Dynamical effects of composite output capacitors on current‐mode controlled buck converter with constant current load

2017 ◽  
Vol 10 (4) ◽  
pp. 490-498 ◽  
Author(s):  
Mingrui Leng ◽  
Guohua Zhou ◽  
Xiaotian Liu ◽  
Shungang Xu
Keyword(s):  
Current Mode ◽  
Buck Converter ◽  
Constant Current ◽  
Current Load

COMPLEX DYNAMICS AND FAST-SLOW SCALE INSTABILITY IN CURRENT-MODE CONTROLLED BUCK CONVERTER WITH CONSTANT CURRENT LOAD

2013 ◽  
Vol 23 (04) ◽  
pp. 1350062 ◽  
Author(s):  
GUOHUA ZHOU ◽  
BOCHENG BAO ◽  
JIANPING XU
Keyword(s):  
Complex Dynamics ◽  
Period Doubling ◽  
Current Mode ◽  
Input Voltage ◽  
Second Order ◽  
Buck Converter ◽  
Constant Current ◽  
Current Load ◽  
Time Model ◽  
Conduction Mode

The complex dynamics and coexisting fast-slow scale instability in current-mode controlled buck converter with constant current load (CCL), operating in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), are investigated in this paper. Via cycle-by-cycle computer simulation and experimental measurement of current-mode controlled buck converter with CCL, it is found that a unique fast-slow scale instability exists in the second-order switching converter. It is also found that a unique period-doubling accompanied by Neimark–Sacker bifurcation exists in this simple second-order converter, which is different from period-doubling or Neimark–Sacker bifurcations reported previously. Based on a nonlinear discrete-time model and the corresponding Jacobian, the effects of CCL and input voltage on the dynamics of current-mode controlled buck converter are investigated and verified theoretically. Fixed point analysis for slow-scale low-frequency oscillation is also given to verify the dynamics and the coexisting fast-slow scale instability.

Dynamics and stabilization of peak current-mode controlled buck converter with constant current load

2015 ◽  
Vol 24 (10) ◽  
pp. 100504 ◽  
Author(s):  
Min-Rui Leng ◽  
Guo-Hua Zhou ◽  
Kai-Tun Zhang ◽  
Zhen-Hua Li
Keyword(s):  
Current Mode ◽  
Buck Converter ◽  
Constant Current ◽  
Current Load ◽  
Peak Current

scholarly journals A Smart Two-Stage Charging Strategy Implemented on a PV Module Array with a Simple MPPT for LiFePO4 Batteries

2018 ◽  
Author(s):  
Pi-Yun Chen ◽  
Kuei-Hsiang Chao ◽  
Yu-Sheng Tsai
Keyword(s):  
High Speed ◽  
Current Mode ◽  
Buck Converter ◽  
Constant Current ◽  
Storage Device ◽  
Photovoltaic Module ◽  
Constant Voltage ◽  
Battery Charger ◽  
Two Stage ◽  
Charging Strategy

This paper aims to present a smart high speed battery charger, powered by a photovoltaic module array, for a LiFePO4 battery as a solar energy storage device. With a battery charging strategy, the presented battery charger involves a Buck converter as the core equipped with a simple maximum power point (MPP) tracker. Considering complexity reduction and easy hardware implementation, a constant voltage MPP tracking approach is adopted such that the maximum amount of output power can be delivered to the load in response to an arbitrary change in the solar radiation. A smart two-stage charging strategy, with a constant current mode followed by a constant voltage mode, is employed in such a way that the battery charge process can be accelerated largely, while the damage caused by overcharging can be prevented. In the end, the performance of this proposal is validated experimentally.

scholarly journals The Electrical Motorcycle Charger for Application in a Residence

2020 ◽  
Vol 186 ◽  
pp. 03002
Author(s):  
Chaiyan Jettanasen ◽  
Chaichan Pothisarn
Keyword(s):  
Storage System ◽  
Current Mode ◽  
Energy Storage System ◽  
Buck Converter ◽  
Constant Current ◽  
Constant Voltage ◽  
Battery Charging ◽  
Initial Voltage ◽  
Charging Time ◽  
Charge Process

The aim of this paper is to design the charger for an electric motorcycle and analyze the behavior of voltage and current value during charging. The AC voltage supply from a residence is converted to DC voltage to charge the energy storage system by controlling the voltage and current values suitable for the charge process in all periods. The designed charger is based on the principle of a buck converter with using constant current and constant voltage technique in order to charge a 12 V, 21 Ah lead-acid battery inside the electric motorcycle. By considering the results, the first state of battery charging is a constant current mode by using the current of 5 A with the initial voltage of 55 V. In the second mode, the battery charging is done by constant voltage of 72 V and the current is reduced until the battery is full. Moreover, the charging time is about 6-8 hours.

scholarly journals A Current-Mode Four-Phase Synchronous Buck Converter with Dynamic Dead-Time Control

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Jun Tang ◽  
Tian Guo ◽  
Jung Sik Kim ◽  
Jeongjin Roh
Keyword(s):  
Dead Time ◽  
Current Mode ◽  
Buck Converter ◽  
Time Control ◽  
A Current
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