Compensation Capacitors Sizing for Achieving Arbitrary Load-Independent Voltage Gain in Series-Series Compensated Inductive WPT Link operating at Fixed Frequency

2020 ◽  
pp. 1-1 ◽  
Author(s):  
Alon Kuperman
Keyword(s):  
Voltage Gain ◽  
Fixed Frequency ◽  
Arbitrary Load ◽  
In Series

scholarly journals Influence of Geometrical Parameters on the DC Analog Behavior of the Asymmetric Self-Cascode FD SOI nMOSFETs

2018 ◽  
Vol 13 (2) ◽  
pp. 1-7
Author(s):  
Rafael Assalti ◽  
Denis Flandre ◽  
Michelly De Souza
Keyword(s):  
Three Dimensional ◽  
Geometrical Parameters ◽  
Voltage Gain ◽  
Fully Depleted ◽  
Analog Performance ◽  
In Series ◽  
Self Cascode ◽  
Channel Lengths ◽  
Analog Behavior ◽  
Output Conductance

This paper assesses the DC analog performance of a composite transistor named Asymmetric Self-Cascode structure, which is formed by two Fully Depleted SOI nMOSFETs connected in series with shortened gates. The influence of geometrical parameters, such as different channel widths and lengths on the transistors at source and drain sides is evaluated through three-dimensional numerical simulations, which have been firstly adjusted to the experimental measurements. The transconductance, output conductance, Early voltage and intrinsic voltage gain have been used as figure of merit to explore the advantages of the composite transistor. From the obtained results, the largest intrinsic voltage gain has been obtained by using longer channel lengths for both transistors, with narrower device close to the source and wider transistor near to the drain.

scholarly journals A new generalized cross-connected switched capacitor multilevel inverter topology with high output voltage gain for single phase solar PV unit

2021 ◽  
Vol 9 (4A) ◽  
Author(s):  
Prem P ◽  
◽  
Suresh V ◽  
Jagabar Sathik M ◽  
Shady H.E.Abdel Aleem ◽  
...  
Keyword(s):  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Voltage Gain ◽  
Solar Pv ◽  
Voltage Balancing ◽  
In Series ◽  
Terminal Voltage ◽  
Inherent Voltage ◽  
High Output Voltage ◽  
Dynamic Loading Conditions

Switched capacitor multilevel inverters are gaining much attention these days due to their merits like voltage boosting and voltage balancing characteristics. A Cross Connected Switched Capacitor Multilevel Inverter (C2SC-MLI) topology is proposed in this work. It can synthesize thirteen levels in the terminal voltage waveform and with a voltage boost ratio of 1:3. The topology is extendable by adding additional “n” modules in series. The number of levels (NLevel) and the voltage gain can be increased up to 4i+9 and 1:(i+2) respectively by connecting ‘i’ such ‘n’ modules. The topology also has inherent voltage balancing ability. To prove the advantage of proposed topology it is compared with recent switched capacitor multilevel inverter topologies and conventional multilevel inverter topologies in terms of number of power electronic components required, cost and voltage gain. The performance of proposed topology is validated using simulation in MATLAB and with an experimental prototype rated 0.1 kW fed by a solar PV emulator under steady state and dynamic loading conditions.

scholarly journals A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2139 ◽  
Author(s):  
Shahin Honarmand ◽  
Amirhossein Rajaei ◽  
Mahdi Shahparasti ◽  
Alvaro Luna ◽  
Edris Pouresmaeil
Keyword(s):  
Theoretical Analysis ◽  
Output Voltage ◽  
Power Structure ◽  
Input Voltage ◽  
Power Converter ◽  
Voltage Gain ◽  
Experimental Prototype ◽  
Transformation Ratio ◽  
In Series ◽  
Full Power

Employing partial power processing (PPP) technique for quasi Z-source converter (QZSC) a new structure of the converter is presented. Using PPP technique although eliminates electrical insolation, but permits reducing voltage and current stress at the semiconductors, if compared with full power proposals. In this work, two PPP structures are discussed: A first one, similar to the basic topology, where the output voltage of the power converter is in series with the input voltage; and a second one, where the output is in series with the capacitor of the QZSC. This minor modification, which requires no extra elements, improves the power rating, voltage gain, and requires a lower transformation ratio. An experimental prototype of the proposed converter has been tested and the results are compared with other implementations, permitting to validate the theoretical analysis as well as the advantages that this proposal provides.

High Step-Up Converter Series Based on the Diode-Capacitor Network

2015 ◽  
Vol 719-720 ◽  
pp. 603-610
Author(s):  
Qi Chen ◽  
Yu Qi Wu ◽  
Jia Lin Ma
Keyword(s):  
Theoretical Analysis ◽  
Conversion Efficiency ◽  
Simulation Analysis ◽  
Experimental Results ◽  
High Conversion ◽  
Voltage Gain ◽  
High Conversion Efficiency ◽  
Voltage Stress ◽  
In Series ◽  
Switch Voltage

This essay is about the application of a diode-capacitor network on conventional non-isolated DC–DC converter. The study will focus on obtaining high step-up voltage gain, low switch voltage stress, simple control, and high conversion efficiency. Three single-switch step-up converters with high step-up ratio based on the diode-capacitor network are proposed. The principle of operation and theoretical analysis of every single-switch step-up converter is evaluated for both continuous and discontinuous conduction modes. Given the mirror-symmetrical characteristic of the diode-capacitor network, cascade single-switch step-up converters based on the single-switch positive-output step-up converter are achieved when several diode-capacitor networks are arranged in series. Simulation analysis and experimental results obtained from the implemented prototypes operating at 40 kHz are provided to verify the performances of the proposed step-up converters.

scholarly journals Independent Double-Boost Interleaved Converter with Three-Level Output

2021 ◽  
Vol 11 (13) ◽  
pp. 5993
Author(s):  
Vasile Mihai Suciu ◽  
Sorin Ionut Salcu ◽  
Alexandru Madalin Pacuraru ◽  
Lucian Nicolae Pintilie ◽  
Norbert Csaba Szekely ◽  
...  
Keyword(s):  
Mathematical Analysis ◽  
Level Structure ◽  
Significant Feature ◽  
Voltage Gain ◽  
Boost Converters ◽  
Voltage Balancing ◽  
Integrated Boost ◽  
In Series ◽  
Converter Topology ◽  
Laboratory Prototype

This paper introduces a novel converter topology based on an independent controlled double-boost configuration. The structure was achieved by combining two independent classic boost converters connected in parallel at the input and in series at the output. Through proper control of the two boost converters, an interleaved topology was obtained, which presents a low ripple for the input current. Being connected in series at the output, a three-level structure was attained with twice the voltage gain of classic boost and interleaved topologies. A significant feature of the proposed converter is the possibility of independent operation of the two integrated boost converters, in both symmetrical and asymmetrical modes. This feature may be particularly useful in voltage balancing or interconnection with bipolar DC grids/applications. The operation principle, simulations, mathematical analysis, and laboratory prototype experimental results are presented.

A PWM Strategies for Diode Assisted NPC-MLI to Obtain Maximum Voltage Gain for EV Application

2017 ◽  
Vol 8 (2) ◽  
pp. 767 ◽  
Author(s):  
C. Bharatiraja ◽  
Shri Harish ◽  
J L Munda ◽  
P. Sanjeevikumar ◽  
M. Sriram Kumar ◽  
...  
Keyword(s):  
Pulse Width Modulation ◽  
Photovoltaic System ◽  
Duty Ratio ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Wide Range ◽  
Selection Approach ◽  
Power Switches ◽  
In Series ◽  
Maximum Voltage

The projected diode assisted Neutral Point Diode Clamed (NPC-MLI) with the photovoltaic system produces a maximum voltage gain that is comparatively higher than those of other boost conversion techniques. This paper mainly explores vector selection approach pulse-width modulation (PWM) strategies for diode-assisted NPC-MLI to obtain a maximum voltage gain without compromising in waveform quality. To obtain a high voltage gain maximum utilization of dc-link voltage and stress on the power switches must be reduced. From the above issues in the diode assisted NPC-MLI leads to vector selection approach PWM technique to perform capacitive charging in parallel and discharging in series to obtain maximum voltage gain. The operation principle and the relationship of voltage gain versus voltage boost duty ratio and switching device voltage stress versus voltage gain are theoretically investigated in detail. Owing to better performance, diode-assisted NPC-MLI is more promising and competitive topology for wide range dc/ac power conversion in a renewable energy application. Furthermore, theoretically investigated are validated via simulation and experimental results.

scholarly journals Simulation of Zeta Converter Based 3-level NPC Inverter with PV System

2018 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
D. Selvabharathi ◽  
Palanisamy R ◽  
K. Selvakumar ◽  
V. Kalyanasundaram ◽  
D. Karthikeyan ◽  
...  
Keyword(s):  
Voltage Gain ◽  
Pv System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
High Voltage Gain ◽  
In Series ◽  
Input Source ◽  
Power Point ◽  
Capacitive Charging

<span lang="EN-US">This paper proposes increasing the efficiency of the autonomous Photovoltaic (PV) system by utilizing zeta converter alongside neutral point clamped multilevel inverters (NPC-MLI) based on innovative PWM scheme. The PV system acts as an input source and the relevant control of zeta converter through maximum power point tracking (MPPT) offers the maximum available power from the PV array connected to DC-link. To obtain a high voltage gain we need to exhaust the dc-link voltage as much as possible and reduce stress on the switches. For this the NPC-MLI algorithm approaches PWM technique to perform capacitive charging in parallel and discharging in series to obtain maximum voltage gain. The proposed scheme is designed and verified via detailed simulations in the MATLAB/Simulink environment. </span>

scholarly journals Removal of Initial Phase Transient Current in DC-DC Boost Converter using Modified Switched Inductor

2019 ◽  
Vol 8 (10) ◽  
pp. 3360-3364
Keyword(s):  
Initial Phase ◽  
High Gain ◽  
Boost Converter ◽  
Open Circuit ◽  
Transient Current ◽  
Voltage Gain ◽  
Matlab Simulink ◽  
High Voltage Gain ◽  
In Series ◽  
Converter Topology

This paper presents the removal of initial phase transient currents in an existing dc-dc boost converter topology with the help of a modified switched inductor cell. In an earlier proposed topology, a novel single switch boost converter was proposed with high voltage gain, which however gave a high initial transient current of the order of 26kA on simulating in MATLAB Simulink environment. This initial phase current was removed by placing a small valued inductor and a freewheeling diode in series with boost capacitor. The inductor is placed in parallel with the diode and creates an open circuit initially, this arrangement limits the current to a bearable value, i.e. approximately 180A, without compromising with the high gain of the cell. The results of the proposed modifications are validated using MATLAB Simulink.

scholarly journals A Bipolar Voltage Gain Boost AC-AC Converter Based on Four Switching Transistors

2021 ◽  
Vol 11 (21) ◽  
pp. 10254
Author(s):  
Naveed Ashraf ◽  
Ghulam Abbas ◽  
Nasim Ullah ◽  
Sattam Al Otaibi ◽  
Ahmed Althobaiti ◽  
...  
Keyword(s):  
High Voltage ◽  
Voltage Regulation ◽  
Input Power ◽  
Voltage Gain ◽  
Depth Level ◽  
Bipolar Voltage ◽  
High Voltage Gain ◽  
Voltage Compensator ◽  
Mandatory Requirement ◽  
In Series

In numerous applications, such as the correction of grid voltage during voltage sag or swell events caused by system faults, it is necessary to ensure the stabilization of the output voltage with in-phase and out-phase features. This feature can also be employed in high-voltage-gain AC to DC conversion. AC voltage control schemes with one-stage conversion are viable approaches in this regard as only voltage regulation is needed. This conversion approach has strong potential for such applications as it is simple to realize. The voltage-correcting compensators are connected in series with the lines. The inputs of the AC voltage controllers employed in the voltage-correcting compensators may be connected to the faulty phase or other healthy phases. The number of AC voltage controllers used in a voltage compensator are one and two if its input power is drawn from the faulty and non-faulty phases, respectively. In the latter case, voltage gains and phase adjustment are major problems. There is no such issue in the first approach, where the voltage-correcting controller is connected to the line where the voltage variation is to be corrected. A high voltage gain more than the unity of both voltage polarities is required if the depth level of the correcting voltage is around 50% or more. The size and cost of a voltage-correcting controller depend on the number of switching transistors, as an isolated DC source with a gate-controlling circuit is a mandatory requirement for the switching operation of each transistor. Therefore, in the suggested research, an AC voltage controller having bipolar voltage gain is realized only with four switching transistors and six diodes, which reduces the overall size and cost significantly. The verification of the suggested topology is ensured by obtaining the simulation and real results from Simulink-based and practical-based platforms, respectively.

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