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.

A brief overview of maximum power point tracking algorithm for solar PV system

2021 ◽  
Author(s):  
C. Pavithra ◽  
Pooja Singh ◽  
Venkatesa Prabhu Sundramurthy ◽  
T.S. Karthik ◽  
P.R. Karthikeyan ◽  
...  
Keyword(s):  
Maximum Power Point Tracking ◽  
Tracking Algorithm ◽  
Maximum Power ◽  
Solar Pv ◽  
Pv System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Solar Pv System ◽  
Power Point

An Improved Maximum Power Point Tracking Method for Solar PV System

2013 ◽  
Vol 368-370 ◽  
pp. 1327-1331
Author(s):  
Ya Li Liu ◽  
Ming Li ◽  
Xu Ji ◽  
Xi Luo
Keyword(s):  
Polynomial Interpolation ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Solar Pv ◽  
Improved Method ◽  
Maximum Power Point ◽  
Tracking Method ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

In order to maximize the output power of PV cells, an improved maximum power point tracking method has been proposed in this paper. The approach is a combination of Lagrange polynomial interpolation with perturb and observe (P&O) method. The MPPT method based on output characteristic curve can be rapidly stabilization of operating point in the approximate region near the maximum power point which shortened the response time. A comparison study between the classical P&O method and the improved method is done in order to validate the new MPPT method. The results showed that the oscillations around the MPP for improved method are almost eliminated, and the efficiency of the improved method is an average of 90.4% compared to 66.8% of the classical P&O method.

A Comparative Study on Maximum Power Point Tracking Techniques of Photovoltaic Systems

2018 ◽  
Vol 7 (1) ◽  
pp. 66-85 ◽  
Author(s):  
Afef Badis ◽  
Mohamed Habib Boujmil ◽  
Mohamed Nejib Mansouri
Keyword(s):  
High Efficiency ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Pv System ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Conventional Methods ◽  
Power Point

This article concerns maximizing the energy reproduced from the photovoltaic (PV) system, ensured by using an efficient Maximum Power Point Tracking (MPPT) process. The process should be fast, rigorous and simple for implementation because the PV characteristics are extremely affected by fast changing conditions and Partial Shading (PS). PV systems are popularly known to have many peaks (one Global Peak (GP) and several local peaks). Therefore, the MPPT algorithm should be able to accurately detect the unique GP as the maximum power point (MPP), and avoid any other peak to mitigate the effect of (PS). Usually, with no shading, nearly all the conventional methods can easily reach the MPP with high efficiency. Nonetheless, they fail to extract the GP when PS occurs. To overcome this problem, Evolutionary Algorithms (AEs), namely the Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) are simulated and compared to the conventional methods (Perturb & Observe) under the same software.

scholarly journals Maximum power point tracking of a solar PV array using single stage three phase inverter

2018 ◽  
Vol 7 (2.31) ◽  
pp. 97 ◽  
Author(s):  
M Jayakumar ◽  
V Vanitha ◽  
V Jaisuriya ◽  
M Karthikeyan ◽  
George Daniel ◽  
...  
Keyword(s):  
Solar Power ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Solar Pv ◽  
Maximum Power Point ◽  
Pv Array ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

Solar power is widely available around the globe but efficient transfer of solar power to the load becomes a challenging task. There are various methods in which the power transfer can be done, the following work proposes a method for efficient tracking of solar power.  MPPT [ maximum power point tracking] algorithm applied on three phase voltage source inverter connected to solar PV array with a three phase load. MPPT is applied on inverter rather than conventionally applying MPPT on DC-DC converter. Perturb and Observe method is applied in the MPPT algorithm to find the optimal modulation index for the inverter to transfer maximum power from the panel. Sine pulse width modulation technique is employed for controlling the switching pattern of the inverter. The algorithm is programmed for changing irradiation and temperature condition. The system does not oscillate about the MPP point as the algorithm set the system at MPP and does not vary till a variation in irradiation is sensed.  The proposed system can be installed at all places and will reduce the cost, size and losses compared to conventional system. 

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