Analysis of Fuzzy Controller for H-bridge Flying Capacitor Multilevel Converter
01 Jan 2017-pp 307-317
TL;DR: Fuzzy controllers are designed for the different voltage levels of H-bridge flying capacitor multilevel converter to control the Root Mean Square output voltage and by using phase shifted carrier pulse width modulation technique (PSCPWM) the root mean square output voltage is controlled.
Abstract: The Normal voltage balancing property of capacitor voltage has an attractive choice of an flying capacitor converters. The study of H-bridge flying capacitor converter with 5, 7 and 9 levels are carried out and to increase the voltage levels falls the Total Harmonic Distortion. By using phase shifted carrier pulse width modulation technique (PSCPWM) the root mean square output voltage is controlled. For effective output voltage control, fuzzy controller is used. Fuzzy controllers are designed for the different voltage levels of H-bridge flying capacitor multilevel converter to control the Root Mean Square (RMS) output voltage. The Performances of the fuzzy controllers with multilevel converters of H-bridge flying capacitor for different levels are studied.
Citations
More filters
01 Jan 1992
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Abstract: The authors discuss high-voltage power conversion. Conventional series connection and three-level voltage source inverter techniques are reviewed and compared. A novel versatile multilevel commutation cell is introduced: it is shown that this topology is safer and more simple to control, and delivers purer output waveforms. The authors show how this technique can be applied to either choppers or voltage-source inverters and generalized to any number of switches.<>
1,202 citations
Patent•
22 Aug 2011
TL;DR: The connection point in the first series circuit of switching devices is connected through a reactor to an input-output common connection line connected to one end of an AC power supply and the other end of the ACPower supply is connected to the connection point of capacitors.
Abstract: Provided is an electric power converter. A First and second series circuits of switching devices and a series circuit of capacitors are connected in parallel. Between the connection point in the first series circuit of switching devices and the connection point in the series circuit of capacitors, a first bidirectional switch is connected and, between the connection point in the second series circuit of switching devices and the connection point in the series circuit of capacitors, a second bidirectional switch is connected. The connection point in the first series circuit of switching devices is connected through a reactor to an input-output common connection line connected to one end of an AC power supply and the other end of the AC power supply is connected to the connection point in the series circuit of capacitors.
204 citations
01 Jan 2019
TL;DR: This chapter presents the experiment of symmetrical cascaded switched-diode multilevel inverter (SCSD MLI) with fuzzy controller for a different number of levels to reduce the number of power semiconductor switches along with its gate driver circuits as theNumber of level increases.
Abstract: This chapter presents the experiment of symmetrical cascaded switched-diode multilevel inverter (SCSD MLI) with fuzzy controller for a different number of levels. The objective of this topology is to reduce the number of power semiconductor switches along with its gate driver circuits as the number of level increases; therefore, the complexity of the circuit and installation cost of the converter are reduced when compared with the conventional cascaded multilevel inverter and cascaded half-bridge multilevel inverter. In this document, seven-, nine-, eleven-level SCSD MLIs are analyzed with simulation results which describe the total harmonic distortion reduction with the increment in number of levels. For this circuit topology, phase disposition pulse-width modulation technique is developed to regulate the RMS output voltage of inverter. In order to maintain the RMS output voltage, appropriate fuzzy controllers are constructed. MATLAB/SIMULINK simulation results of seven-level, nine-level, and eleven-level are presented to justify the performance of the suggested topology.
10 citations
22 Mar 2019
TL;DR: This paper presents the VSC based M-MC of high power converters, which the controller controls the voltage on the load using a PI controller, and the simulation results of converter voltage, converter current, grid voltage, grid current, PI error voltage, three-phase instantaneous real power, and reactive power obtained to justify the achievement of the suggested topology.
Abstract: Multi-level converters have gained a reputation in both Medium-Voltage and Low-Voltage applications. To find out the connections among several multilevel Voltage Source Converter (VSC) topologies and to expose in what way to attain innovative topologies. Between them, VSC attained the main market share and taken obvious improvements in the earlier time. The most topical developments in the VSCs is a Modular Multi-level Converter (M-MC). This configuration has a modular structure; power rating and voltage of the converter can be enlarged by accumulating the Sub-Modules (SM) in series. This paper presents the VSC based M-MC of high power converters, which the controller controls the voltage on the load using a PI controller. The simulation results of converter voltage, converter current, grid voltage, grid current, PI error voltage, three-phase instantaneous real power, and reactive power obtained to justify the achievement of the suggested topology.
Cites background from "Analysis of Fuzzy Controller for H-..."
...It hires a cascade construction of SM to influence the preferred structure voltage, whereas manufacturing a high-grade multilevel output voltage waveform [5]....
[...]
01 Jan 2020
TL;DR: The Flying Capacitor Multilevel Converter with 5, 7, 9 and 11-levels is studied to get better performance of medium voltage (MV) and high power electric drive, the dv/dt and the Total Harmonic Distortions (THD) should be minimized by the introduction of more levels in the output voltage.
Abstract: The Flying Capacitor Multilevel Converter (FCMC) brings quite significant attention in the recent years. It is easier to extend the topology to a high number of levels when compared to other multilevel topology, namely the diode-clamped multilevel converter (DCMC). This is due to difficulties of DCMC for achieving capacitor voltage balance. On the other hand, the voltages in the capacitors of the FCMC can be con- trolled due to the availability of redundant switching states. The study of the FCMC with 5, 7, 9 and 11-levels are carried out. In order to get better performance of medium voltage (MV) and high power electric drive, the dv/dt and the Total Harmonic Distortions (THD) should be minimized by the introduction of more levels in the output voltage. The Phase-Shifted Carrier Pulse Width Modulation Technique (PSC-PWM) are used to control the Root Mean Square (RMS) output voltage. For more effective, the output voltage is mainly controlled by Fuzzy Logic Controller (FLC). This FLC is intended for different voltage levels of FCMC to Control the RMS output voltages. The simulation results shows the performance of RMS voltage and significant reduction of THD is controlled by FLC.
References
More filters
01 Jan 1980
TL;DR: In this article, a neutral-point-clamped PWM inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed.
Abstract: A new neutral-point-clamped pulsewidth modulation (PWM) inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed. This inverter output contains less harmonic content as compared with that of a conventional type. Two inverters are compared analytically and experimentally. In addition, a new PWM technique suitable for an ac drive system is applied to this inverter. The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
4,432 citations
TL;DR: The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
Abstract: A new neutral-point-clamped pulsewidth modulation (PWM) inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed. This inverter output contains less harmonic content as compared with that of a conventional type. Two inverters are compared analytically and experimentally. In addition, a new PWM technique suitable for an ac drive system is applied to this inverter. The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
4,328 citations
"Analysis of Fuzzy Controller for H-..." refers background in this paper
...Compared to the diode clamped [13] and H-bridge inverters [14–16], the H-bridge flying capacitor multilevel inverter (HBFCMLI) is the new topology [1–5]....
[...]
01 Jan 1992
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Abstract: The authors discuss high-voltage power conversion. Conventional series connection and three-level voltage source inverter techniques are reviewed and compared. A novel versatile multilevel commutation cell is introduced: it is shown that this topology is safer and more simple to control, and delivers purer output waveforms. The authors show how this technique can be applied to either choppers or voltage-source inverters and generalized to any number of switches.<>
1,202 citations
29 Jun 1992
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Abstract: The authors discuss high-voltage power conversion. Conventional series connection and three-level voltage source inverter techniques are reviewed and compared. A novel versatile multilevel commutation cell is introduced: it is shown that this topology is safer and more simple to control, and delivers purer output waveforms. The authors show how this technique can be applied to either choppers or voltage-source inverters and generalized to any number of switches. >
1,197 citations
TL;DR: In this article, a new approach to medium-voltage variable-frequency static AC motor drives was proposed to improve the power quality of the motor by improving motor voltage and current waveforms.
Abstract: A new approach to medium-voltage variable-frequency static AC motor drives offers improvements in power quality. Harmonic current injection into the power lines is below the most severe requirements of IEEE Standard 519-1992. The power factor of this new type of drive exceeds 94% at full load and is above 90% at 10% load. Motor voltage and current waveforms are improved so that torque pulsations are reduced. Peak voltage stress on motor insulation does not exceed peak input line voltage, and no zero sequence voltage is imposed. Drive efficiency exceeds 96%. This paper describes the new approach and some of the results achieved.
841 citations