scholarly journals Output current ripple reduction of LED driver using ceramic‐capacitor‐input circuit and buck‐boost converter

2019 ◽  
Vol 209 (3-4) ◽  
pp. 26-34 ◽  
Author(s):  
Mitsuhiro Kadota ◽  
Hiroyuki Shoji ◽  
Atsushi Hatakeyama ◽  
Keiji Wada
Keyword(s):  
Boost Converter ◽  
Input Circuit ◽  
Output Current ◽  
Led Driver ◽  
Ceramic Capacitor ◽  
Ripple Reduction ◽  
Current Ripple

Integrated Magnetic Buck-Boost Converter with “Zero” Output Current Ripple

2020 ◽  
pp. 1-1
Author(s):  
Hongyu Zhu ◽  
Donglai Zhang ◽  
Yilong Zhou ◽  
Chaoyang Zhang ◽  
Yueqiao Zhang
Keyword(s):  
Boost Converter ◽  
Output Current ◽  
Current Ripple

scholarly journals Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2734 ◽  
Author(s):  
Guozheng Zhang ◽  
Bingxu Wei ◽  
Xin Gu ◽  
Xinmin Li ◽  
Zhanqing Zhou ◽  
...  
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Small Region ◽  
Output Current ◽  
Switching Sequence ◽  
Output Performance ◽  
Ripple Reduction ◽  
Average Current ◽  
Current Ripple ◽  
Continuous Pulse

This paper presents a sector subdivision based space vector pulse width modulation (SVPWM) strategy with reduced current ripple for a three-level inverter. Using the output current ripple theory, closed-form expressions of average current ripple vectors for both continuous and discontinuous switching sequences are derived. Based on the sector and triangle distributions of conventional SVPWM strategy, each triangle is further divided into three small-regions. Then the switching sequence with the lowest magnitude of the average current ripple vector is applied in every small-region, so that the advantages of continuous pulse width modulation (CPWM) and discontinuous pulse width modulation (DPWM) under different modulation index conditions are combined to reduce the current ripple in the whole modulation range. The output performance of the proposed strategy is compared with the conventional CPWM and DPWM strategy, and experimental results verify that the proposed strategy could reduce the current ripple of three-level inverters effectively.

Optimal space vector pulse width modulation strategy of neutral point clamped three‐level inverter for output current ripple reduction

2017 ◽  
Vol 10 (12) ◽  
pp. 1638-1646 ◽  
Author(s):  
Wei Chen ◽  
Wenkai Dai ◽  
Zhiqiang Wang ◽  
Guozheng Zhang ◽  
Yan Yan ◽  
...  
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Neutral Point ◽  
Output Current ◽  
Space Vector ◽  
Ripple Reduction ◽  
Optimal Space ◽  
Current Ripple
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