输入侧不采用电解电容器的电源转换器

• Format: Patent
• Language: Chinese
• Published: 28.08.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明为种电源转换器，包括桥式整流器、薄膜电容器及直流至直流(DC/DC)转换器。桥式整流器对交流电源输入电压进行整流以产生全波整流电压。薄膜电容器对全波整流电压进行滤波以产生第脉动直流电压。DC/DC转换器的控制电路对第脉动直流电压进行衰减以产生第二脉动直流电压，侦测第二脉动直流电压的波峰值及波谷值，并据以产生值为-(Vx-VH)+PH的过电流保护(OCP)补偿值，其中，Vx为第二脉动直流电压，VH及PH分别为第二脉动直流电压的波谷值及波峰值。控制电路根据OCP设定值加上OCP补偿值所产生的经过补偿的OCP设定值，以对DC/DC转换器进行OCP及定功率输出限制。本发明的有益效果是可实现OCP及定功率输出限制。 A power supply is provided, including a bridge rectifier, a film capacitor and a DC-to-DC converter. The bridge rectifier rectifies an input voltage of an AC power supply to produce a full-wave rectified voltage. The film capacitor filters the full-wave rectified voltage to produce a first pulsating DC voltage. A control circuit of the DC-to-DC converter attenuates the first pulsating DC voltage to produce a second pulsating DC voltage, detects a peak value and a valley value of the second pulsating DC voltage, and produces an OCP compensation value of −(Vx−VH)+PH accordingly, where Vx refers to the second pulsating DC voltage, VH refers to the valley value, and PH refers to the peak value. The control ci