scholarly journals Design and development of three stages maximum power tracking solar charge controller

2020 ◽  
Vol 18 (3) ◽  
pp. 1270
Author(s):  
N.H. Abdul Rahman ◽  
A. M. Omar ◽  
E. H. Mat Saat ◽  
N. I. Ilham ◽  
M. Z. Hussin ◽  
...  
Keyword(s):  
Low Voltage ◽  
Buck Converter ◽  
Maximum Power ◽  
Battery Charging ◽  
Set Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Bulk Absorption ◽  
Three Stages ◽  
Power Point

<span>This paper presents the design of a Three Stages Maximum Power Point Tracking (MPPT) charge controller for improving the charging/discharging control of the battery. In this research, Buck Converter is used to regulate the voltage from the Photovoltaic (PV) module to the required voltage. This research is limited to Valve Regulated Lead Acid (VRLA) battery for 12V system voltage. The charge control algorithm envisages controlling the charging and discharging action in all the three stages of battery charging, bulk, absorption, and float. The idea is to control the battery charging and discharging status until meeting the battery set-point. The set-point is limited to High Voltage Disconnect (HVD), Low Voltage Disconnect (LVD) and Load Voltage Reconnect (LVR) to protect the battery from over-charging and deep-discharging. The results obtained demonstrate the good performance of the charge controller. With the application of the MPPT algorithm in the bulk stage, the time taken to get the battery to fully charged state becomes faster The regulation power from the converter to the inverter has performed well and the switching relay is managed to be controlled.</span>

Solar powered battery charging scheme for light electric vehicles (LEVs)

2021 ◽  
Vol 22 (1) ◽  
pp. 101-111
Author(s):  
Kamal Singh ◽  
Anjanee Kumar Mishra ◽  
Bhim Singh ◽  
Kuldeep Sahay
Keyword(s):  
Electric Vehicles ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Battery Charging ◽  
Charging System ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Solar Powered ◽  
Power Point ◽  
Conduction Mode

Abstract This work is targeted to design an economical and self-reliant solar-powered battery charging scheme for light electric vehicles (LEV’s). The single-ended primary inductance converter (SEPIC) is utilized to enhance the performance of solar power and battery charging at various solar irradiances. Various unique attributes of a SEPIC converter offer the effective charging arrangement for a self-reliant off-board charging system. Further, the continuous conduction mode (CCM) function of the converter minimizes the elementary stress and keeps to maintain the minimum ripples in solar output parameters. A novel maximum power point tracking (MPPT) approach executed in the designed system requires only the battery current to track the maximum power point (MPP) at various weather situations. Both the simulated and real-time behaviors of the developed scheme are examined utilizing a battery pack of 24 V and 100 Ah ratings. These responses verify the appropriateness of the designed system for an efficient off-board charging system for LEV’s.

scholarly journals A Novel Control Strategy for PV/Wind/Battery Hybrid System Using High Gain Boost Converter

2021 ◽  
Vol 7 (03) ◽  
pp. 295-303
Keyword(s):  
Energy Management ◽  
Control Strategy ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Pi Control ◽  
Maximum Power Point ◽  
Battery Charging ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

In this paper, a classic proportional–integral (PI) control strategy as an energy management strategy (EMS) and a microgrid stand-alone power system configuration are proposed to work independently out of grid. The proposed system combines photovoltaics (PVs), and Battery. The system supplies a dump load with its demand power. The system includes DC/DC and DC/AC converters, as well as a maximum power point tracking (MPPT) to maximize the harvested energy from PV array. The classic PI control strategy is used to control the main system parameters like state-of-charge (SOC) for the battery. The corresponding energy management and control strategy are proposed to realize the power balance among three ports in different operating scenarios, which comprehensively takes both the maximum power point tracking (MPPT) benefit and the battery charging/discharging management into consideration. The simulations are conducted using the Matlab/Simulink software to verify the operation performance of the proposed PV/battery hybrid distributed power generation system with the corresponding control algorithms, where the MPPT control loop, the battery charging/discharging management loop are enabled accordingly in different operating scenarios.

Design and Implementation of New Topology for Nonisolated DC–DC Microconverter with Effective Clamping Circuit

2019 ◽  
Vol 28 (05) ◽  
pp. 1950082 ◽  
Author(s):  
M. Premkumar ◽  
T. R. Sumithira
Keyword(s):  
High Efficiency ◽  
Low Voltage ◽  
Maximum Power ◽  
Voltage Gain ◽  
Solar Pv ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Low Duty Cycle ◽  
Power Point ◽  
Voltage Spike

This paper presents nonisolated DC–DC converter which suits for solar photovoltaic (PV) applications. The DC–DC converter proposed in this paper utilizes coupled inductor, voltage boost capacitor and passive clamp circuit to achieve desired voltage gain and the passive clamp circuit will help the converter to accomplish high efficiency. To minimize the voltage spike/ringing across MOSFET drain-source and to recover the coupled inductor leakage energy, the RCD clamp circuit is used. The voltage lift capacitor along with the clamp circuit helps in increasing the voltage gain of the converter. The proposed converter offers low voltage stress on MOSFET and diode, low-coupled inductor turns ratio with low duty cycle. The converter is analyzed and simulated with PLECS standalone simulating environment for all aspects of the clamp circuit. The simulation results are compared with RCD and other clamping circuits to verify the performance of the proposed converter. The converter is also compared with active clamping to discuss the effectiveness of passive clamping circuit. To track the maximum power from the solar PV module, the conventional maximum power point tracking (MPPT) techniques are used. The prototype is designed and implemented for 150W and experimental results are verified.

Autonomous Flyback Converter for Energy Harvesting from Microbial Fuel Cells

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
F. Khaled ◽  
B. Allard ◽  
O. Ondel ◽  
C. Vollaire
Keyword(s):  
Fuel Cells ◽  
Energy Harvesting ◽  
Microbial Fuel Cells ◽  
Low Voltage ◽  
Maximum Power ◽  
Flyback Converter ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Start Up ◽  
Power Point

Cover letterAn autonomous flyback converter was designed for energy harvesting from Microbial Fuel Cells (MFCs). The circuit was optimized to minimize the losses and maximize the efficiency. A Maximum Power Point Tracking (MPPT) algorithm was implanted in the converter to extract the maximum power available from MFC. Discontinuous conduction mode operation of the flyback allows controlling the MPP operation by impedance matching. The flyback can start-up at low voltage, around 300 mV. The output open circuit voltage is about 20 V and the voltage at MPP is 6.4 V with a maximum efficiency of 71.2%.: Microbial fuel cells (MFCs) use bacteria as the catalysts to oxidize organic matter and generate electricity. This energy can be used to supply low power electronic systems. A power management unit between the MFCs and the load is required to adapt the voltage and control the operation. The low voltage and low power characteristics of MFCs prohibit the use of standard converter topologies since the threshold voltage of standard CMOS transistors in CMOS technology is higher than the output voltage of MFCs. A low-voltage start-up sub-circuit is required to charge a primary capacitor to supply the driver. A specific sub-circuit is also required to control the operation of MFCs for Maximum Power Point Tracking (MPPT) issues. An optimized Discontinuous Conduction Mode (DCM) autonomous flyback converter for energy harvesting is presented for ambient sources, like MFCs. The converter is designed, fabricated, and tested. An MPPT algorithm is integrated in the system to control the operation and to extract the maximum available power from the MFC. The converter is able of start and step-up MFC output voltage to a value higher than 3 V under load. The peak efficiency of the converter is 71.2%.

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