EPE Association: EPE 1991 - 20 - Session 2.9: TEACHING

EPE 1991 - 20 - Session 2.9: TEACHING
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   THE POWER ELECTRONICS TEACHING LABORATORY AT GLASGOW UNIVERSITY
By T. J. E. Miller; W. Duncan; C. Cossar; I. Young [View]
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Abstract: This paper describes a final-year undergraduate laboratory in power electronics, with particular detail on two experiments designed to illustrate several core principles of switch-mode power conversion and the basic details of transistor switching waveforms. The experiments are self-contained and do not rely on prior lectures. Theory is restricted to simple equations of circuit analysis so that the waveforms encountered can be analysed and understood with simple on-the-spot calculations. In the case of the transistor-switching experiment, the switching speed of the power MOSFET is slowed down so that the detail of its switching waveforms can easily be seen by timebase expansion on a relatively inexpensive digital storage oscilloscope.

   COMPUTER-AIDED EDUCATION OF POWER ELECTRONICS
By N. Mohan; W. P. Robbins; T. M. Undeland [View]
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Abstract: There is a growing need for the use of circuit simulation programs in power electronics education. This paper considers this need and the difficulties that must be overcome in order to use simulation programs in an educational setting. The strengths and weaknesses of several simulation programs are considered from an educational use viewpoint. A novel approach to the use of simulation in power electronics courses is suggested by means of examples.

   TRANSIENT STUDY OF A SINGLE-PHASE PULSE CONVERTER (SPPC) WITH A VSI-IM TRACTION DRIVE LOAD
By B. Yang; H. Zelaya-de la Parra; J. A. Taufiq [View]
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Abstract: Pulse converters, also known as four-quadrant converters, have the capability of transmitting power bidirectionally and achieving near unity power factor with a nearly sinusoidal input current waveform. They are ideal front end power conversion devices for inverter fed traction drive systems. This paper presents the implementation of the control schemes for the SPPC system, namely the voltage vector control (VVC) scheme and the direct current control (DCC) scheme. In order to provide a realistic load for the SPPC system, a VSI fed IM drive system is included in a full scale traction drive system simulator. System transient analysis methods are generalized and outlined. Transient tests under various system disturbances are carried out comparatively for the two schemes in order to compare the relative performance. It can be concluded from the study that, from the control viewpoint, the DCC scheme presents some advantages over the VVC scheme.

   TEACHING FIELD ORIENTED CONTROL OF VSI AND CSI FED ASYNCHRONOUS AND PERMANENT MAGNET SYNCHRONOUS MACHINES USING A PROGRAMMABLE HIGH SPEED CONTROLLER
By R. G. Harley; M. T. Wishart; G. Diana [View]
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Abstract: This paper describes a structured and coherent system for the teaching of Field oriented control (FOC) to graduate students and engineers in industry. The system consists of a learning stage and an implementation stage. During the learning stage, the engineer is taught the fundamentals of FOC via the block diagram form of the machine equations in an easy-to-follow step-by-step manner. He then learns how to design controllers to implement FOC, and conducts simulations of his system using high-level simulation packages. ln the second stage he implements his design on a programmable high speed controller. This controller is easy to program, and allows the engineer to concentrate on the control issues involved, and to not get bogged down in microprocessor issues. Using this educational system, the time involved for the whole process typically takes less than six months. This includes undestanding of the theory, the development of computer simulations, the design of the controllers, and the full documentation of the project.

EPE 1991 - 20 - Session 2.9: TEACHING
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1991 - Conference > EPE 1991 - 20 - Session 2.9: TEACHING
	[return to parent folder]

	THE POWER ELECTRONICS TEACHING LABORATORY AT GLASGOW UNIVERSITY By T. J. E. Miller; W. Duncan; C. Cossar; I. Young	[View] [Download]
Abstract: This paper describes a final-year undergraduate laboratory in power electronics, with particular detail on two experiments designed to illustrate several core principles of switch-mode power conversion and the basic details of transistor switching waveforms. The experiments are self-contained and do not rely on prior lectures. Theory is restricted to simple equations of circuit analysis so that the waveforms encountered can be analysed and understood with simple on-the-spot calculations. In the case of the transistor-switching experiment, the switching speed of the power MOSFET is slowed down so that the detail of its switching waveforms can easily be seen by timebase expansion on a relatively inexpensive digital storage oscilloscope.

	COMPUTER-AIDED EDUCATION OF POWER ELECTRONICS By N. Mohan; W. P. Robbins; T. M. Undeland	[View] [Download]
Abstract: There is a growing need for the use of circuit simulation programs in power electronics education. This paper considers this need and the difficulties that must be overcome in order to use simulation programs in an educational setting. The strengths and weaknesses of several simulation programs are considered from an educational use viewpoint. A novel approach to the use of simulation in power electronics courses is suggested by means of examples.

	TRANSIENT STUDY OF A SINGLE-PHASE PULSE CONVERTER (SPPC) WITH A VSI-IM TRACTION DRIVE LOAD By B. Yang; H. Zelaya-de la Parra; J. A. Taufiq	[View] [Download]
Abstract: Pulse converters, also known as four-quadrant converters, have the capability of transmitting power bidirectionally and achieving near unity power factor with a nearly sinusoidal input current waveform. They are ideal front end power conversion devices for inverter fed traction drive systems. This paper presents the implementation of the control schemes for the SPPC system, namely the voltage vector control (VVC) scheme and the direct current control (DCC) scheme. In order to provide a realistic load for the SPPC system, a VSI fed IM drive system is included in a full scale traction drive system simulator. System transient analysis methods are generalized and outlined. Transient tests under various system disturbances are carried out comparatively for the two schemes in order to compare the relative performance. It can be concluded from the study that, from the control viewpoint, the DCC scheme presents some advantages over the VVC scheme.

	TEACHING FIELD ORIENTED CONTROL OF VSI AND CSI FED ASYNCHRONOUS AND PERMANENT MAGNET SYNCHRONOUS MACHINES USING A PROGRAMMABLE HIGH SPEED CONTROLLER By R. G. Harley; M. T. Wishart; G. Diana	[View] [Download]
Abstract: This paper describes a structured and coherent system for the teaching of Field oriented control (FOC) to graduate students and engineers in industry. The system consists of a learning stage and an implementation stage. During the learning stage, the engineer is taught the fundamentals of FOC via the block diagram form of the machine equations in an easy-to-follow step-by-step manner. He then learns how to design controllers to implement FOC, and conducts simulations of his system using high-level simulation packages. ln the second stage he implements his design on a programmable high speed controller. This controller is easy to program, and allows the engineer to concentrate on the control issues involved, and to not get bogged down in microprocessor issues. Using this educational system, the time involved for the whole process typically takes less than six months. This includes undestanding of the theory, the development of computer simulations, the design of the controllers, and the full documentation of the project.