EPE Association: EPE-PEMC 2000 - Topic 01b: Multilevel and Matrix Converters

EPE-PEMC 2000 - Topic 01b: Multilevel and Matrix Converters
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2000 - Conference > EPE-PEMC 2000 - Topic 01: Power Converters > EPE-PEMC 2000 - Topic 01b: Multilevel and Matrix Converters

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   Adaptive Overmodulation of Three Phase SVM Controlled Matrix Converter
By Liu C., Zahawi B.A., Petrocelli R. [View]
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Abstract: An adaptive overmodulation method for space vector modulation (SVM) controlled matrix converter is presented in which the linear, sinusoidal operation range is continually optimised to achieve the highest possible voltage transfer ratio with minimum harmonic distortion. A maximum linear modulation index between the theoretical limit of 86.6% and unity is achievable, depending on the frequencies of the input and output voltages and their phase angles. Simulated and experimental results under various operating conditions are given, showing voltage transfer ratios of 0.97 to 0.997 with harmonic distortion levels of less than 2%.

   High Voltage Multilevel Inverters
By Pavelka J. [View]
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Abstract: This contribution describes schemes and methods used in High Voltage Inverters for Large Power Drives and for STATCOMs. The two-level, three-level and multi-level schemes are analyzed and these advantages and disadvantages are specified. Properties of a capacitive divider are analyzed and a control strategy to a uniform voltage distribution is proposed.

   Space Vector Modulated Three-phase to Three-phase Matrix Converter with Unity Power Factor
By Havrila R., Dobrucký B., Balažoviè P. [View]
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Abstract: The paper presents analysis, modeling, and simulation of the space vector modulated three-phase to three-phase matrix converter with input power factor correction. The modulation algorithm is derived from desired transfer functions, using the indirect transfer function approach. The control algorithm is verified through simulation of matrix converter driving the permanent magnet disk synchronous motor (PMSDM) as a load. The resultant output and input currents are to be sinusoidal with unity input power factor.

   The Commutation Process in the Matrix Converter
By Case M.J. [View]
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Abstract: The matrix converter has attracted a limited amount of interest over the past 25 years, but has not achieved the field of application which researchers would prefer. The problem lies in the commutation process between switches in the various phases. The problem has admittedly been addressed, mainly by simply avoiding any possibility of a commutation problem occurring. The object of this paper is to examine the actual problem in the matrix converter commutation process. An ideal model of the switch is presented, and it is shown that even this would barely be implementable.

EPE-PEMC 2000 - Topic 01b: Multilevel and Matrix Converters
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2000 - Conference > EPE-PEMC 2000 - Topic 01: Power Converters > EPE-PEMC 2000 - Topic 01b: Multilevel and Matrix Converters
	[return to parent folder]

	Adaptive Overmodulation of Three Phase SVM Controlled Matrix Converter By Liu C., Zahawi B.A., Petrocelli R.	[View] [Download]
Abstract: An adaptive overmodulation method for space vector modulation (SVM) controlled matrix converter is presented in which the linear, sinusoidal operation range is continually optimised to achieve the highest possible voltage transfer ratio with minimum harmonic distortion. A maximum linear modulation index between the theoretical limit of 86.6% and unity is achievable, depending on the frequencies of the input and output voltages and their phase angles. Simulated and experimental results under various operating conditions are given, showing voltage transfer ratios of 0.97 to 0.997 with harmonic distortion levels of less than 2%.

	High Voltage Multilevel Inverters By Pavelka J.	[View] [Download]
Abstract: This contribution describes schemes and methods used in High Voltage Inverters for Large Power Drives and for STATCOMs. The two-level, three-level and multi-level schemes are analyzed and these advantages and disadvantages are specified. Properties of a capacitive divider are analyzed and a control strategy to a uniform voltage distribution is proposed.

	Space Vector Modulated Three-phase to Three-phase Matrix Converter with Unity Power Factor By Havrila R., Dobrucký B., Balažoviè P.	[View] [Download]
Abstract: The paper presents analysis, modeling, and simulation of the space vector modulated three-phase to three-phase matrix converter with input power factor correction. The modulation algorithm is derived from desired transfer functions, using the indirect transfer function approach. The control algorithm is verified through simulation of matrix converter driving the permanent magnet disk synchronous motor (PMSDM) as a load. The resultant output and input currents are to be sinusoidal with unity input power factor.

	The Commutation Process in the Matrix Converter By Case M.J.	[View] [Download]
Abstract: The matrix converter has attracted a limited amount of interest over the past 25 years, but has not achieved the field of application which researchers would prefer. The problem lies in the commutation process between switches in the various phases. The problem has admittedly been addressed, mainly by simply avoiding any possibility of a commutation problem occurring. The object of this paper is to examine the actual problem in the matrix converter commutation process. An ideal model of the switch is presented, and it is shown that even this would barely be implementable.