Power factor correction transducer capable of parallel working

• Main Authors: YAN XING, CHENGBAI ZHU
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2004
• Edition: 7
• 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 IN THE PRODUCTION ORPROCESSING OF GOODS; 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

The invention relates to a power factor correcting converter which can work in parallel, it includes a commutation bridge, input inductance(L), switch pipe (Q), diode D, output filter capacitance, two current mutual conductor (CT1 and CT2) and input current sampling circuit made up of sampling resistance (Rs), the character lies in: it also includes a output current sampling circuit made up of diode (D3) and sampling resistance (Rso) on base of the input current sampling circuit, thus forms the power factor correcting converter with the input and output current synthesis sampling circuit, which realizes the sample to input and output current at the same time, but does not increase the current sampling mutual inductor, it simplifies the circuit and reduces the cost, the power density of the converter is upgraded. 一种可并联工作的功率因数校正变换器，包括由整流桥，输入电感(L)，开关管(Q)，二极管D，输出滤波电容，两个电流互感器(CT#-[1]与CT#-[2])与采样电阻(R#-[s])组成的输入电流采样电路等，其特点是还包括在输入电流采样电路的基础上再增加一路由二极管(D#-[3])与采样电阻(R#-[so])组成的输出电流采样电路，从而构成了本发明的带输入输出电流综合采样电路的功率因数校正变换器，实现了在不增加电流采样互感器的前提下，可以同时采样输入和输出电流，达到了功率因数校正和并联均流控制的目的，并且还简化了电路，降低了成本，提高了变换器的功率密度。