PWM method

In this paper, a topology incorporating the DC-link type quasi-switched boost network with the traditional three-level neutral point clamped inverter is presented. The third harmonic injection method is proposed to provide some benefits such as: enhancing the modulation index or improving the voltage gain.

8p vijeff 01-12-2023 6 3   Download

In recent year, common mode voltage (CMV) elimination methods are considered to improve the reliability of three-level quasi-switched boost Ttype inverter (TL-qSBT2 I). The space-vector modulation method (SVM) can control the inverter operation to eliminate the CMV.

9p viisac 15-09-2023 3 2   Download

This paper presents a simple carrier based PWM technique to control a hybrid multilevel inverter. A conventional 3-level NPC inverter and 2-level inverter are connected in series to supply an open-end winding three phase load. Proposed PWM method is then verified in steady state and dynamic transient phenomena using MATLAB simulation program.

6p vicaptainmarvel 21-04-2023 8 4   Download

In this article, the primary purpose is to design and implement a remote light control example that makes use of the Arduino IDE platform for programming, the MQTT protocol, and an ESP32 microcontroller, which has a dual-core CPU as well as Wi-Fi and Bluetooth capabilities.

12p vispyker 14-11-2022 46 5   Download

This paper presents the design of a DC – AC 3 phase 2 stages converter using programmable controllers which is performed on PSIM simulation software. The idea of this strategy is to present a method of controlling a large capacity DC-AC 3-phase AC voltage converter, with 380±20 VAC voltage output and 50Hz frequency, which is used for areas that need 3-phase electricity from the solar power system.

10p vibentley 08-09-2022 21 3   Download

This study presents the application of a decentralized control structure of multilevel inverters using the level shift carrier pulse width modulation method (LSC-PWM) as the control algorithm. For the traditional control method, the carrier signal is provided by a central controller.

13p trinhthamhodang1219 06-05-2021 16 3   Download

This paper presents a new control strategy to reduce the fluctuation of DC bus voltage for a backto-back PWM converter in a DFIG wind turbine systems. DC-link voltage Feed-forward compensation control strategy for DFIG’s RSC and GSC converter is proposed to limit the fluctuation range of the dclink voltage. The dynamic performances of the DFIG are compared with the traditional control method.

6p chauchaungayxua11 23-03-2021 14 2   Download

Scoring DNA sequences against Position Weight Matrices (PWMs) is a widely adopted method to identify putative transcription factor binding sites. While common bioinformatics tools produce scores that can reflect the binding strength between a specific transcription factor and the DNA, these scores are not directly comparable between different transcription factors.

13p vikentucky2711 24-11-2020 5 1   Download

This paper proposes a control method of pulse-width modulation (PWM) converters for permanent magnet synchronous generator (PMSG) small wind turbines under distorted grid voltages. The DC-link voltage can be controlled at the machine-side converter (MSC), while the grid-side converter (GSC) controls the grid active power for a maximum power point tracking (MPPT).

9p kequaidan8 02-11-2020 14 1   Download

In order to optimize the electric energy quality of HVDC access point, a modular multilevel selective harmonic elimination pulse-width modulation (MSHE-PWM) method is proposed. On the basis of keeping the minimum action frequency of the power device, MSHE-PWM method can meet the requirement for accurately eliminating low-order harmonics in the output PWM waveform.

7p vivalletta2711 11-01-2020 11 0   Download

This is the first book in a three-volume series deploying MATLAB-based applications in almost every branch of science. This volume, presents interesting topics from different areas of engineering, signal and image processing based on the MATLAB environment. The book consists of 20 excellent, insightful articles and the readers will find the results very useful to their work. This collection of high quality articles, refers to a large range of professional fields and may be used for scientific, engineering and educational purposes....

0p cucdai_1 16-10-2012 131 31   Download

As both vector controlled induction machines and vector controlled SPMSM require current controlled PWM inverter, then it is possible to discuss current control methods independently of the type of the drive. In other words, all the current control techniques described further on are applicable in both induction motor and SPMSM vector controlled drives.

8p liemthanh 15-12-2009 88 9   Download

As both vector controlled induction machines and vector controlled SPMSM require current controlled PWM inverter, then it is possible to discuss current control methods independently of the type of the drive. In other words,

8p nhan321 24-10-2009 62 10   Download