EPE Association: EPE 1987 - 25 - Lecture Session 3.7: SYNCHRONOUS MOTOR DRIVES

EPE 1987 - 25 - Lecture Session 3.7: SYNCHRONOUS MOTOR DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 25 - Lecture Session 3.7: SYNCHRONOUS MOTOR DRIVES

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   Study and comparison of different algorithms for fast direct digital regulations of currents loops for a self synchronous servomotor with permanent magnet
By Claude Bergmann; Jean-Paul Louis [View]
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Abstract: The paper deals with some critical problems associated with fast direct digital control of current loops; choice of the sampling period with the regulator's type. The effect of the calculus duration is taken into consideration on the comparison of the different strategies. Experimental results are presented.

   ON THE BEHAVIOUR OF A CURRENT FED SYNCHRONOUS MACHINE DRIVE WITHOUT DC-LINK INDUCTANCE
By J. CH. Bendien; J. Geuenich [View]
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Abstract: A drive system with synchronous machine and machine-commutated thyristor-inverter is discussed. The current source of this type of drive is realized by a fast switching transistor chopper while current is smoothed by the machine reactance and not as usual, by a choke in the dc-link. It is shown, that operation without link inductance affects the margin angle of the inverter. Hence, the reactive power of the machine have to be increased considerably. To overcome this disadvantage a special method of control is presented, investigated and verified by experimental results.

   HIGH PERFORMANCE INVERTER FOR BRUSHLESS SERVO MOTORS
By C. K. Patni [View]
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Abstract: An extraordinarily robust and compact bridge-leg design is presented. It is a building block for an inverter operating a three phase brushless permanent magnet velocity servo drive. The design can also be adopted for switch-mode power supply (SMPS) applications. It is capable of switching 800V and 20A nominal at a switching frequency in excess of 20kHz without snubbers. Protection against short-circuit of the output to ground and output to high voltage D.C. are incorporated. Switching, conduction and drive losses are minimized resulting in a high power to volume equipment. It utilizes transistors with a new cellular bipolar technology called the ETD. The cholce of the power device is justified by considering numerous device technologies and concepts for high voltage and high power applications.

   AN EFFICIENT DIGITAL CONTROLLER FOR SELF SYNCHRONOUS MOTOR DRIVES
By H. G. Hamed; A. M. Sharaf [View]
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Abstract: The paper presents the development of a microcomputer based multivariable linear controller for the current source inverter fed autosynchronous motor drive. The power factor and speed feedback controllers ensure fast dynamics, disturbance rejection and robustness beside providing good energy / power utilization.

EPE 1987 - 25 - Lecture Session 3.7: SYNCHRONOUS MOTOR DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 25 - Lecture Session 3.7: SYNCHRONOUS MOTOR DRIVES
	[return to parent folder]

	Study and comparison of different algorithms for fast direct digital regulations of currents loops for a self synchronous servomotor with permanent magnet By Claude Bergmann; Jean-Paul Louis	[View] [Download]
Abstract: The paper deals with some critical problems associated with fast direct digital control of current loops; choice of the sampling period with the regulator's type. The effect of the calculus duration is taken into consideration on the comparison of the different strategies. Experimental results are presented.

	ON THE BEHAVIOUR OF A CURRENT FED SYNCHRONOUS MACHINE DRIVE WITHOUT DC-LINK INDUCTANCE By J. CH. Bendien; J. Geuenich	[View] [Download]
Abstract: A drive system with synchronous machine and machine-commutated thyristor-inverter is discussed. The current source of this type of drive is realized by a fast switching transistor chopper while current is smoothed by the machine reactance and not as usual, by a choke in the dc-link. It is shown, that operation without link inductance affects the margin angle of the inverter. Hence, the reactive power of the machine have to be increased considerably. To overcome this disadvantage a special method of control is presented, investigated and verified by experimental results.

	HIGH PERFORMANCE INVERTER FOR BRUSHLESS SERVO MOTORS By C. K. Patni	[View] [Download]
Abstract: An extraordinarily robust and compact bridge-leg design is presented. It is a building block for an inverter operating a three phase brushless permanent magnet velocity servo drive. The design can also be adopted for switch-mode power supply (SMPS) applications. It is capable of switching 800V and 20A nominal at a switching frequency in excess of 20kHz without snubbers. Protection against short-circuit of the output to ground and output to high voltage D.C. are incorporated. Switching, conduction and drive losses are minimized resulting in a high power to volume equipment. It utilizes transistors with a new cellular bipolar technology called the ETD. The cholce of the power device is justified by considering numerous device technologies and concepts for high voltage and high power applications.

	AN EFFICIENT DIGITAL CONTROLLER FOR SELF SYNCHRONOUS MOTOR DRIVES By H. G. Hamed; A. M. Sharaf	[View] [Download]
Abstract: The paper presents the development of a microcomputer based multivariable linear controller for the current source inverter fed autosynchronous motor drive. The power factor and speed feedback controllers ensure fast dynamics, disturbance rejection and robustness beside providing good energy / power utilization.