Modeling and Analysis of Novel Modulation Method apply in Three Phase Load

碩士 === 國立交通大學 === 機械工程系所 === 104 === In this thesis, a novel modulation method which combining the concepts of six-step square wave and space vector modulation(SVM) is proposed. This novel modulation, unlike the old modulation methods which has to set dead time between every period of PWM, it’s...

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Main Authors: Chen, Ren-Hao, 陳人豪
Other Authors: 成維華
Format: Others
Language:zh-TW
Published: 2016
Online Access:http://ndltd.ncl.edu.tw/handle/41991271096569213846
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spelling ndltd-TW-104NCTU54891122017-09-06T04:22:26Z http://ndltd.ncl.edu.tw/handle/41991271096569213846 Modeling and Analysis of Novel Modulation Method apply in Three Phase Load 新型無交越死點開關調變法應用於三相阻性-感性負載的模擬與分析 Chen, Ren-Hao 陳人豪 碩士 國立交通大學 機械工程系所 104 In this thesis, a novel modulation method which combining the concepts of six-step square wave and space vector modulation(SVM) is proposed. This novel modulation, unlike the old modulation methods which has to set dead time between every period of PWM, it’s no need to add dead time in the control signal, and has the advantages shown as below: a) This novel modulation method can avoid dead time and improve the energy efficiency by separating the enable time of two transistors in each phase. b) There are only three transistors operating in every section in a cycle of rotation, the others are unable in the same section. With this rule of modulation, it can reduce the switching loss of every transistors. c) The space vector modulation concept can reduce the ripple of output torque in brushless machine. So far the researching progress has already derivate the specified section PWM duty ratio formula of each power transistors. And by using the electrical simulation software PSIM, the simulation model of this novel modulation method has been constructed and tested by three phase inductance-resistance load. Simulation results show that compared with sine-wave modulation(SPWM) and space vector modulation(SVPWM), this novel modulation method has higher output ability. But it’s denotes that there are voltage ripple occur in certain section which has to be avoid by simulation program. For future researching it will test in close loop current and speed control, and using DSP to realize the brushless motor driving. 成維華 鄭時龍 2016 學位論文 ; thesis 83 zh-TW
collection NDLTD
language zh-TW
format Others
sources NDLTD
description 碩士 === 國立交通大學 === 機械工程系所 === 104 === In this thesis, a novel modulation method which combining the concepts of six-step square wave and space vector modulation(SVM) is proposed. This novel modulation, unlike the old modulation methods which has to set dead time between every period of PWM, it’s no need to add dead time in the control signal, and has the advantages shown as below: a) This novel modulation method can avoid dead time and improve the energy efficiency by separating the enable time of two transistors in each phase. b) There are only three transistors operating in every section in a cycle of rotation, the others are unable in the same section. With this rule of modulation, it can reduce the switching loss of every transistors. c) The space vector modulation concept can reduce the ripple of output torque in brushless machine. So far the researching progress has already derivate the specified section PWM duty ratio formula of each power transistors. And by using the electrical simulation software PSIM, the simulation model of this novel modulation method has been constructed and tested by three phase inductance-resistance load. Simulation results show that compared with sine-wave modulation(SPWM) and space vector modulation(SVPWM), this novel modulation method has higher output ability. But it’s denotes that there are voltage ripple occur in certain section which has to be avoid by simulation program. For future researching it will test in close loop current and speed control, and using DSP to realize the brushless motor driving.
author2 成維華
author_facet 成維華
Chen, Ren-Hao
陳人豪
author Chen, Ren-Hao
陳人豪
spellingShingle Chen, Ren-Hao
陳人豪
Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
author_sort Chen, Ren-Hao
title Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
title_short Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
title_full Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
title_fullStr Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
title_full_unstemmed Modeling and Analysis of Novel Modulation Method apply in Three Phase Load
title_sort modeling and analysis of novel modulation method apply in three phase load
publishDate 2016
url http://ndltd.ncl.edu.tw/handle/41991271096569213846
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