A CMOS active voltage doubler for a low voltage $100-1000\ \mu \mathrm{W}$ range magnetoelectric energy transducer

2021 ◽  
Author(s):  
Josep Maria Sanchez-Chiva ◽  
Dimitri Galayko ◽  
Amine Rhouni
Keyword(s):  
Low Voltage ◽  
Voltage Doubler ◽  
Energy Transducer

scholarly journals Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1112
Author(s):  
Yu-En Wu ◽  
Jyun-Wei Wang
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
High Efficiency ◽  
Low Voltage ◽  
Leakage Inductance ◽  
Power Switch ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Voltage Stress ◽  
Voltage Doubler

This study developed a novel, high-efficiency, high step-up DC–DC converter for photovoltaic (PV) systems. The converter can step-up the low output voltage of PV modules to the voltage level of the inverter and is used to feed into the grid. The converter can achieve a high step-up voltage through its architecture consisting of a three-winding coupled inductor common iron core on the low-voltage side and a half-wave voltage doubler circuit on the high-voltage side. The leakage inductance energy generated by the coupling inductor during the conversion process can be recovered by the capacitor on the low-voltage side to reduce the voltage surge on the power switch, which gives the power switch of the circuit a soft-switching effect. In addition, the half-wave voltage doubler circuit on the high-voltage side can recover the leakage inductance energy of the tertiary side and increase the output voltage. The advantages of the circuit are low loss, high efficiency, high conversion ratio, and low component voltage stress. Finally, a 500-W high step-up converter was experimentally tested to verify the feasibility and practicability of the proposed architecture. The results revealed that the highest efficiency of the circuit is 98%.

An Ultra Low Voltage Resonant Converter for Thermoelectric Energy Harvesting

2013 ◽  
Vol 772 ◽  
pp. 731-734
Author(s):  
Shi Zhong Guo ◽  
Kai Xie ◽  
Ying Hao Ye ◽  
Xiao Ping Li
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
Power Converter ◽  
Resonant Converter ◽  
Transfer Energy ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Transducer ◽  
Energy Harvesting System ◽  
Energy Buffer

This paper presents a ultra low voltage resonant converter for thermoelectric energy harvesting.A key challenge in designing energy harvesting system is that thermoelectric generators output a very low voltage (-0.3V~0.3V). Therefore, a power converter is used to boost the output voltage of the energy transducer and transfer energy into an energy buffer for storage. The converter operates from input voltages ranging from-500mV to-60mV and 60mV to 500mV while supplying a 4.2 V DC output. The converter consumes 88μW of quiescent power, delivers up to 1.6 (1.8) mW of output power, and is 65(67)% efficient for a-100mV and 100mV input, respectively.

scholarly journals Coupled Inductor and Voltage Doubler Circuit for High Step-Up DC-DC Converter

2021 ◽  
Author(s):  
Abhinav Vinod Deshpande
Keyword(s):  
Steady State ◽  
Low Voltage ◽  
Research Paper ◽  
Duty Ratio ◽  
Voltage Gain ◽  
Steady State Analysis ◽  
Voltage Stress ◽  
Power Switches ◽  
Voltage Doubler ◽  
State Analysis

In this research paper, a novel high step up dc-dc converter with a coupled inductor and voltage doubler circuits is proposed. The converter achieves a high step up voltage gain with an appropriate duty ratio and low voltage stress on the power switches. Also, the energy which is stored in the leakage inductor of the coupled inductor can be recycled to the output. The operating principles and the steady state analysis of the proposed converter are discussed in detail. Finally, a prototype circuit of the proposed converter is implemented in the laboratory in order to verify the performance of the proposed converter.

scholarly journals High Step-up Voltage Gain Converter with Ripple-free Input Current for Renewable Energy Sources

2017 ◽  
Author(s):  
Zhangyong Chen ◽  
Yong Chen
Keyword(s):  
Renewable Energy ◽  
Electromagnetic Interference ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Operation Mode ◽  
Energy System ◽  
Input Current ◽  
Voltage Gain ◽  
Voltage Doubler ◽  
Current Ripple

Abstract: High step-up voltage gain nonisolated DC-DC converter have attracted much attention in photovoltaic, fuel cells and other renewable energy system applications. In this paper, by combining input current ripple-free boost cell with coupled-inductor voltage-doubler cell, an input current ripple-free high voltage gain nonisolated converter is proposed. In addition, passive lossless clamp circuit is adopted to recycle the leakage inductor energy and to reduce the voltage spike across the power switch. By utilizing voltage-doubler cell consisting of diode and capacitor, the voltage stress of switch is further reduced and the resonance between the leakage inductor and the stray capacitor of the output diode is eliminated. A low switch-on-resistance low-voltage-rated MOSFET can therefore be employed to reduce the conduction loss and cost. The reverse recovery loss of output diode is reduced, and the efficiency of converter can be improved. Furthermore, the proposed converter can achieve nearly zero input current-ripple and make the design of electromagnetic interference (EMI) filter easy. Steady state analysis and operation mode of the converter is performed. Finally, experimental results are presented to verify the analysis results of the proposed converter.

scholarly journals Resonant Converter with Voltage-Doubler Rectifier or Full-Bridge Rectifier for Wide-Output Voltage and High-Power Applications

Electronics ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 3 ◽  
Author(s):  
Bor-Ren Lin ◽  
Guan-Hong Lin ◽  
Aries Jian
Keyword(s):  
Output Voltage ◽  
Low Voltage ◽  
Resonant Circuit ◽  
Resonant Converter ◽  
Power Devices ◽  
Voltage Output ◽  
Power Switches ◽  
Bridge Rectifier ◽  
Voltage Doubler ◽  
Secondary Side

This paper presents a resonant converter with the benefits of wide output voltage, wide soft switching characteristics for power devices and high circuit efficiency. Since the series resonant circuit is adopted on the primary side, the power switches are turned on under zero voltage switching and power diodes on the secondary side can be turned off under zero current switching. To overcome the drawback of narrow voltage operation range in the conventional resonant converter, full-bridge rectifier and voltage-doubler rectifier topologies are employed on the secondary side for low-voltage output and high-voltage output applications. Therefore, the voltage rating of power devices on the secondary side is clamped at output voltage, rather than two times output voltage, in the center-tapped rectifier circuit. Synchronous power switches are used on the secondary side to further reduce the conduction losses so that the circuit efficiency can be further improved. To verify the theoretical analysis and circuit performance, a laboratory prototype with 1 kW rated power was built and tested.

Performance Analysis of Photovoltaic Induction Motor Drive for Agriculture Purpose

2016 ◽  
Vol 7 (4) ◽  
pp. 1252
Author(s):  
Neethu Raj P R ◽  
Vasanthi V
Keyword(s):  
Induction Motor ◽  
Low Voltage ◽  
Solar Pv ◽  
Pumping System ◽  
Dc Motors ◽  
High Voltage Gain ◽  
Hysteresis Controller ◽  
Voltage Doubler ◽  
Irradiation Level ◽  
Storage Batteries

<p>This paper presents water pumping system using renewable source (solar) without the use of chemical storage batteries. In this converter-inverter circuit is used to drive Induction motor. The Converter used here is Two Inductor boost converter (TIBC), which consists of a resonant tank, voltage doubler rectifier and a snubber circuit. TIBC is designed to drive the three phase induction motor from PV energy. TIBC converter is also known as current fed multi resonant converter having high voltage gain and low input current ripple. Converter switches are controlled through hysteresis controller and ZCS resonant topologies. Solar PV power fluctuates according to irradiation level of sunlight and hence tracking of maximum power at all time is mandatory. SPWM control with third harmonic injection is used to trigger the IGBT’s in the inverter. The development is oriented to achieve a more efficient, reliable, maintenance free and cheaper solution than the standard ones, that uses DC motors or low voltage synchronous motors. The proposed method is verified with MATLAB/SIMULINK and the system simulation confirms the performance of the proposed system.</p>

Analysis and Design of Isolated SEPIC Converter with Greinacher Voltage Multiplier Cell

2020 ◽  
Author(s):  
Bernardo Andres ◽  
Leonardo Romitti ◽  
Fabrício Hoff Dupont ◽  
Leandro Roggia ◽  
Luciano Schuch
Keyword(s):  
High Efficiency ◽  
Low Voltage ◽  
Voltage Gain ◽  
Steady State Analysis ◽  
Analysis And Design ◽  
Photovoltaic Modules ◽  
High Voltage Gain ◽  
Photovoltaic Applications ◽  
Voltage Doubler ◽  
Simulation Results

High step-up converters are required and used in photovoltaic applications, due to low voltage of photovoltaic modules. In this paper, an isolated dc-dc high step-up SEPIC with a Greinacher voltage doubler cell is presented. It has the advantage of continuous input current, high efficiency, high voltage gain, isolation and demands a single switch, being suitable for low power grid-tie photovoltaic systems. The operating principles and steady-state analysis are presented, including the detailed analysis of resonant stage, where the value of primary side capacitor is taken into account and plays an important role in the design of the converter, since it directly affects the resonance frequency and RMS current values. Simulation results are presented to validate the analysis and design.

scholarly journals Charge Pump Circuits for Low-voltage Applications

VLSI Design ◽  
2002 ◽  
Vol 15 (1) ◽  
pp. 477-483 ◽  
Author(s):  
Y. Moisiadis ◽  
I. Bouras ◽  
A. Arapoyanni
Keyword(s):  
Output Voltage ◽  
High Performance ◽  
Low Voltage ◽  
Charge Pump ◽  
Body Effect ◽  
Stage Number ◽  
Voltage Doubler ◽  
Charge Pump Circuit ◽  
Voltage Conversion ◽  
Nmos Transistors

In this paper, a low-voltage, high performance charge pump circuit, suitable for implementation in standard CMOS technologies is proposed. Its pumping operation is based on cascading several cross-connected NMOS voltage doubler stages. For very low-voltage applications (1.2 V, 0.9 V), where the performance of the NMOS transistors is limited due to body effect, two improved versions of the charge pump with cascaded voltage doublers (charge pump with CVD) are also proposed. The first utilises PMOS transistors (charge pump with CVD-PMOS) in parallel to the cross-connected NMOS transistors, while the second improves the pumping gain by boosting the clock amplitude (charge pump with CVD-BCLK). Simulations at 50 MHz have shown that a five-stages charge pump with CVD can achieve a 1.5–8.4 V voltage conversion. For the same stage number and frequency, an output voltage of 4 and 7.3 V can be generated from 0.9 V, by using the charge pump with CVD-PMOS and the charge pump with CVD-BCLK, respectively.

scholarly journals Bidirectional Resonant DC-DC Converter for Microgrid applications

2020 ◽  
Vol 8 (5) ◽  
pp. 5338-5345
Keyword(s):  
Low Voltage ◽  
Resonant Circuit ◽  
Voltage Gain ◽  
Dc Microgrid ◽  
Turn On ◽  
Zero Current ◽  
Capacitive Divider ◽  
Voltage Doubler ◽  
Output Side ◽  
Zero Voltage

This paper presents a non-isolated bidirectional softswitching dc-dc converter for DC microgrid energy storage synchronization. To assist the soft switching of switches and diodes, the LCL resonant circuit is applied and an input end halfbridge boost converter is enforced. Using the voltage doubler circuit introduced on the output side, a voltage gain of 2X is achieved. Through the non-isolated circuit, the total voltage gain is obtained. The capacitive divider halves the voltage on the greater hand. The circuit performs a high frequency ripple of low output voltage. Diodes guarantee zero voltage Turn ON for switches and zero current turn ON and turn OFF during buck / boost operation Although no internal snubber circuits are available, the circuit ensures low voltage stress across semiconductor systems.

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