9818246820

Zeszyły Problemowe - Maszyny Elektryczne Nr 86/2010

In the first supply variant motor's average winding roltage is controlled via pulse width modulation of supply voltage (this is done by electronic commutator).

In the second supply variant the system is supplemcnted with powcr electronics comerter. decreasing electronic commutator supply voltage. so that the commutator is controlled on the basis of rotor position sensors only (with no pulse width modulation). The possibility of decreasing supply voltage (average value) of the BLDC motor allows smooth regulation of motor speed.

Andrzej Rusek, Andrzej Popenda, Janusz Flasza

Politechnika Częstochowska, Częstochowa

Piotr Dziubałtowski, ZM Elektro Sp. z o.o., Katowice

POPRAWA EFEKTYWNOŚCI ENERGETYCZNEJ POMP WODY SIECIOWEJ EC TYCHY SA - ANALIZA PROBLEMU

THE IMPROVING ENERGY EFFICIENCY OF PUMPS WATER NETWORK EC TYCHY SA - ANALYSIS OF PROBLEM

Abstract: In this study analyzed the comparative two variants of the water transport system: the system used at present. and a redesigned layout for the EC Tychy SA. Through analysis of the problem shown main direc-tions of modemization in the two sets of puinps Online PS3. PS4. PS5. PS6 and PS7. and two additional pumps PS8 and PS9.

Janusz Flasza

Politechnika Częstochowska, Częstochowa

ZAGADNIENIE OSZCZĘDNOŚCI ENERGII W SILNIKACH ELEKTRYCZNYCH W ASPEKCIE KLASYFIKACJI IE

THE QUESTION OF AUSTERITY OF ENERGY IN ELECTRIC ENGINES IN ASPECT OF CLASSIFICATION IE

Abstract: Morę than half of all electricity produced worldwide is used for electric drives with electric motors. Currently, the model faces the problem of energy modemization. Associated with the rational use in the application of innovative technology. This technolog}^- also includes the EE - energy-efficient, as one of the industries. Due to the high energy consumption and widely used in asynchronous altemating current engines devoted much im estment and research in order to inerease and improve their performance, taking into account their development, setting standards. Continue and new initiatives are legislative and other measures conceming issues of energy savings for induction motors.

Wojciech Figna, Krzysztof Pieńkowski Politechnika Wrocławska, Wrocław

STEROWANIE WEKTOROWE SILNIKIEM INDUKCYJNYM Z DWOMA UZWOJENIAMI STOJANA