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Optimal PWM techniques in voltage so...

Li, Li.

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Optimal PWM techniques in voltage source inverters.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Optimal PWM techniques in voltage source inverters./
作者:	Li, Li.
面頁冊數:	117 p.
附註:	Adviser: Dariusz Czarkowski.
Contained By:	Dissertation Abstracts International59-11B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9912451
ISBN:	059910774X

Optimal PWM techniques in voltage source inverters.
Li, Li.

Optimal PWM techniques in voltage source inverters. - 117 p.

Adviser: Dariusz Czarkowski.

Thesis (Ph.D.)--Polytechnic University, 1999.

Selected topics of pulse-width modulation (PWM) techniques in voltage source inverters are investigated in this dissertation. Programmed PWM, also known as selected harmonic elimination PWM (SHEPWM), is the main focus of this research. SHEPWM approach allows for optimization of various performance indexes of power electronic systems.

ISBN: 059910774XSubjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Optimal PWM techniques in voltage source inverters.
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245 1 0 $a Optimal PWM techniques in voltage source inverters.
300 $a 117 p.
500 $a Adviser: Dariusz Czarkowski.
500 $a Source: Dissertation Abstracts International, Volume: 59-11, Section: B, page: 5994.
502 $a Thesis (Ph.D.)--Polytechnic University, 1999.
520 $a Selected topics of pulse-width modulation (PWM) techniques in voltage source inverters are investigated in this dissertation. Programmed PWM, also known as selected harmonic elimination PWM (SHEPWM), is the main focus of this research. SHEPWM approach allows for optimization of various performance indexes of power electronic systems.
520 $a A new method of solution of nonlinear transcendental systems of SHEPWM equations is proposed. The method uses computer algebra tools, namely, Gröbner Bases. It allows for simplification of the SHEPWM equations to a single polynomial equation. This approach can be potentially useful for real-time system applications. It also offers solutions that are not critically dependent on the starting point of calculations as is the case with currently used Newton iteration methods. Its drawback is a complicated form of polynomial coefficients.
520 $a A new programmed PWM technique has been developed for the area of constant-amplitude constant-frequency static power inverters such as uninterruptible power supply systems. The total harmonic distortion of the voltage at the output of a passive <italic> L-C</italic> filter has been used as a performance index. With the new technique, the performance index has been significantly improved without any hardware cost.
520 $a Two novel concepts of SHEPWM in multilevel voltage source inverters are proposed and verified. Firstly, a mirror surplus harmonic suppression PWM technique and its mathematical model are introduced for two-cell series-connected inverters. The mirror surplus harmonic technique reduces computational requirements in obtaining approximate harmonic cancellation. Simulation and experimental results of this technique are presented. Secondly, a generalized multilevel SHEPWM is developed. Simulation and experimental results are given for a two-cell inverter. Simulation results for a high-power five-cell inverter are also given. A phase-shift method for obtaining optimization starting points is introduced.
590 $a School code: 0179.
650 4 $a Engineering, Electronics and Electrical. $3 626636
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710 2 0 $a Polytechnic University. $3 1249856
773 0 $t Dissertation Abstracts International $g 59-11B.
790 $a 0179
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791 $a Ph.D.
792 $a 1999
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