Comparative Study of Unipolar Multicarrier PWM Strategies for Five Level Diode Clamped Inverter

Sengolrajan, T.; Shanthi, B.

doi:10.1007/978-81-322-1035-1_16

Cited by 2 publications

(6 citation statements)

References 9 publications

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“…A boost switched-capacitor (SC) multilevel inverter is formed by cascading two structures, a switched capacitor network and a two level inverter [6] - [8]. By cascading N-number of switched capacitor cells generates (2N+3) levels in the output and the maximum output voltage is (N+1)V dc .…”

Section: Circuit Topology Of Seven Level Invertermentioning

confidence: 99%

“…Sinusoidal Phase Disposition (PD) uses six triangular carrier and all the carriers are in phase with each other shown in figure 7. In Phase Opposition Disposition (POD) the carrier signals above the zero axis and below the zero axis have same frequency, same amplitude and but 180˚ out of phase [6] - [8]. But in Alternative Phase Opposition Disposition (APOD) alternate carriers are phase shifted by 180˚ from its neighbour.…”

Section: A Sinusoidal Multicarrier Pwmmentioning

confidence: 99%

“…Multilevel inverters are mainly controlled by Multicarrier Pulse Width Modulation method and the harmonic contents can be reduced by using PWM techniques [6]. There are two PWM methods mainly used in multilevel inverter control strategy [7].…”

Section: Introductionmentioning

confidence: 99%

“…Among these PWM methods SPWM is mostly used for the multilevel inverter, because it is very simple and easy to implement. In this paper, SPWM method with the different carrier based PWM such as Phase Disposition (PD) PWM, Phase Opposition Disposition (POD) PWM, Alternate Phase Opposition Disposition (APOD) PWM, Variable Frequency (VF) PWM, Carrier Overlapping (CO) PWM and Sampling PWM has been analysed [6] [7].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of THD Spectrum on Switched Capacitor Inverter

Bhagyalakshmi¹,

Varghese²,

Jos³

2017

IJEEE

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Multilevel inverter is a commonly used power electronic device because of its characteristics of synthesizing a sinusoidal output on several steps. They give good quality output resulting with lower harmonic distortion in the output. This topology is designed based on Switched Capacitor with charge pump technique and the number of output levels is determined by the number of Switched Capacitor (SC) cells used. A small input voltage can be used to produce a boosted output voltage, by switching the capacitors in series and in parallel by properly switching the power electronic switches. Number of switching devices used in the circuit is reduced as compared to the conventional cascaded multilevel inverter. This work also presents the comparative study of controllers using various Multicarrier Pulse Width Modulation (MCPWM) techniques. Performance factors such as % THD, voltage stress, ripple voltage etc. are measured for different modulation techniques and the results are studied. MCPWM method with the different modulating signal based PWM such as Sinusoidal Multicarrier PWM, Sampling PWM, Rectified Sinusoidal PWM and Trapezoidal PWM has been analyzed. The simulations are done with MATLAB/ SIMULINK software. From the simulation results seven level inverter shows less THD using Alternate Phase Opposition Disposition (APOD) PWM. The control strategy is the key part for the circuit and switching signals are generated with the help of PIC16F877A microcontroller.

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Section: Circuit Topology Of Seven Level Invertermentioning

confidence: 99%

Section: A Sinusoidal Multicarrier Pwmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Study of THD Spectrum on Switched Capacitor Inverter

Bhagyalakshmi¹,

Varghese²,

Jos³

2017

IJEEE

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“…Many control techniques are available in literature [9]. Phase disposition sinusoidal pulse width modulation (PS-SPWM) scheme are used to generate gate signals shown in Fig.…”

Section: B Control Stratergymentioning

confidence: 99%

A Novel Dual-Input Asymmetrical 17-Level Inverter

Anushka¹

2018

IJRASET

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Multilevel inverters are the new structures of power electronic circuits that are used in high voltage DC-AC conversion systems. These kinds of inverters create more output voltage levels which reduce the harmonic components. This paper presents a new dual-input asymmetrical single phase multilevel inverter topology capable of producing seventeen level output voltage with reduced number of devices. In order to obtain the desired output voltage, capacitors are connected in all the combination of addition and subtraction through different switches. Inherent creation of the negative voltage levels without any additional circuit, such as H-bridge circuit is one of the main advantage of proposed module. In addition, the module has inherent selfbalancing property. Comparison between the existing topologies shows that the proposed topology requires less number of components. Proposed topology is modeled and simulated using MATLAB/Simulink 2017 software in order to verify the feasibility and performance of the module. A phase disposition sinusoidal pulse-width modulation strategy is used in this inverter. The results show that the proposed topology is capable to produce a seventeen-level output voltage with less number of component counts and acceptable harmonic distortion content. A prototype of proposed inverter is designed, analyzed and implemented using Arduino Mega 2560. Keywords: Multilevel inverter, asymmetrical, sinusoidal pulse-width modulation, Total Harmonic Distortion (THD), seventeenlevel. I. INTRODUCTIONMultilevel inverters (MLIs) have been innovated as necessary cost benefit devices with a wide range of applications. They have been in the focus for decades because of interesting features such as high quality output voltage, operation in high voltage/power, low harmonic components, low stress on switches, high efficiency, modularity, scalability etc. Multilevel converters have a wide range of applications which has rapidly developed the area of power electronics with good potential for further technology. MLIs with salient features become attractive converters for medium/high power applications in comparison with two levels inverters at the applications of PV farms, wind turbine, active power filer, drives systems and electrical vehicle . Multilevel converters are different arrangements of semiconductor switches with DC links to create n-level output waveform. The concept is to produce higher voltage output in small voltage steps by utilizing more dc sources and switches. As the number of voltage steps increase the output waveform of the inverter approaches near to sinusoidal waveform. The Cascaded H-bridge (CHB), Neutral Point Clamped (NPC), and Flying Capacitor (FC) are the basic multilevel inverter topologies [1]. In 1981, NPC was introduced as the first multilevel converter which can be used in medium voltage applications. The main disadvantage of NPC topology is that the required number of clamping diodes is quite high and for higher number of voltage levels this topology will be impractical...

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Comparative Study of Unipolar Multicarrier PWM Strategies for Five Level Diode Clamped Inverter

Cited by 2 publications

References 9 publications

Comparative Study of THD Spectrum on Switched Capacitor Inverter

Comparative Study of THD Spectrum on Switched Capacitor Inverter

A Novel Dual-Input Asymmetrical 17-Level Inverter

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