EPE Association: NORpie 1998 - Topic 07: POWER ELECTRONICS SYSTEMS II

NORpie 1998 - Topic 07: POWER ELECTRONICS SYSTEMS II
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 1998 > NORpie 1998 - Topic 07: POWER ELECTRONICS SYSTEMS II

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   Online Vector Modulation and Control for Three-Phase Multilevel Converter
By Nikolaus Schibli; Adrian Schaller; Alfred Rufer [View]
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Abstract: Three-phase multilevel converters were proposed to feed high-power induction drives or highspeed drives for flywheels. This paper describes a new vector modulation method together with the vector control for a three-phase multilevel converter. The proposed modulation scheme can reduce the switching losses to a minimum by using an optimized switching scheme. Furthermore, an optimal current quality is received in comparison with the number of commutations. Experimental tests have been done on a 12kW prototype

   An H-bridge Gate Driver for IGBTs and MOSFETs
By Tony Vesterinen; Pertti Silventoinen; Juha Pyrhönen [View]
[Download]

Abstract: A novel driver circuit for IGB-transistors and power MOSFETs is introduced. The driver configuration is simple and robust. The fast responding driver converts single supply voltage to dual output voltage. The basic circuit including controlling of the driver is presented as well as some test results.

   Efficient and Accurate Symmetric Euler Algorithm for Electromechanical Simulations
By Jouko Niiranen [View]
[Download]

Abstract: Many filters, power converters, AC electric motors and their shaft mechanics are characterized by Hamiltonian differential equation systems that are oscillatory in their nature. The low damping causes problems with the accuracy of both the forward and the backward Euler algorithms. However, the symmetric Euler algorithm, which is even simpler than the forward Euler, gives an accuracy that is comparable to the accuracy obtained by the trapezoidal method. The symmetric Euler algorithm is often confused with the forward Euler and is thus quite unknown. An analytic formula for the numerical stability of the symmetric Euler algorithm is presented. Accuracy of the forward Euler, backward Euler, trapezoidal and symmetric Euier algorithms is compared. Some applications are presented in detail.

NORpie 1998 - Topic 07: POWER ELECTRONICS SYSTEMS II
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 1998 > NORpie 1998 - Topic 07: POWER ELECTRONICS SYSTEMS II
	[return to parent folder]

	Online Vector Modulation and Control for Three-Phase Multilevel Converter By Nikolaus Schibli; Adrian Schaller; Alfred Rufer	[View] [Download]
Abstract: Three-phase multilevel converters were proposed to feed high-power induction drives or highspeed drives for flywheels. This paper describes a new vector modulation method together with the vector control for a three-phase multilevel converter. The proposed modulation scheme can reduce the switching losses to a minimum by using an optimized switching scheme. Furthermore, an optimal current quality is received in comparison with the number of commutations. Experimental tests have been done on a 12kW prototype

	An H-bridge Gate Driver for IGBTs and MOSFETs By Tony Vesterinen; Pertti Silventoinen; Juha Pyrhönen	[View] [Download]
Abstract: A novel driver circuit for IGB-transistors and power MOSFETs is introduced. The driver configuration is simple and robust. The fast responding driver converts single supply voltage to dual output voltage. The basic circuit including controlling of the driver is presented as well as some test results.

	Efficient and Accurate Symmetric Euler Algorithm for Electromechanical Simulations By Jouko Niiranen	[View] [Download]
Abstract: Many filters, power converters, AC electric motors and their shaft mechanics are characterized by Hamiltonian differential equation systems that are oscillatory in their nature. The low damping causes problems with the accuracy of both the forward and the backward Euler algorithms. However, the symmetric Euler algorithm, which is even simpler than the forward Euler, gives an accuracy that is comparable to the accuracy obtained by the trapezoidal method. The symmetric Euler algorithm is often confused with the forward Euler and is thus quite unknown. An analytic formula for the numerical stability of the symmetric Euler algorithm is presented. Accuracy of the forward Euler, backward Euler, trapezoidal and symmetric Euier algorithms is compared. Some applications are presented in detail.