Comparative study of SPWM And SVPWM cascaded h-bridge multilevel inverter

Kale, Akshay S.; Tamhane, A. V.; Kalage, Amol A

doi:10.1109/i2c2.2017.8321785

Cited by 13 publications

(3 citation statements)

References 15 publications

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“…Thực tế có nhiều kỹ thuật điều chế để kiểm soát điện áp đầu ra MLI [8][9][10] Giả sử điện áp 1 pha tải có dạng:…”

Section: Kỹ Thuật đIều Khiển Sóng Mang Truyền Thốngunclassified

Modeling and Simulation of New PWM Techniques for Hybrid 7-Level Inverters Using Simplified Switching Table

Dang¹,

Nguyen²

2022

Sci.Tech.Dev.J.-Eng.Tech.

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Nowadays, Cascade H-bridge (CHB) multi-level inverters (MLI) have many applications in the fields of electric drive control, high-power energy control, medium-voltage power grids, and popularization in the conversion of renewable energy power. In order to improve the quality of MLI to meet today's needs while reducing costs, it is necessary to have new methods to improve the working efficiency of the converter. Therefore, this paper presents a novel PWM control for single-phase cascaded hybrid 7-level inverter using simplified switching table (SST). The SST table converts switching states of the traditional multi-level inverter to the switching state of the hybrid cascaded inverter. The SST table is effectively designed to reduce the number of switching when performing output voltage control, thus improving the converter's working efficiency. The PWM method using proposed SST has the advantage of simple implementation, utilizing the traditional Sin-PWM techniques without re-calculating the control function or changing the carrier waveforms. The effectiveness of the proposed method will be evaluated through the voltage and current harmonic distortion factors when applying level shift carrier arrangements (LS-PWM) and speed control application of 3-phase asynchronous motor. Furthermore, in order to prove the advantage of the PWM technique using the proposed SST, the power loss of the 7-level hybrid cascaded inverter is also calculated and compared with traditional seven-level inverter and 3-level inverter. The analysis and modeling results of the 7-level hybrid inverter control are verified and evaluated using MATLAB SIMILINK and PLECS software.

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“…Thực tế có nhiều kỹ thuật điều chế để kiểm soát điện áp đầu ra MLI [8][9][10] Giả sử điện áp 1 pha tải có dạng:…”

Section: Kỹ Thuật đIều Khiển Sóng Mang Truyền Thốngunclassified

Modeling and Simulation of New PWM Techniques for Hybrid 7-Level Inverters Using Simplified Switching Table

Dang¹,

Nguyen²

2022

Sci.Tech.Dev.J.-Eng.Tech.

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“…The basic idea for a seven-level output with six pulses per half cycle using this AIPWM method is shown in Figure 47. Several other SVPWM topologies were discussed [71][72][73][74][75][76][77] by the researchers for three-level inverters and higher levels.…”

Section: Area Integration Pwm Techniquementioning

confidence: 99%

An Extensive Review of Multilevel Inverters Based on Their Multifaceted Structural Configuration, Triggering Methods and Applications

2020

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Power electronic converters are used to transform one form of energy to another. They are classified into four types depending upon the nature of the input and output voltages. The inverter is one among those types; it converts direct electrical current into alternating electrical current at desired frequency. Conventional types of inverters are capable of producing voltage at the output terminal that can only switch between two levels. The range of output voltage generated at the output is low when they are used for high power applications. To improve the voltage profile and efficiency of the overall system, multilevel inverters (MLIs) are introduced. In multilevel inverters the voltage at the output terminal is generated from several DC voltage levels fed at its input. The generated output is more appropriate to a sine wave and the dv/dt rating is also less leading to the reduction in EMI. Though they possess many advantages compared to the conventional inverters, the structural complexity and triggering techniques involved in designing multilevel inverters are high. Many studies are being carried out in defining new topologies of MLI with reduced switch as well as with the implementation of different PWM techniques. This paper will provide an extensive review on variety of MLI configurations based on the parameters such as the number of switches, switching techniques, symmetric, asymmetric, hybrid topologies, configurations based on applications, THD and power quality.

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“…Space vector pulse width modulation strategy is preferred as compared to sinusoidal PWM in VSI consequence of simplicity and easily implementation for digital controller. Further, switching losses reduction, best exploited for DC-voltage, and created least harmonics are SVPWM feature with VSC [9][10]. With 2-level space vector PWW the THD% is less than sinusoidal PWM and switching losses are reduced as a result of voltage change in only one phase every time [11].…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Harmonics and Unbalanced Voltage Disturbance Compensation by MSVPWM Based- DVR in the Distribution Net

Husen¹

2021

KJAR

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Recent power distribution networks comprise abundant sensitive loads, which extremely impact the power quality of source in electrical power networks. Voltage dip, voltage rise, imbalanced voltage, line notching and distortion of harmonics are problems of power quality frequently take place. Pre-disturbance voltage compensation strategy and phase-locked-loop (PLL) based dq- space vector control are presented to improve a Dynamic Voltage Restorer (DVR), which restore the magnitude of voltage disturbance and displacement of phase angle to prior of voltage disturbance. 3-phase Multilevel strategy of Space Vector Pulse Width Modulation (MSVPWM) based- Multilevel Diode Clamped Converter (MDCC) is proposed as switching pulse signals employed low frequency, which creates high levels of voltage and fewer harmonics in the output waveform in comparison to 2-level SVPWM based- DVR. 3-level SVPWM based- DVR under balanced and imbalanced distortion voltage disturbances included sags and swells injected appreciated quantities of voltage, thereby attained ideal sinusoidal waveform with lower Total Harmonic Distortion THD% compared to 2-level SVPWM based- DVR. Furthermore, real and imaginary powers balanced effectively at sensitive load during various distortion voltage disturbance conditions via presented work. The proposed simulation model of multi-level SVPWM based- DVR is implemented by dedicating the software system of MATLAB/SIMULINK. The results of simulation exhibit the effectiveness and efficiency of the presented work under different distortion voltage disturbance conditions.

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Comparative study of SPWM And SVPWM cascaded h-bridge multilevel inverter

Cited by 13 publications

References 15 publications

Modeling and Simulation of New PWM Techniques for Hybrid 7-Level Inverters Using Simplified Switching Table

Modeling and Simulation of New PWM Techniques for Hybrid 7-Level Inverters Using Simplified Switching Table

An Extensive Review of Multilevel Inverters Based on Their Multifaceted Structural Configuration, Triggering Methods and Applications

Mitigation of Harmonics and Unbalanced Voltage Disturbance Compensation by MSVPWM Based- DVR in the Distribution Net

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