Designing a continuous current buck-boost converter using the core geometry

2006 ◽  
Author(s):  
C.W.T. McLyman
Keyword(s):  
Boost Converter ◽  
The Core ◽  
Continuous Current

scholarly journals Low Power Photo-Voltaic Harvesting Matrix Based Boost DC–DC Converter with Recycled and Synchro-Recycled Scheme

2020 ◽  
Vol 10 (4) ◽  
pp. 39
Author(s):  
Maziar Rastmanesh ◽  
Ezz El-Masry ◽  
Kamal El-Sankary
Keyword(s):  
Low Power ◽  
Output Voltage ◽  
Current Mode ◽  
Boost Converter ◽  
Boost Converters ◽  
Continuous Current ◽  
Photo Voltaic ◽  
Continuous Current Mode ◽  
Conversion Efficiencies ◽  
Voltage Conversion

Photo-voltaic (PV) power harvest can have decent efficiency when dealing with high power. When operating with a DC–DC boost converter during the low-power harvest, its efficiency and output voltage are degraded due to excessive losses in the converter components. The objective of this paper is to present a systematic approach to designing an efficient low-power photo-voltaic harvesting topology with an improved efficiency and output voltage. The proposed topology uses a boost converter with and extra inductor in recycled and synchro-recycled techniques in continuous current mode (CCM). By exploiting the non-linearity of the PV cell, it reduces the power loss and using the current stored in the second inductor, it enhances the output voltage and output power simultaneously. Further, by utilizing the Metal Oxide Silicon Field Effect Transistor’s (MOSFET) body diode as a switch, it maintains a minimum hardware, and introduces a negligible impact on the reliability. The test results of the proposed boost converters show that it achieves a decent power and output voltage. Theoretical and experimental results of the proposed topologies with a tested prototype are presented along with a strategy to maximize power and voltage conversion efficiencies and output voltage.

Design Method of a Boost DC-DC Converter Circuit

2014 ◽  
Vol 1039 ◽  
pp. 334-337
Author(s):  
Li Ran ◽  
Tian Cai Li ◽  
Gui Qin Li ◽  
Hong Bo Li ◽  
Xiao Yuan
Keyword(s):  
Control Method ◽  
Design Method ◽  
Power Conversion ◽  
Boost Converter ◽  
Industrial Equipment ◽  
Pwm Control ◽  
Direct Power ◽  
The Core

DC-DC converter is a kind of power conversion equipment. Electricity is the direct power for most mechanical industrial equipment currently. However, because of the diversity of mechanical industrial equipment, electricity should be transformed through power conversion equipment. This paper presents a DC-DC boost converter with PWM control method. The hardware and the structure of the core circuit is designed and the boost principle is interpreted. The detail of the configuration circuit around is described as well.

scholarly journals A Novel Minimum-Phase Dual-Inductor Hybrid Boost Converter with PWM Voltage-Mode Controller

2021 ◽  
Author(s):  
Van Ha Nguyen
Keyword(s):  
Power Efficiency ◽  
Pulse Width Modulation ◽  
Boost Converter ◽  
Fast Transient Response ◽  
Voltage Mode ◽  
Conduction Loss ◽  
Current Path ◽  
Continuous Current ◽  
The Right ◽  
Distinct Features

This paper presents a new dual-inductor hybrid boost converter (DI-HBOC) with two inductors located at the output. This structure allows continuous current delivered to the load, thus, reducing the output filtering capacitor size and the output voltage ripple. By relocating the inductor at the output, which is the lower current path, the conduction loss on the inductor can be significantly reduced. The right half plane zero (RHPZ) in the control-to-output transfer function can also be eliminated; therefore, a simple pulse-width modulation (PWM) voltage-mode controller can be used for the proposed DI-HBOC while still achieving high closed-loop bandwidth and fast transient response. The distinct features of the proposed converter are analytically demonstrated. A 12-to 24 V DI-HBOC and a conventional BOC (CBOC) using low-<i>R</i><sub>ON</sub> GaN switches with PWM voltage-mode controller are also implemented in PSIM for verification and comparison. The simulated peak power efficiency is 97.4 % that is 1.17 % higher than the CBOC. At 3 A load current, the power efficiency is improved by 9.7 % and the output ripple is only 17.5 mV, 6x lower than in CBOC.

scholarly journals LC Impedance Source Bi-Directional Converter with Reduced Capacitor Voltages

Electronics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1062
Author(s):  
Dogga Raveendhra ◽  
Rached Dhaouadi ◽  
Habibur Rehman ◽  
Shayok Mukhopadhyay
Keyword(s):  
Boost Converter ◽  
Lower Number ◽  
Modulation Scheme ◽  
Matlab Simulink ◽  
Number Of Components ◽  
Test Conditions ◽  
Bidirectional Converter ◽  
Voltage Stress ◽  
Capacitor Voltage ◽  
Continuous Current

This paper proposes an LC (Inductor and Capacitor) impedance source bi-directional DC–DC converter by redesigning after rearranging the reduced number of components of a switched boost bi-directional DC–DC converter. This new converter with a conventional modulation scheme offers several unique features, such as a) a lower number of components and b) reduced voltage stress on the capacitor compared to existing topologies. The reduction of capacitor voltage stress has the potential of improving the reliability and enhancing converter lifespan. An analysis of the proposed converter was completed with the help of a mathematical model and state-space averaging models. The converter performance under different test conditions is compared with the conventional bi-directional DC–DC converter, Z-source converter, discontinuous current quasi Z-source converter, continuous current quasi Z-source converter, improved Z-source converter, switched boost converter, current-fed switched boost converter, and quasi switched boost converter in the Matlab Simulink environment. MATLAB/Simulink results demonstrate that the proposed converter has lesser components count and reduced capacitors’ voltage stresses when compared to the topologies mentioned above. A 24 V to 18 V LC-impedance source bi-directional converter and a conventional bidirectional converter are built to investigate the feasibility and benefits of the proposed topology. Experimental results reveal that capacitor voltage stresses, in the case of proposed topology are reduced by 75.00% and 35.80% in both boost and buck modes, respectively, compared to the conventional converter circuit.

scholarly journals A Novel Minimum-Phase Dual-Inductor Hybrid Boost Converter with PWM Voltage-Mode Controller

2021 ◽  
Author(s):  
Van Ha Nguyen
Keyword(s):  
Power Efficiency ◽  
Pulse Width Modulation ◽  
Boost Converter ◽  
Fast Transient Response ◽  
Voltage Mode ◽  
Conduction Loss ◽  
Current Path ◽  
Continuous Current ◽  
The Right ◽  
Distinct Features

This paper presents a new dual-inductor hybrid boost converter (DI-HBOC) with two inductors located at the output. This structure allows continuous current delivered to the load, thus, reducing the output filtering capacitor size and the output voltage ripple. By relocating the inductor at the output, which is the lower current path, the conduction loss on the inductor can be significantly reduced. The right half plane zero (RHPZ) in the control-to-output transfer function can also be eliminated; therefore, a simple pulse-width modulation (PWM) voltage-mode controller can be used for the proposed DI-HBOC while still achieving high closed-loop bandwidth and fast transient response. The distinct features of the proposed converter are analytically demonstrated. A 12-to 24 V DI-HBOC and a conventional BOC (CBOC) using low-<i>R</i><sub>ON</sub> GaN switches with PWM voltage-mode controller are also implemented in PSIM for verification and comparison. The simulated peak power efficiency is 97.4 % that is 1.17 % higher than the CBOC. At 3 A load current, the power efficiency is improved by 9.7 % and the output ripple is only 17.5 mV, 6x lower than in CBOC.

scholarly journals Non-isolated Modified Quadratic Boost Converter with Midpoint Output for Solar Photovoltaic Applications

2019 ◽  
Vol 87 ◽  
pp. 01025
Author(s):  
Shanmugasundaram Ravivarman ◽  
Karuppiah Natarajan ◽  
Reddy B Raja Gopal
Keyword(s):  
High Gain ◽  
Boost Converter ◽  
Solar Photovoltaic ◽  
Photovoltaic Panels ◽  
Operating Modes ◽  
Voltage Stress ◽  
Photovoltaic Applications ◽  
Current Conduction ◽  
Continuous Current ◽  
Converter Topology

This paper presents a boost DC-DC converter topology with non - isolated high gain and output midpoint, to boost the voltage obtained from solar photovoltaic panels. The three-level boost converter is coupled to the output port of the single-switch quadratic boost converter to derive the proposed converter topology. The voltage gain of the proposed converter is greater than that of the classical boost converter. The voltage stress on the switches of the proposed converter is equal to half of the converter output voltage. Static analysis, operating modes, experimental waveforms in continuous current conduction and discontinuous current conduction modes are shown. A 520 W prototype converter was implemented in the laboratory and its results are presented.

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