Simulation and Analysis of a Buck Converter Based on an Arduino PWM Signal Using a Single Cell Li-Ion Load

2019 ◽  
Author(s):  
Wing Wira Adimas Ramadhan ◽  
Tomy Abuzairi
Keyword(s):  
Single Cell ◽  
Buck Converter ◽  
Li Ion

scholarly journals A High-Performance 75 W Direct Ammonia Fuel Cells Stack

2021 ◽  
Author(s):  
Teng Wang ◽  
Yun Zhao ◽  
Brian P. Setzler ◽  
Reza Abbasi ◽  
Shimshon Gottesfeld ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Single Cell ◽  
High Performance ◽  
Electric Energy ◽  
Power Source ◽  
Bipolar Plates ◽  
Attractive Option ◽  
Li Ion ◽  
Spinel Cathode ◽  
First Time

Ammonia can be directly used as fuel to generate electric energy in a low-temperature direct ammonia fuel cell (DAFC), making the DAFC an attractive option for zero-emission transportation. However, with a high-performance and durable DAFC still to be demonstrated, and with the remaining need to identify a suitable first market, the introduction of this technology has been delayed so far. Here, we report a high-performance DAFC stack enabled by a hydrophobic spinel cathode, which achieves the best combination of performance and durability reported to date. Peak power density of 410 mW cm-2 and continuous operation for 80 hours at 300 mA cm-2 were achieved for the first time in 5 cm2 DAFCs, and then successfully scaled up to 50 cm2. Five such cells were assembled into a 75 W DAFC stack using graphite bipolar plates, demonstrating stack performance at the level expected from the single cell tests. The best combination of performance and durability for the single cell and, particularly, the demonstration of the world’s first DAFC bipolar stack, constitute significant milestones in the development of DAFC technology. We also performed an in-depth techno-economic analysis of a 2 kW, 10 kWh DAFC system serving as power source for drones. Based on the DAFC performance demonstrated by us to date, such system can be a competitive power source over hydrogen fuel cells and Li-ion batteries.

From single cell model to battery pack simulation for Li-ion batteries

2009 ◽  
Vol 186 (2) ◽  
pp. 500-507 ◽  
Author(s):  
Matthieu Dubarry ◽  
Nicolas Vuillaume ◽  
Bor Yann Liaw
Keyword(s):  
Single Cell ◽  
Cell Model ◽  
Battery Pack ◽  
Li Ion Batteries ◽  
Single Cell Model ◽  
Li Ion

scholarly journals Experimental implementation of a smart battery charger for electric vehicles charging station

2020 ◽  
Vol 11 (4) ◽  
pp. 1689
Author(s):  
Abdelilah Hassoune ◽  
Mohamed Khafallah ◽  
Abdelouahed Mesbahi ◽  
Ayoub Nouaiti ◽  
Tarik Bouragba
Keyword(s):  
Real Time ◽  
Electric Vehicles ◽  
Control Strategy ◽  
Closed Loop ◽  
Buck Converter ◽  
Li Ion Battery ◽  
Battery Charger ◽  
Charging Station ◽  
Test Platform ◽  
Li Ion

In this paper, an implementation of a DC/DC buck converter for electric vehicles charging station and a DSP based closed-loop digital controller design are presented and analyzed. The aim of this work is to achieve an improved control strategy for a Li-ion battery charger implemented on a Real-time test platform. The test platform consists of a popular power pole board (MPCA75136) dedicated to studying the DC/DC converters, and a DSP development kit (TMS320F28379D) that is used to drive the DC/DC buck converter. The control strategy is based on a digital control system containing the closed-loop current controller followed by a pulse width modulation block, and on a real time state of charge estimation technique for a Li-ion battery. However, the overall control design is modeled on Simulink via block diagrams, and automatically generated code that is targeted into the DSP processor. Simulation and experimental results have shown the effectiveness of the proposed test bench and its external digital control strategy via a charging scenario for electric vehicles batteries.

scholarly journals Pengaruh Beban dan Filter pada Penyearah AC-DC Terkendali untuk Rangkaian Pengisi Li-ion Berbasis Bridge Rectifier dan Buck Converter Menggunakan Metode CC/CV

2021 ◽  
Vol 9 (1) ◽  
pp. 88-98
Author(s):  
Alif Pradana Hakim ◽  
Sena Sukmananda Suprapto ◽  
Mifta Nur Farid
Keyword(s):  
Direct Current ◽  
Duty Cycle ◽  
Alternating Current ◽  
Buck Converter ◽  
Constant Current ◽  
Rectification Ratio ◽  
Constant Voltage ◽  
Bridge Rectifier ◽  
Li Ion

Saat ini, banyak perangkat elektronik yang menggunakan baterai sebagai sumber dayanya seperti handphone dan laptop. Sebuah charger baterai yang bersumber AC (Alternating Current) memiliki sebuah penyearah AC ke DC (Direct Current). Keluaran penyearah AC-DC tidak sesuai untuk pengisian CC/CV (Constant Current/Constant Voltage), sehingga diperlukan buck converter untuk menghasilkan nilai yang diinginkan. Selain itu, penyearahan AC-DC membawa ripple yang dapat merusak baterai dan mempengaruhi rectification ratio (RR), sehingga memerlukan filter untuk mengurangi ripple dan meningkatkan rectification ratio. Percobaan dilakukan pada kondisi arus konstan atau CC 1,5A dan kondisi tegangan konstan atau CV 4,2V menggunakan variasi beban. Pada percobaan CC, diketahui bahwa peningkatan beban akan menyebabkan peningkatan duty cycle yang dibutuhkan. Pada uji coba CV, diperoleh hasil bahwa peningkatan beban menyebabkan pengurangan duty cycle yang dibutuhkan. Penggunaan filter pada kondisi CC dan CV dapat mengurangi ripple dan meningkatkan RR. Pada kondisi CC, ripple matematis, simulasi, dan uji coba secara berturut-turut berkurang 46,45%, 46,43%, dan 45,46%. RR matematis, simulasi, dan uji coba secara berturut-turut meningkat 18,17%, 18,17%, dan 21,59%. Pada kondisi CV, ripple matematis, simulasi, dan uji coba secara berturut-turut berkurang 46,44%, 46,6%, dan 48,78%. RR matematis, simulasi, dan uji coba secara berturut-turut meningkat 18,17%, 18,17%, dan 20,99%. Pengisian Li-ion 3Ah memakan waktu 4 jam 58 detik. Dimana pengisian CC selama 32 menit 10 detik dan pengisian CV selama 3 jam 28 menit 48 detik. Pada pengisian CC duty cycle meningkat saat terjadinya peningkatan tegangan baterai. Sedangkan pada pengisian CV, duty cycle menurun saat berkurangnya arus pengisian.

scholarly journals A High-Performance 75 W Direct Ammonia Fuel Cells Stack

2021 ◽  
Author(s):  
Teng Wang ◽  
Yun Zhao ◽  
Brian P. Setzler ◽  
Reza Abbasi ◽  
Shimshon Gottesfeld ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Single Cell ◽  
High Performance ◽  
Electric Energy ◽  
Power Source ◽  
Bipolar Plates ◽  
Attractive Option ◽  
Li Ion ◽  
Spinel Cathode ◽  
First Time

Ammonia can be directly used as fuel to generate electric energy in a low-temperature direct ammonia fuel cell (DAFC), making the DAFC an attractive option for zero-emission transportation. However, with a high-performance and durable DAFC still to be demonstrated, and with the remaining need to identify a suitable first market, the introduction of this technology has been delayed so far. Here, we report a high-performance DAFC stack enabled by a hydrophobic spinel cathode, which achieves the best combination of performance and durability reported to date. Peak power density of 410 mW cm-2 and continuous operation for 80 hours at 300 mA cm-2 were achieved for the first time in 5 cm2 DAFCs, and then successfully scaled up to 50 cm2. Five such cells were assembled into a 75 W DAFC stack using graphite bipolar plates, demonstrating stack performance at the level expected from the single cell tests. The best combination of performance and durability for the single cell and, particularly, the demonstration of the world’s first DAFC bipolar stack, constitute significant milestones in the development of DAFC technology. We also performed an in-depth techno-economic analysis of a 2 kW, 10 kWh DAFC system serving as power source for drones. Based on the DAFC performance demonstrated by us to date, such system can be a competitive power source over hydrogen fuel cells and Li-ion batteries.

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