scholarly journals Design of Single Inductor and Two Output DC - DC Converter

2020 ◽  
pp. 54-59
Author(s):  
S. Inbasakaran ◽  
Mahesh. K ◽  
Lithesh. J
Keyword(s):  
Output Voltage ◽  
Input Voltage ◽  
Power Supplies ◽  
Electronic Systems ◽  
Minimum Loss ◽  
Voltage Level ◽  
Dc Voltage ◽  
Electronic Circuitry ◽  
Dc Power ◽  
Common Goals

<p>A DC-DC converter is used to convert from one DC voltage level to another DC voltage level. The output voltage may be increased or decreased when compare to the input voltage based on the circuit topology. DC – DC converters are mainly used as a regulated and isolated power supplies in many applications. Regulated dc power supplies are needed for most analog and digital electronic systems. Most power supplies are designed to meet some or all of the following requirements:</p> <p><strong>Regulated output: </strong>The output voltage must be kept constant with respect to the change in output loading.</p> <p><strong>Isolation: </strong>The output may be required to be electrically isolated from the input.</p> <p>In addition to these requirements, common goals are to reduce power supply size and weight and improve their efficiency. A few applications of DC-DC converters are where 5V DC on a personal computer motherboard must be stepped down to 3V, 2V or less for one of the latest CPU chips; where 1.5V from a single cell must be stepped up to 5V or more, to operate electronic circuitry. The main focus in this paper is to generate dc voltage from a one level to other level with minimum loss. The need for such converters has risen due to the fact that transformers are unable to function on dc.</p>

scholarly journals Design and development of SEPIC DC-DC boost converter for photovoltaic application

2019 ◽  
Vol 10 (1) ◽  
pp. 406 ◽  
Author(s):  
Ibrahim Alhamrouni ◽  
M. K. Rahmat ◽  
F. A. Ismail ◽  
Mohamed Salem ◽  
Awang Jusoh ◽  
...  
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Input Voltage ◽  
Dc Voltage ◽  
Photovoltaic Application ◽  
Dc Power ◽  
Power Switch ◽  
High Voltage Gain ◽  
Wide Range ◽  
New Construction

This study highlights a new construction of SEPIC DC-DC converter. The proposed converter aims for some features such as high voltage gain, continuous input current and reduce stress on the power switch. In addition, the circuit construction ensurs the simplicity in design along with signicant cost saving, since its components are readily available and smaller in size compared to the off-shelf components. This type of converter can adjust the DC voltage to maintain its output voltage to be constant. Typically, SEPIC operated in equipment that uses battery and also in wide range input voltage DC power supply. The converter is designed for renewable energy application where it is able to regulate the output voltage of the Photovoltaic (PV). The converter has been analysed based on different switching frequencies and duty cycle. Thus the outcome of the proposed converter can be achieved by using D=0.45 and fs=30 kHz. The proposed converter is supplied by 26V as an input voltage and produces 300V output and gives 94% of efficiency.

Design and Implementation of a Novel High-Step-Up DC-DC Converter

2013 ◽  
Vol 284-287 ◽  
pp. 2498-2501 ◽  
Author(s):  
Chun An Cheng ◽  
Hung Liang Cheng ◽  
Chien Hsuan Chang ◽  
En Chih Chang ◽  
Fu Li Yang
Keyword(s):  
Power Conversion ◽  
Input Voltage ◽  
Power Converter ◽  
Voltage Level ◽  
Dc Voltage ◽  
Flyback Converter ◽  
Dc Power ◽  
Integrated Boost ◽  
High Output Voltage ◽  
High Output

This paper proposes a novel high-step-up DC-DC power converter for high output-voltage applications from a low level of input voltage. The presented power converter is composed of a integrated boost-flyback converter with two output windings plus cascaded voltage doublers to boost up the 12 V input voltage to a high DC voltage level of 400 V. Description of the presented DC-DC power conversion circuit, and experimental results of a prototype converter for providing 40W output power with a 12V input DC voltage are demonstrated.

scholarly journals Performance evaluation of SEPIC, Luo and ZETA converter

2019 ◽  
Vol 10 (1) ◽  
pp. 374 ◽  
Author(s):  
Niranjana Siddharthan ◽  
Baskaran Balasubramanian
Keyword(s):  
Performance Evaluation ◽  
Direct Current ◽  
Output Voltage ◽  
Input Voltage ◽  
Power Supplies ◽  
Voltage Level ◽  
Switching Losses ◽  
Switched Mode Power Supplies ◽  
Constant Output ◽  
Voltage Switching

<p><span>DC-DC converters are devices which convert direct current (DC) from one voltage level to another by changing the duty cycle of the main switches in the circuits. These converters are widely used in switched mode power supplies and it is important to supply a constant output voltage, regardless of disturbances on the input voltage. In this work, the performance of three different converters such as Single-Ended Primary-Inductance Converter (SEPIC), Luo converter and ZETA converter have been analyzed. Further, the parameters values such as ripple voltage, switching losses and efficiency of the proposed three different converters were compared with each other. Also, the simulation work has been carried out using MATLAB/SIMULINK software. From the comparison of obtained results, it is observed that the ZETA converter has high significance than the SEPIC and Luo converter.</span></p>

Improvement Strategy of Load Regulation of Boosting Power Supply Based on PID Algorithm

2015 ◽  
Vol 740 ◽  
pp. 261-264
Author(s):  
Sheng Zhang ◽  
Pei Zheng Li ◽  
Zhi Wei Chen
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Voltage Divider ◽  
Input Voltage ◽  
The Other ◽  
Improvement Strategy ◽  
Pid Algorithm ◽  
Dc Power ◽  
Load Regulation ◽  
Dc Power Supply

As one of the most important parameters of Direct Current (DC) power supply, Load regulation determines the performance of whole system. In this paper, the internal structure as well as performance parameters of LM2577 boosting converter were deeply investigated and based on this investigation we proposed two new methods of improving its Load Regulation. One method (method 1) is to replace the resistor connected to the feedback pin of LM2577 with a programmable potentiometer and sample the variation of output voltage using an AD converter. The potentiometer is adjusted under the control of feedback algorithm to keep the output voltage stable, thus the load regulation enhanced. In the other method (method 2), the feedback pin of LM2577 is connected to an adder to stabilize the output voltage of DC power supply and increase the load regulation. A voltage divider made up of resistors divides the output voltage and provide the divided voltage to one input of the adder. The other adder input comes from DA converter controlled by microcontroller. To reduce the adjust time and increase the efficiency, PID algorithm is applied in the software part of the system. We use 12-bit AD (ADS1115), 12-bit DA (TLV 5638) and 10-bit programmable potentiometer (AD5293) to test the methods above under the condition of 5V input voltage and 600mA load current. When output is set to 7V, the load regulation is improved from 1.043%, the rate from application circuit in LM2577’s Datasheet, to 0.700% and 0.042% by applying the first and second method, respectively. When output voltage equals 12V, the improvement is from 0.658% to 0.008% and 0.008%. Meanwhile, the method 2 suppresses output voltage ripple to be less than 10mV.

scholarly journals Performance Measure of LCC Resonant Converter for High Voltage Power Supply

2019 ◽  
Vol 8 (3) ◽  
pp. 8871-8874
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Closed Loop ◽  
Input Voltage ◽  
Performance Measure ◽  
Open Loop ◽  
Power Supplies ◽  
Resonant Converter ◽  
High Voltage Power Supply ◽  
Load Conditions

This Work presents the Design and Analysis of LCC Resonant Converter for Power Supplies which are used for high Voltages. LCC Resonant Converter was designed and simulated in both Open loop and closed loop in Matlab Simulink. The Closed loop was found to have a lesser steady state error as compared with that of the open loop. The Stress across the Switches was measured for different input voltages and found that it is linearly proportional to the input voltage. Also the Output Voltage was plotted against different load conditions.

scholarly journals The investigation on the AC to DC voltage multiplier

2021 ◽  
Vol 2 (4) ◽  
Author(s):  
Taige Chen
Keyword(s):  
Output Voltage ◽  
Input Voltage ◽  
Voltage Source ◽  
Input Frequency ◽  
Dc Voltage ◽  
Voltage Multiplier ◽  
Voltage Doubler

This paper investigates the topic of voltage multiplication, which converts a low AC voltage source to a high DC voltage source. Several designs are evaluated, such as the voltage doubler, the voltage tripler, and the voltage quadrupler. It is discovered that the input frequency and the capacitance do not affect the output voltage. This design can be extended to any integer multiples of the input voltage.

scholarly journals A Stable DC Power Supply for Photovoltaic Systems

2015 ◽  
Vol 12 (1) ◽  
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Electrical Power ◽  
Input Voltage ◽  
Photovoltaic Systems ◽  
Pv System ◽  
Pv Systems ◽  
Dc Power ◽  
Voltage Output ◽  
Dc Power Supply

The use of solar energy as source of power is becoming not a choice but a necessity due to the unprecedented growth in the demand and consumption of electrical power for various applications. The solar power from the Photovoltaic (PV) systems is currently used as a standalone PV system or integrated with the electric grid. However, the generated DC power from PV systems is not stable due to weather, atmospheric and environmental conditions, which requires the design of a DC power supply to produce a stable and regulated DC voltage output. In this paper, a new design of power supply is presented that provides a stable output voltage (Vout = +12 V, 0 V, -12V) over significant range of input voltage variations (Vin = +15 V to +50 V) emulating the variation of output voltage of PV systems. The stabilization of the output voltage reflects the effectiveness of the proposed design for photovoltaic systems applications. The system is simulated using NI-MULTISIM software. A satisfactory simulation result is obtained showing a strong promise to practically implement using discrete components.

EQUAL USAGE OF EACH POWER SUPPLY IN A SCALABLE PARALLEL CONFIGURATION

2017 ◽  
Vol 79 (2) ◽  
Author(s):  
Mark Ryan S. To ◽  
Elmer R. Magsino
Keyword(s):  
Fuzzy Logic ◽  
Power Supply ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Input Voltage ◽  
Active Power ◽  
Power Supplies ◽  
Load Current ◽  
Current Sharing ◽  
Parallel Configuration

In this paper, a fuzzy logic controller determines the turning ON or OFF of a power supply in a scalable n-parallel power supply configuration. Each power supply is modeled using differential equations and only differs in the values of its parasitic resistances. This is done in a MATLAB/Simulink environment. A fuzzy logic controller accepts the power supply usage and the power supply’s input voltage perturbation as its inputs while the probability of the corresponding power supply turning ON is its output. The power supplies are connected in parallel configuration and tested under various conditions of static and dynamic current sharing load, voltage input perturbations and on the total number of active power supplies in a given parallel configuration. The number of power supplies n in the parallel configuration is changed by adding or removing a power supply. This addition or removal is termed as scalability. As a result, the fuzzy logic controller was able to guarantee that all power supplies in the scalable n-parallel configuration have equal usage while sharing the load current equally under a regulated output voltage.

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