scholarly journals Input-Parallel Output-Series DC-DC Boost Converter With a Wide Input Voltage Range, For Fuel Cell Vehicles

2017 ◽  
Vol 66 (9) ◽  
pp. 7771-7781 ◽  
Author(s):  
Ping Wang ◽  
Lei Zhou ◽  
Yun Zhang ◽  
Jing Li ◽  
Mark Sumner
2017 ◽  
Vol 32 (9) ◽  
pp. 6728-6738 ◽  
Author(s):  
Yun Zhang ◽  
Jilong Shi ◽  
Lei Zhou ◽  
Jing Li ◽  
Mark Sumner ◽  
...  

2018 ◽  
Vol 15 (2) ◽  
pp. 165-186
Author(s):  
Naik Venkatesh ◽  
Paulson Samuel

The voltage produced by the fuel cell (FC) device is unregulated and varies from 0.4 V to 0.8 V on full load to no-load respectively. When these devices are used in low voltage applications and output voltage lies between higher and lower values of input voltage range, it is required to connect a DCDC buck-boost converter to get a fixed output voltage. In this paper, a new noninverting multi device buck boost converter (MDBBC) is proposed, in which the multi device buck and boost converters are connected in cascade and operate individually either in buck or boost operating modes. The paper also includes the steady state analysis of MDDBC based on the state space averaging technique. A prototype model of proposed converter compatible with FCS-1000 Horizon FC model with rating of 270 W, 36 V is designed and developed. The proposed converter is experimentally validated with the results obtained from the prototype model, and results show the superiority of the converter with higher efficiency and lesser ripple current observed under steady state operation of the converter.


2019 ◽  
Vol 54 (11) ◽  
pp. 3118-3134 ◽  
Author(s):  
Yang Jiang ◽  
Man-Kay Law ◽  
Zhiyuan Chen ◽  
Pui-In Mak ◽  
Rui P. Martins

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 717 ◽  
Author(s):  
Jintae Kim ◽  
Chung-Yuen Won

An improved modulated carrier control (MCC) method is proposed to offer high power factor (PF) and low total harmonic distortion (THD) at a wide input voltage range and load variation. The conventional MCC method not only requires a multiplier and divider, but also is hard to be implemented with a micro controller unit without a high frequency oscillator. To overcome the problem and maintain the advantages of the conventional MCC method, the proposed MCC method adopts a current integrator, an output voltage amplifier, a zero-current duration (ZCD) demodulator of the boost inductor, and a carrier generator. Thus, it can remove a multiplier and well, as it allows for being operable with a general micro control unit. This paper presents an operation principle of the proposed control method. To verify the proposed control method, experimental results with 400 W PFC boost converter is demonstrated.


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