scholarly journals A Study of the Switching Power Losses in the Single-Phase Parallel-Type Buck/Boost PFC Converter with the Output-Voltage Ripple Reducing Operation

2014 ◽  
Vol 40 (0) ◽  
pp. 136-143
Author(s):  
Atsushi NAKAJIMA ◽  
Shin-ichi MOTEGI ◽  
Yasuyuki NISHIDA ◽  
Shigeo MASUKAWA
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Power Losses ◽  
Switching Power ◽  
Voltage Ripple ◽  
Parallel Type ◽  
Boost Pfc Converter

scholarly journals High Efficiency DC-DC Converter for Low PV Voltage Sources

2013 ◽  
pp. 9-11
Author(s):  
Sourabh Sinha ◽  
S. M. Ali
Keyword(s):  
Output Voltage ◽  
High Efficiency ◽  
Power Losses ◽  
Dc Voltage ◽  
Switching Power ◽  
Pv Module ◽  
Zero Current ◽  
Voltage Doubler ◽  
High Output Voltage ◽  
High Output

A high efficiency DC-DC converter for low PV voltage sources has been proposed in this paper. The proposed converter converts the low dc voltage to a high dc voltage with a high-efficiency. The proposed converter uses the active clamping circuit and voltage doubler rectifier in order to achieve a high step-up ratio and soft switching operation. The output diodes are turned off at zero-current, which can significantly reduce the switching power losses at high output voltage applications. A high-efficiency of 97.5 % is achieved to generate 350V high output voltage from 36 V low PV module voltages which can be connected to grid tie for ac application.

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