findings in Electrical Engineering with special focus on the science, technology and applications of electric power, such as power generation, transmission and conversion, electric railways (including magnetic levitation devices), motors, switching, power economics.