Angela IAGĂR


29-64 COMANDA UNUI SEMAFOR CU TREI CULORI ȘI STARE DE AVARIE FOLOSIND AUTOMATUL PROGRAMABIL ZELIO SCHNEIDER ELECTRIC

CONTROL OF TRAFFIC LIGHT WITH THREE COLOURS AND
HAZARD’S STATE USING PLC ZELIO SCHNEIDER ELECTRIC
This paper presents an application made to control of traffic lights with
three colors and hazard’s state simulated and implemented using ZelioSoft 2.
Also, program has been tested on laboratory bench comprising: a power source
model THF45US24, a PLC Telemecanique Zelio SR3 B261BD type with 24VDC
power supply, and Schenck simulation module with 2 analog inputs, 8 digital
inputs, and 8 relay outputs.
Keywords: wired logic, programmable logic PLC, language FBD
Cuvinte cheie: logică cablată, logică programată, PLC, limbaj FBD

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29-62 EFICIENȚA DE COLECTARE A ELECTROFILTRELOR INDUSTRIALE ÎN FUNCȚIE DE STRATURILE DE PRAF DE PE SUPRAFEȚELE COLECTOARE partea a II-a

COLLECTION EFFICIENCY OF INDUSTRIAL
PRECIPITATORS DEPENDING ON POWDER LAYERS
ON COLLECTING SURFACES – Part II
When treating large gas flows, industrial precipitators are the most
common in the industry. For a precipitator with three sections (from a thermal
power plant), the article presents, through simulation (based on real electrical
and technological parameters of a precipitator) collection efficiency,
penetration of dust particles and migration’s velocity depending on thickness of
powder layers on collecting surface.
Keywords: electrostatic precipitators, dust, speed migration, collection
efficiency
Cuvinte cheie: electrofiltre, particule de praf, viteza de migrație, eficiența
de colectare

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29-61 EFICIENȚA DE COLECTARE A ELECTROFILTRELOR INDUSTRIALE ÎN FUNCȚIE DE STRATURILE DE PRAF DE PE SUPRAFEȚELE COLECTOARE partea I-a

COLLECTION EFFICIENCY OF INDUSTRIAL
PRECIPITATORS DEPENDING ON POWDER LAYERS
ON COLLECTING SURFACES – Part I
When treating large gas flows, industrial precipitators are the most
common in the industry. For a precipitator with three sections (from a thermal
power plant), the article presents, through simulation (based on real electrical
and technological parameters of a precipitator) collection efficiency, penetration
of dust particles and migration’s velocity depending on thickness of powder
layers on collecting surface.
Keywords: electrostatic precipitators, dust, speed migration, collection
efficiency
Cuvinte cheie: electrofiltre, particule de praf, viteza de migrație, eficiența
de colectare

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29-60 CIRCUITE LOGICE DE BAZĂ CU STRUCTURĂ VARIABILĂ REALIZATE CU PORŢI ŞI-NU, SAU-NU ŞI SAU-EXCLUSIV, EXPERIMENTATE PE AP PS3

BASIC LOGIC CIRCUITS WITH VARIABLE STRUCTURE
MADE WITH NAND, NOR AND XOR GATES ON PS3 PLC
The paper presents the basic logic circuits made with integrated variable
structure NAND, NOR and XOR. The logical structure and function of these
circuits is changed by means of changeover switches which changes the logic
value of a signal at the input of XOR gates. In this way change the logic circuit
function with variable structure. Were performed experiments on the PS 3 PLC
(Klöckner-Moeller).
Keywords: logic circuits, AND – NOT gate, NOR gate, OR gate weeks
are exclusively allocated
Cuvinte cheie: circuite logice, poartă ȘI-NU, poartă SAU-NU, poartă
SAU -EXCLUSIV

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29-47 ANALIZA REGIMURILOR TERMICE ALE UNUI HIDROGENERATOR

ANALYSIS OF A HYDRO GENERATOR THERMAL REGIMES
The paper analyses the thermal regimes of a vertical synchronous hydro
generator, coupled with a Kaplan hydraulic turbine, depending on its active and
reactive powers. Operation at temperatures higher than permissible limits leads
to defects and abnormal functioning of hydro generator. The optimal
temperature increases stability and extends the lifetime of hydro generator, by
slowing aging of the rotor and stator windings.
Keywords: hydro, monitoring, temperature
Cuvinte cheie: hidrogenerator, monitorizare, regim termic

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