Speed Controllers

EBook Description: The purpose of a motor speed controller is to take a signal representing the demanded speed, and to drive a motor at that speed. The controller may or may not actually measure the speed of the motor.

The principle of vector control of electrical drives is based on the control of both the magnitude and the phase of each phase current and voltage. For
as long as this type of control considers the three phase system as three independent systems the control will remain analog and thus present several drawbacks.

Basic AC Drives (PDF 20p)

AC drives, inverters, and
adjustable frequency drives are all
terms that are used to refer to equipment designed to control the speed of an AC motor. The term SIMOVERT is used by Siemens to identify a SIemens MOtor inVERTer (AC drive).

Sidac application note (PDF 40p)

CPE is defined as any telephone terminal equipment which resides at the customer�s site and is connected to the Public Switched Telephone Network (PSTN). Telephones,modems, caller ID adjunct boxes, PBXs, and answering machines are all considered CPE.

OPERATION OF A 3 PHASE FULLY CONTROLLED RECTIFIER

Notes on OPERATION OF A 3 PHASE FULLY CONTROLLED RECTIFIER.

STEPPER MOTOR REFERENCE DESIGN (PDF 36p)

Stepper motors are used in a wide variety of applications. They are prevalent in consumer office equipment such as printers, plotters, copiers, and scanners.

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