PWM on the Basis of Different Configurations of Reference Signals for a Multilevel Converter on H-Bridge

Meshalkin, Vladimir S.; Kuguchev, Dmitry B.; Mansurov, Abilmansur R.

doi:10.1109/edm.2018.8435014

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The two kinds of modulation are composed of new triangular carrier and modulation wave [12]. These two improved modulation methods can balance the power between modules, reduce the switching loss and improve the efficiency [13]. In the following sections, we will compare the three modulation methods, and verify the performance advantages of the new modulation through simulation and experiments.…”

Section: Introductionmentioning

confidence: 99%

Improved Modulation Strategy for Singe-Phase Cascaded H-Bridge Multilevel Inverter

Guo

Wang

et al. 2022

IEEE Trans. Power Electron.

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In this letter, two new improved PWM techniques are proposed for single-phase cascaded H-bridge inverter. Compared with the conventional modulation methods, including phase-shifted pulse width modulation (PS-PWM), level-shifted PWM (LS-PWM), discontinuous modulation (D-PWM), only PS-PWM can ensure the output quality and maintain the power balance between each module. That's why it is widely used. However ， the switch with PS-PWM always operates in a high-frequency mode, resulting in the high switching losses and low efficiency. In order to solve the problem, two improved cascaded H-bridge multilevel PWM methods are proposed in this letter. With the proposed PWM methods, the power can be evenly distributed among modules, the utilization rate of switching devices is the same, while the switching times are reduced, which improves the system efficiency. Finally, the experimental tests are carried out on a digital-control single-phase cascaded H-bridge seven-level inverter. And the experimental results verify the effectiveness of the proposed solution.

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Section: Introductionmentioning

confidence: 99%

Improved Modulation Strategy for Singe-Phase Cascaded H-Bridge Multilevel Inverter

Guo

Wang

et al. 2022

IEEE Trans. Power Electron.

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“…Also, it requires least number of switches and DC sources [13] [14] [15]. Moreover, the complex mathematical process was previously required for finding switching angles for trinary CHB inverter [16]. Vargas et al [17] introduced a sinusoidal pulse width modulation (SPWM) technique developed for 9 level trinary inverter by applying logical operations on carrier waves.…”

Section: Introductionmentioning

confidence: 99%

Design and Control of Novel Grid Tied Multilevel Filter-Less Inverter Using Current Based Sliding Mode Control

et al. 2022

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The role of control techniques is increasing due to the high penetration of renewable energy sources at grid level. The importance of inverters also rises as it balances the supply between the renewable source and grid power system. The issues related to penetration of renewable energy like power quality maintenance, protection against the detection of islanding and maintaining the integrity of grid; control techniques play a vital role to solve these problems. This paper proposed an internal control technique known as current based sliding mode control (SMC) for a filter less multilevel inverter (MLI). The aim of proposed research work is to achieve 27 level output voltage by using an inverter, which approaches sinusoidal wave without using any filters. To control the output of MLI, a current based SMC is implemented in order to achieve the robustness, a good dynamic response, a smaller number of voltage ripples and a smaller current THD. Moreover, a comparative analysis of SMC is done with the conventional PI controller. The response of the controller has been investigated for different cases e.g., introducing sag, swell, faults and harmonics in grid level has been implemented on MATLAB/Simulink. To validate the results of SMC for MLI, an experimental setup was also established which consists of National Instruments (NI) based hardware in loop (HIL) system and dSPACE 1202. The HIL system results show consistency with simulation results. INDEX TERMSFilter less, Hardware in loop (HIL), Multilevel Inverter (MLI), Sliding Mode Control (SMC), Total harmonic distortion (THD)

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A Kind of PWM DC Motor Speed Regulation System Based on STM32 with Fuzzy-PID Dual Closed-Loop Control

Wang¹,

Zaitian²,

Cheng³

et al. 2022

Intelligent Computing Methodologies

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PWM on the Basis of Different Configurations of Reference Signals for a Multilevel Converter on H-Bridge

Cited by 3 publications

References 16 publications

Improved Modulation Strategy for Singe-Phase Cascaded H-Bridge Multilevel Inverter

Improved Modulation Strategy for Singe-Phase Cascaded H-Bridge Multilevel Inverter

Design and Control of Novel Grid Tied Multilevel Filter-Less Inverter Using Current Based Sliding Mode Control

A Kind of PWM DC Motor Speed Regulation System Based on STM32 with Fuzzy-PID Dual Closed-Loop Control

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