Conference Proceeding

Digital vector control algorithm for induction motor torque drive

Inst. of Control Sci., Acad. of Sci., Moscow, Russia
12/2002; DOI:10.1109/IECON.2002.1185408 ISBN: 0-7803-7474-6 pp.996 - 1001 vol.2 In proceeding of: IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the], Volume: 2
Source: IEEE Xplore

ABSTRACT High quality precision digital vector control for standard AC drive (induction motor, voltage source inverter, current and speed sensors (or mechanical variable observer)), microprocessor-based controller is described. The synthesis of control algorithm is based on using exact (analytical) discrete model; digital, independent estimation of unmeasured variables; decomposition of vector control on two independent scalar controls of the field current and torque one; using discrete sliding modes control or asymptotic control; using variables predictor on a step of calculations for compensation of delay caused by calculation time of the controller; using optimal vector PWM for reduction of switching losses. The simulation has confirmed essential increase of dynamic accuracy, simplification of algorithm of digital control, reduction of the requirements to computing capacity of the controller.

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    Article: Remote Control for the Oil Drowned Pump
    Sergey Ryvkin, Dmitry Izosimov, Alexey Sarychev, Lev Raskin, Denis Aksarin
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    ABSTRACT: The work is intended to explain the basic ideas related to design of digital remote control system for the oil-drowned pump. The control system must allow the pump operating very reliably under heavy conditions. The digital control system has a hierarchy local-distribute structure. The upper level is a ground control. The low level is a local-distribute control system, which has four drive controls. With the aim to reduce the cost of the drive and to increase reliability the sensorless pump drive is designed. Original observation algorithms of both position and rotational velocity for exterior permanent magnet synchronous motors are designed. The system simulation has confirmed high dynamic accuracy and in addition simplification of algorithm of digital control, reduction of the requirements to computing capacity of the controller.
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Keywords

algorithm
 
calculation time
 
calculations
 
control algorithm
 
discrete
 
dynamic accuracy
 
essential increase
 
field current
 
independent estimation
 
independent scalar controls
 
induction motor
 
mechanical variable observer
 
optimal vector PWM
 
quality precision digital vector control
 
requirements
 
speed sensors
 
standard AC drive
 
variables predictor
 
vector control
 
voltage source inverter