检索结果-内蒙古大学图书馆

Relationship between two-level space-vector pulse-width modulation and carrier-based pulse-width modulation in the over-modulation region

引用

IET POWER ELECTRONICS 2014年第1期7卷 189-199页

作者： Fang, Hui Feng, Xiaoyun Song, Wensheng Ge, Xinglai Ding, Rongjun Southwest Jiaotong Univ Dept Elect Engn Chengdu Sichuan Peoples R China

For low voltage motor drive applications, in order to enhance the utilisation rate of dc bus voltage and extend the operating boundary of induction motors, the modulation index is often extended from the linear modulation region to the over-modulation region. The relationship between two-level space-vector pulse-width modulation (SVPWM) and carrier-based pulse-width modulation (CBPWM) in the linear modulation region has been widely investigated and it was shown that the conventional SVPWM is a special type of CBPWM algorithm with zero sequence components injection. On the basis of that, this study focuses on investigating their relationship in the over-modulation region. Firstly, the superposition principle is adopted to analyse the features of SVPWM algorithm in the over-modulation region. Second, the modulating functions of CBPWM equivalent to SVPWM in the over-modulation modes I and II are derived, respectively, which are on the basis of the CBPWM regular sampling rule. Theoretical analysis shows that SVPWM is a special type of CBPWM algorithm not only in the linear modulation region but also in the over-modulation region, which provides a bidirectional bridge for the transformation between SVPWM and CBPWM in the full modulation region. Finally, the validity and effectiveness of the theoretical analysis are verified by simulation and experimental results.

关键词： induction motor drives PWM power convertors space vector pulse width modulation carrier based pulse width modulation over modulation region low voltage motor drive DC bus voltage linear modulation region CBPWM regular sampling rule SVPWM algorithm

来源：评论

学校读者我要写书评

暂无评论

Analysis of experimental investigation of various carrier-based modulation schemes for three level Neutral Point Clamped inverter-fed induction motor drive

Analysis of experimental investigation of various carrier-ba...

引用

IEEE International Conference on Power Electronic, Drives and Energy Systems

作者： Behera, Ranjan K. Dixit, T. V. Das, Shyama P. Indian Inst Technol Dept Elect Engn Kanpur 208016 Uttar Pradesh India

ISBN: (纸本)9780780397712

The harmonic analysis of the stepped waveform of the three-level inverter, based on number of triangular carriers and a sinusoidal modulating signal has been described. Analytical solutions of different multilevel pulse width modulation (PWM) strategies for three-level Neutral Point Clamped (NPC) has been presented. Analysis of the Total Harmonic Distortion (THD) of voltage and stator current has been carried out by simulation study. These solutions show that In-Phase Sinusoidal pulse width modulation (IPSPWM) strategy shows better spectral performance compared to the Phase Opposite Sinusoidal pulse width modulation (POSPWM) and dipolar modulation techniques. This is because of the fact that it places significant harmonic energy in to main carrier component and relies on the cancellation of this component between phase legs when the line-to-line voltages are formed. All these techniques are applied to an induction motor drive for comparison. Torque ripple is also estimated for different techniques. A laboratory model is developed to verify validity of different modulation schemes.

关键词： carrier based pulse width modulation diode-clamped inverter multilevel converter multilevel inverter and THD

来源：评论

学校读者我要写书评

暂无评论

A Novel Offset Function for Three-Level T-Type Inverter to Reduce Switching Loss

A Novel Offset Function for Three-Level T-Type Inverter to R...

引用

International Conference on System Science and Engineering (ICSSE)

作者： Vinh-Thanh Tran Thanh-Hai Quach Duc-Tri Do Minh-Khai Nguyen My-Ha Le Ngoc-Anh Truong Ho Chi Minh City Univ Technol & Educ Ho Chi Minh City Vietnam Queensland Univ Technol Brisbane Qld Australia

ISBN: (纸本)9781728105253

In this paper, a new pulse width modulation (PWM) scheme for three-level T-type inverter is proposed to reduce switching loss of the inverter. The proposed modulation technique is based on the offset function being 3rd harmonic voltage. The control voltage of phase, which has largest absolute value of load current, moves into the top or bottom of the carriers to have no switching in this phase. Therefore, the switching loss of the inverter is reduced. The switching loss of the inverter with the proposed PWM method is 33% lower compared to the conventional sinusoidal PWM method. The theoretical analysis is verified by simulation and experimental results.

关键词： reducing the number of switching losses carrier based pulse width modulation offset function multilevel inverter

来源：评论

学校读者我要写书评

暂无评论

Cascaded Multilevel Inverters Fault Control

Cascaded Multilevel Inverters Fault Control

引用

International Aegean Conference on Electrical Machines and Power Electronics / Electromotion Joint Conference

作者： Farzaneh, Alireza Nazarzadeh, Jalal Islamic Azad Univ Islamshahr Branch Sama Tech & Vocat Training Coll Elect Engn Islamshahr Iran Shahed Univ Elect Engn Tehran Iran

ISBN: (纸本)9781467350037;9781467350044

This paper proposes a new control method to increase cascaded multilevel inverters (CMI) efficiency at faulty condition. The influence of most probability fault on CMI with carrier based pulse width modulation (CBPWM) is investigated and the maximum output voltage is derived without elimination of faulty power cell. This method is able to produce balanced phase voltage on faulty phase. In addition proposed method can be used in the H -bridge cascaded multilevel inverter of any voltage levels. Simulation results are provided.

关键词： Multilevel inverters carrier based pulse width modulation Open circuit fault

来源：评论

学校读者我要写书评

暂无评论

New 3-level Submodules for a Modular Multilevel Converter based HVDC System with Advanced Features

New 3-level Submodules for a Modular Multilevel Converter ba...

引用

39th Annual Conference of the IEEE Industrial-Electronics-Society (IECON)

作者： Sahoo, Ashish Kumar Otero-De-Leon, Ruben Chandrasekaran, Visweshwar Mohan, Ned Univ Minnesota Dept Elect & Comp Engn Minneapolis MN 55455 USA

ISBN: (纸本)9781479902248

Modular multilevel converters have emerged as a viable solution over conventional voltage source converters (VSC) for applications in high voltage direct current (HVDC) transmission. Due to modular structure, the converter can reach high number of voltage levels resulting in low switching frequency and near sinusoidal voltage waveforms. This paper proposes new submodule topologies which can result in even higher voltage levels with reduced voltage stress across some switches and lower semiconductor losses. A modified modulation scheme and voltage balancing algorithm is proposed for the new topology and is validated by MATLAB/Simulink simulations. A comprehensive comparative analysis with other available submodule topologies is presented to show the added benefits.

关键词： Modular multilevel converter (MMC) HVDC Submodules (SM) carrier based pulse width modulation Voltage balancing algorithm

来源：评论

学校读者我要写书评

暂无评论

Symmetrical and Asymmetrical Multilevel Inverter using Less Number of switches

Symmetrical and Asymmetrical Multilevel Inverter using Less ...

引用

IEEE Region 10 Conference (TENCON)

作者： Thakre, Kishor Mohanty, Kanungo Barada Kommukuri, Vinayasagar Mishra, Rabi Narayan Natl Inst Technol Rourkela Dept Elect Engn Rourkela Odisha India

ISBN: (纸本)9781509011346

This paper presents a design and implantation of a modified topology for multilevel inverter (MLI). The proposed topology can be utilized in both symmetrical and asymmetrical source configuration. The proposed topology composed of cascaded basic module with H-bridge. The proposed concept is compared with conventional and some recent topologies. As a results proposed topology required less number of power electronics switches, which lead to reduction in size and cost of the circuit. carrier based pulse width modulation control method is developed to achieve switching signals. The performance and operation of proposed topology is verified through simulation study through MATLAB/Simulink and validated experimentally for 11-level and 15-level inverter.

关键词： MLI topology carrier based pulse width modulation less number of switches

来源：评论

学校读者我要写书评

暂无评论

Novel carrier based PWM Techniques Reduce Common Mode Voltage for Six Phase Induction Motor Drives

引用

INTERNATIONAL JOURNAL OF ADVANCED COMPUTER SCIENCE AND APPLICATIONS 2019年第5期10卷 287-299页

作者： Ngoc Thuy Pham Nho Van Nguyen Ind Univ Ho Chi Minh Dept ET Ho Chi Minh City Vietnam Ho Chi Minh Univ Technol Dept EEE Ho Chi Minh City Vietnam

This paper proposes a novel pulse width modulation (CBPWM) technique for reducing the common mode voltage for a six-phase induction motor (SPIM) drive. This proposed CBPWM technique relies on setting up offset functions and the phase shift of carrier wares. Common mode voltage occurs under the effect of DC power Vd always in Vd/6 limits. Some ways of designing the offset function are proposed;these proposed strategies permit to reduce either the mean value or the instantaneous value of the common mode voltage. Features of proposal CBPWM solutions have been compared. Simulation and experimental results demonstrate the feasibility of the proposed solution.

关键词： Six phase induction motor six-phase voltage source inverter common mode voltage carrier based pulse width modulation

来源：评论

学校读者我要写书评

暂无评论

New 3-level Submodules for a Modular Multilevel Converter based HVDC System with Advanced Features

New 3-level Submodules for a Modular Multilevel Converter ba...

引用

Annual Conference of the IEEE Industrial Electronics Society

作者： Ashish Kumar Sahoo Ruben Otero-De-Leon Visweshwar Chandrasekaran Ned Mohan Department of Electrical and Computer Engineering University of Minnesota

ISBN: (纸本)9781479902255

关键词： Modular multilevel converter (MMC) HVDC Submodules (SM) carrier based pulse width modulation Voltage balancing algorithm

来源：评论

学校读者我要写书评

暂无评论

High Frequency Link Multi-winding Power Electronic Transformer using Modular Multilevel Converter for Renewable Energy Integration

High Frequency Link Multi-winding Power Electronic Transform...

引用

Annual Conference of the IEEE Industrial Electronics Society

作者： Ashish Kumar Sahoo Ned Mohan Department of Electrical and Computer Engineering University of Minnesota

ISBN: (纸本)9781479940318

Grid integration of multiple renewable energy sources using a power electronic transformer (PET) topology is presented in this paper. A modular multilevel converter (MMC) is proposed as the power converter on the high voltage grid side to generate high frequency sinusoidal voltages. A single multi-winding high frequency transformer (HFT) interfaces different wind generators/photovoltaic arrays using many H-bridge converters and PWM inverters. The leakage inductance of the transformer acts as the smoothening filter for the current through the HFT. With sinusoidal voltages and smooth currents through the transformer, there is significant reduction in transformer losses and also natural commutation of leakage energy is obtained. The operating principle, modulation and control of the proposed PET is validated by simulations in MATLAB/Simulink.

关键词： Modular multilevel converter (MMC) Power electronic transformer (PET) Multi-winding transformer carrier based pulse width modulation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：