Multi-level inverter capable of power factor control with DC link switches

Sun, Ho-Dong; Cha, Honnyong; Kim, Heung-Geun; Chun, Tae-Won; Nho, Eui‐Cheol

doi:10.1109/apec.2012.6166040

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…Even though number of switches and number of DC sources become reduced compared to the exsting system ,inverter design become complicated because it does not have a modular structure. Total harmonic distortion in the output voltage is 15.76% [11]. …”

Section: Dnine Level Multi String H-bridge Multilevel Invertermentioning

confidence: 99%

A novel multilevel inverter using single carrier PWM technique

Sruthi¹,

Saritha²

2014

2014 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2014]

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This paper focuses on a nine level multilevel inverter with DC link capacitors at the input side. The main disadvantage of cascaded multilevel inverter is the number of DC sources. So a nine level multilevel inverter with DC link switches, which requires less number of DC sources as compared to the conventional multilevel inverter is proposed. Single carrier method is the control strategy used here. A comprehensive literature survey on existing nine level multilevel inverter is carried out. The feasibility of the proposed nine level inverter is verified through simulation. Proposed nine level inverter is compared with the conventional H bridge multilevel inverter.

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Section: Dnine Level Multi String H-bridge Multilevel Invertermentioning

confidence: 99%

A novel multilevel inverter using single carrier PWM technique

Sruthi¹,

Saritha²

2014

2014 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2014]

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“…Nedumgatt et al [12] also introduced a multilevel inverter with reduced number of switches. Ho-Sun et al [13] proposed a multi-level inverter capable of power factor control with dc link switches. Adam et al [14] decribes a quasi-two-level and three-level operation of a diode-clamped multilevel inverter using space vector modulation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Various Carriers Overlapping PWM Strategies for a Single Phase Ternary Multilevel Inverter

Balamurugan

Bensraj

2018

IJAPE

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<p>Multilevel inverters are used in power conversion system due to improved voltage and current waveforms. This paper presents the comparison of various Carrier Overlapping Pulse Width Modulation (COPWM) Strategies for the three phase Cascaded Multi Level Inverter (CMLI). Various new schemes adopting the constant switching frequency and also variable switching frequency multicarrier control freedom degree combination concepts are developed and simulated for the chosen three phase CMLI. A single phase CMLI is controlled in this paper with Sinusoidal PWM (SPWM) reference along with Carrier Overlapping (CO) techniques and simulation is performed using MATLAB-SIMULINK. The variation of fundamental RMS output voltage and total harmonic distortion is observed for various carrier overlapping techniques. Among the various equal amplitude and unequal amplitude carriers carrier overlapping techniques such as COPWM-A, COPWM-B and COPWM-C, It is observed from Table 4 that all PWM method provides output with relative low distortion for equal amplitude carriers. If equal voltage sources are chosen then the THD will be less in the case of unequal amplitude carriers. But for the unequal voltage sources the THD is more in the case of unequal amplitude carriers. It is observed from simulation results that (Table-5) almost in all the strategies unequal amplitude carriers gives more fundamental RMS values compared to equal amplitude carriers. It is seen from table 6 that peak voltage is more in the case of unequal amplitude carriers compared to equal amplitude carriers. It is observed from the table 7 that dc components are less in both equal and unequal amplitude carriers.</p>

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“…Bayat and Babaei [10] a new cascaded multilevel inverter with reduced number of switches. Sun [11] multi-level inverter capable of power factor control with dc link switches.…”

Section: Introductionmentioning

confidence: 99%