Novel single phase full bridge inverter formed by floating capacitors

2016 ◽  
Vol 7 (1) ◽  
pp. 193 ◽  
Author(s):  
Prathap Reddy Bhimireddy ◽  
Sreekanth Reddy Kondreddy ◽  
Samba Siva Reddy Beduduri
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Multilevel Inverter ◽  
High Quality ◽  
Switching Losses ◽  
Common Mode Voltage ◽  
Voltage Variation ◽  
Gate Driver

In this paper, a novel single-phase bridge inverter is presented which can generate a more number of voltage levels with reduced number of switches, gate driver circuits and diodes as compare to normal multilevel inverter. Another feature of this inverter is its ability to prodeuce the voltages from a single dc-link power supply which enables back-to-back operation of converter. The proposed inverter with more number of levels can improve power quality, lower switching losses and produce high quality voltage waveforms. Also, the proposed inverter can be operated at all load power factor.The research of the model is done by means of computer simulation with the software MATLAB/SIMULINK. This configuration has very low dv/dt and common-mode voltage variation. Also this inverter is help full for reactive power compensation.

Simulation and Analysis of Novel Extendable Multilevel Inverter Topology

2019 ◽  
Vol 28 (06) ◽  
pp. 1950089 ◽  
Author(s):  
V. Thiyagarajan ◽  
P. Somasundaram ◽  
K. Ramash Kumar
Keyword(s):  
Single Phase ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Voltage Waveform ◽  
Dc Voltage ◽  
Switching Losses ◽  
Comparison Results ◽  
Symmetrical Condition ◽  
Gate Driver ◽  
Inverter Topology

Multilevel inverter (MLI) has become more popular in high power, high voltage industries owing to its high quality output voltage waveform. This paper proposes a novel single phase extendable type MLI topology. The term ‘extendable’ is included since the presented topology can be extended with maximum number of dc voltage sources to synthesize larger output levels. This topology can be operated in both symmetrical and asymmetrical conditions. The major advantages of the proposed inverter topology include minimum switching components, reduced gate driver circuits, less harmonic distortion and reduced switching losses. The comparative analysis based on the number of switches, dc voltage sources and conduction switches between the proposed topology and other existing topologies is presented in this paper. The comparison results show that the proposed inverter topology requires fewer components. The performance of the proposed MLI topology has been analyzed in both symmetrical and asymmetrical conditions. The simulation model is developed using MATLAB/SIMULINK software to verify the performance of the proposed inverter topology and also the feasibility of the presented topology during the symmetrical condition has been validated experimentally.

scholarly journals Harmonic minimization of a single-phase asymmetrical TCHB multilevel inverter based on nearest level control method

2020 ◽  
Vol 11 (3) ◽  
pp. 1406
Author(s):  
Wail Ali Ali Saleh ◽  
Nurul Ain Mohd Said ◽  
Wahidah Abd Halim
Keyword(s):  
Single Phase ◽  
Control Method ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Level Control ◽  
Electronic Components ◽  
High Quality ◽  
Multilevel Inverters ◽  
Switching Losses ◽  
Field Programmable

Multilevel inverters are gaining special interest among researchers and in the industry due to their widespread applications and numerous merits. Obtaining high quality, more reliable output while using a reduced number of electronic components is the main purpose of most of the research conducted in this area of study. The purpose of this study is to apply the nearest level control (NLC) method to a 13-level transistor-clamped H-bridge (TCHB) inverter with unequal DC voltage supplies. The NLC method operates at the fundamental frequency, thus reducing switching losses, and can reduce the harmonic content significantly. The adopted multilevel inverter consists of two TCHB cells supplied with two asymmetrical DC input sources with a voltage ratio of 1:2. This structure reduces the number of electronic components, and the asymmetry in the DC input voltages results in a higher number of levels. The adopted topology and its proposed control method were simulated in Matlab/Simulink, and the simulation results were verified through experiments using an Altera field-programmable gate array (FPGA) board. The results showed that the topology and its control method are efficient in obtaining a high-quality output with an improved total harmonic distortion (THD).

scholarly journals MODERN METHODS OF REACTIVE POWER COMPENSATION IN PETROCHEMICAL PRODUCTION

2022 ◽  
Vol 1 (15) ◽  
pp. 22-28
Author(s):  
Igor' Golovanov ◽  
Alena Alekseeva ◽  
Vladimir Proskuryakov ◽  
Roman Samchuk
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Supply System ◽  
Petrochemical Production ◽  
Oil Refineries ◽  
Compensation Systems ◽  
Thyristor Control ◽  
Control Circuits

Electrical circuits of reactive power compensation on the basis of thyristor control circuits in the power supply system of oil refineries are considered. The main advantages, advantages over traditional reactive power compensation systems and directions of introduction into the power supply system of modern production are formulated.

scholarly journals DOWNHOLE REACTIVE POWER COMPENSATION

2015 ◽  
pp. 29-33
Author(s):  
V. A. Kopyrin ◽  
V. A. Iordan ◽  
O. V. Smirnov
Keyword(s):  
Centrifugal Pump ◽  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Pump Unit ◽  
Unit Power ◽  
Transformer Substation ◽  
Electrical Centrifugal Pump

The authors provide a method for compensation of the reactive power inside a well. In the environment Matlab/ Simylink a model was developed of the site of the electrical centrifugal pump unit power supply from the transformer substation. A comparison is made of the proposed method of downhole reactive power compensation with the existing method.

scholarly journals Method for improving performance of devices for adjustable reactive power compensation

2019 ◽  
Vol 110 ◽  
pp. 01010
Author(s):  
Vasiliy Cheremisin ◽  
Andrey Nikonov
Keyword(s):  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Point Selection ◽  
Traction Power Supply System ◽  
Current Voltage ◽  
Compensation Device ◽  
Traction Power Supply ◽  
The Relationship ◽  
Traction Power

The article presents a method for selecting the parameters of the current-voltage characteristics of adjustable reactive power compensation devices used at sectioning stations of railway sections electrified by alternating current with a voltage of 27.5 kV. This technique is based on the experience of operating two types of devices in the traction power supply system. Power control of these devices is implemented by the voltage level at the switching point. Selection of the setpoint voltage and slope characteristics was done. The developed method allows increasing the efficiency of devices by eliminating the voltage losses on the active component of traction loads. That will reduce the loss of electricity in the system of traction power supply. Changing the parameters of the characteristics will increase the relationship between the reactive power consumed in the zone and the voltage measured by the devices. Following the results of the formation of the methodology, an example of the choice of characteristics for a real compensation device is presented.

scholarly journals Extension of the reactive power compensation for the pulsed power supply of ASDEX Upgrade

2019 ◽  
Vol 146 ◽  
pp. 714-718
Author(s):  
Claus-Peter Käsemann ◽  
Igor Goldstein ◽  
Christian Jacob ◽  
Michael Rott ◽  
Michael Schandrul
Keyword(s):  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Pulsed Power ◽  
Pulsed Power Supply

scholarly journals Open-Circuit Fault-Tolerant Design of the Cascaded H-Bridge Rectifier Incorporating Reactive Power Compensation

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1490
Author(s):  
Ting Chen ◽  
Hong Cheng ◽  
Cong Wang ◽  
Wenbo Chen ◽  
Zhihao Zhao
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Power Transmission ◽  
Fault Tolerant ◽  
Reactive Power Compensation ◽  
Open Circuit ◽  
Normal Operation ◽  
Bridge Rectifier ◽  
Drive Signals ◽  
Fault Tolerant Design

This paper proposes an open-circuit fault-tolerant design for the cascaded H-Bridge rectifier incorporating reactive power compensation. If one or two switching devices of the H-bridge modules are fault, the drive signals of the faulty H-bridge modules will be artificially redistributed into the bridgeless mode (including the boost bridgeless mode, the symmetric boost bridgeless mode, the totem-pole bridgeless mode and the symmetry totem-pole bridgeless mode) and cooperate with the normally operated H-bridge modules. In this case, the faulty cascaded H-bridge rectifier is not only able to achieve active power transmission, but also can still provide part of reactive power compensation when injecting reactive power from the power grid. Nonetheless, the reactive power that it can supply will be limited, due to the unidirectional characteristics of the bridgeless mode for the faulty modules. Therefore, a method for calculating its adjustable power factor angle range is also presented, which provides the basis for the faulty modules switching to the bridgeless mode. Then, a control strategy of the cascaded H-bridge rectifier incorporating reactive power compensation under the faulty condition and normal operation is presented. Finally, an experimental platform with a single-phase cascaded H-bridge rectifier containing three cells is given to verify the proposed theories.

Sign in / Sign up

Export Citation Format

Share Document