Results 121 to 130 of about 514 (145)

Comparison of Harmonics Between SVPWM and SHEPWM

2018
The traction system of rail transit has the characteristics of low switching frequency and wide speed range, and generally adopts “asynchronous modulation + synchronous modulation + square wave” full-speed range pulse width modulation strategy. In order to realize the smooth transition from asynchronous modulation to square wave modulation, many ...
Ruizheng Ni, Miao Sha, Jia Xiaoguang, Yong Ding, Jie Chen   +4 more
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Dead-Time Elimination Method of High Frequency Inverter with SHEPWM

2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2019
Selective harmonic elimination pulse width modulation(SHEPWM) inverter can eliminate harmonic effectively in theory, but dead-time increases the harmonic component in output voltage. Based on its operating principle, the advance-off mode is taken as an example to analyze the influence of dead-time on SHEPWM inverter, and the waveform figures and output
Yaodong Yang, Yu Tang, Yongjian Li
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Multiple switching patterns for three-level SHEPWM inverter using STM32F4 microcontroller

2017 5th International Conference on Electrical Engineering - Boumerdes (ICEE-B), 2017
This paper presents the application of a multiple switching pattern selective harmonic elimination on three level inverter. The aim of this work is to eliminate low rank harmonics (3rd, 5th, 7th and 9th) from an AC voltage waveform generated by DC to AC converter and also control the fundamental component, the modulation algorithm is based on the ...
Faycal Chabni, Rachid Taleb, Abderrahmen Benbouali   +2 more
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An application of SHEPWM technique in a cascade multilevel inverter

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2005
Purpose In this paper, a new application of the Selected Harmonic Elimination Pulse Width Modulation (SHEPWM) technique used in the cascade multilevel inverter topology which is formed by series connections of one-phase bridge type inverters (H-bridge) is introduced.
Servet Tuncer, Yetkin Tatar
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Multi-mode SHEPWM with low switch frequency for traction application

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017
To eliminate current harmonics and improve voltage utilization. When traction motor was run in high speed area, a new method is proposed that solve the harmonics component is high and transition which from SPWM to SHEPWM then to six-step mode on the condition of low switch frequency. The method was introduced, principles were analyzed and formulas were
Guibin Li, Zedong Zheng, Yongdong Li, Zhiguo Wang, Mengting Tnag   +4 more
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Power losses in T-type and NPC inverters with SHEPWM strategy

2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2017
Power losses of switch devices restrict the performance of inverters. Specific Harmonic Elimination PWM (SHEPWM) strategy has several advantages and great research significance for controlling three-level inverters. This paper analyzes and compares the conduction losses and switching losses of NPC (neural-point-clamped) and T-type inverters with SHEPWM
Pengfei Zhou, Quan Chen, Guoli Li, Cungang Hu   +3 more
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Comparative Study of Optimization Algorithms for SHEPWM Five-Phase Multilevel Inverter

2020 IEEE International Conference on Power and Energy (PECon), 2020
Conversion of DC to AC is widely used as an essential need for the power system to harness renewable power source in this era. Multilevel inverter is a mechanism which capable of harnessing these renewable energies. Unfortunately, harmonics occur in the system due to distortions and causing much unwanted problems at the power output.
Muhammad Aniq Shahmi Bin Bimazlim, Baharuddin Ismail, Muhammad Zaid Aihsan, Siti Khodijah Mazalan, Muhammad Sirajuddin Muhammad Azhar Walter, Mohamad Nur Khairul Hafizi Rohani   +5 more
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Design and implementation of single-phase modified SHEPWM unipolar inverter

2015 IEEE Conference on Energy Conversion (CENCON), 2015
Nowadays, the main target of industrial power and the utility is to save the electrical energy. With the modern industrial system such variable speed drives of the inverter, the system becomes more efficient and the control becomes way simpler. However, it will affect the harmonic in the system and gives an impact to the whole system performance.
M.Z. Aihsan, R.B. Ali, J.H. Leong
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Balance control strategy for Multilevel DC-link inverter based on SHEPWM

2008 27th Chinese Control Conference, 2008
To solve the problem that the output power and switch burthen of each DC-DC converter cell in the multilevel DC-link (MLDCL) inverter are imbalance, a new power balance control strategy is proposed in this paper. By adjusting the control angles of selective harmonic elimination PWM (SHEPWM) in each cell during quarter output cycle of phase voltage to ...
Jinping Chen, Yuyao He, Yongfeng Ju, Feng Ru   +3 more
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Bipolar SHEPWM for Pure Sine Wave Single-Phase Inverter

2022 5th International Conference on Advanced Systems and Emergent Technologies (IC_ASET), 2022
Aymen Chaaira, Rabiaa Gamoudi, Lassaad Sbita   +2 more
openaire   +1 more source