Green energy expert Member of LUKA & BRAMER GROUP, a. s. located - - PowerPoint PPT Presentation

Green energy expert

• Member of LUKA & BRAMER GROUP, a. s. located in Brno
• Focus
• supply of technologies for utilization and waste processing
• supply and service of technologies within the energy sector
• supply and service of technological units for energy savings in households and

industry

• research and development of depolymerisation and gasification technologies
• Provides
• experienced team of engineers with years of experience in the field
• unique solution for each technological unit

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Electric power quality control

suppressing unwanted effects from the electricity supply

Electric power economy management

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Unwanted effects from the electricity supply

• 1. Overvoltage and undervoltage in the power supply network
• The normalised voltage in CZ and the EU is 230 V +/- 10% (207-253 V)
• Most appliances are produced for voltages of 220-230 V
• Overvoltage, undervoltage, frequent voltage fluctuations => unwanted

effect on function, consumption, and the life of the appliance

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Unwanted effects from the electricity supply

• 2. Phase voltage asymmetry
• The voltage on each phase often differs by more than 5 V
• Motors => incapable of smooth motion = performance degradation =>
• ffset by higher current
• Consequence => conversion of electricity into mechanical rotational

movement is asymmetrical => adverse effects on the function, life, and consumption of electrical appliances

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Unwanted effects from the electricity supply

• 3. Low Power Factor (PF)
• Caused by electric motors, and the quality of supplied electricity
• Motor=> tendency to produce electricity, but also produces reactive power!
• Reactive power => electricity converted into thermal energy in the work place
• Consequence: overheating of conductors, reduced equipment life, increase

in electricity consumption

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Unwanted effects from the electricity supply

• 4. Harmonic distortion
• Occurs due to the load, which distorts the sinusoidal current
• This load is caused by e.g. computers, UPS, frequency converters ...
• There is an increase of higher harmonics 3, 5, 7, 9, 11
• Overloading neutral conductors
• Negative impact on the life of appliances

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Unwanted effects from the electricity supply

• 5. Micro network outages
• Usually last a few tens to hundreds of ms
• They are caused by external disturbances

in distribution systems;

• Cause problems in manufacturing processes for energy-sensitive devices,

such as CNC centres, special manufacturing equipment, servers, technological processing lines

• Reduced production on manufacturing lines => higher error rates and scrap

production

• Negative impact on the life of appliances

250 200 150 100 50 10 20 30 40 50 60 70 80 Voltage [V] Time [ms]

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Electric power quality control

Portfolio of products

• Energy Savers
• Active UPS
• Static voltage stabilisers
• Power factor correction
• Harmonic distortion filters
• Backup DC power source
• Backup AC power source
• Single and three-phase transformers

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Description of the main components of e-cont units

• Transformer– isolation transformers with multiple branching to increase

and decrease the voltage, also acts as a passive harmonic filter.

• Thyristor control – consists of several thyristors (power semiconductor

elements) and the control unit switches between the transformer branching, controls the output voltage of the device +/- 1% as needed.

• Real time compensation– reacts to changes in the network in a matter of

5-20 ms. Can increase the power factor up to cos φ 0.99.

• Active harmonic filter – reduces total harmonic distortion for the range of

2nd to 25th harmonics, or to a harmonic target.

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Energy Saver

• Each unit is made to measure, according to the type of load, from 16 A to 4.545 A
• Optimizes the operating voltage to the desired value, depending on consumption

(kWh) +/- 1% at each stage, stabilizes overvoltage and undervoltage

• Reduces losses during power transmission
• Filters distortion harmonic and interharmonic

frequencies to the minimum level

• Reduces reactive power (kVAr) to the minimum level
• Removes transient surges and flickering fluctuations
• f voltage in the consumer’s network
• Automatically compensates the power factor

in real-time to 0.95 to 0.99 cos φ

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Energy Saver and the components used

• Network analyser
• Terminal block inputs and outputs
• Circuit breaker at the input to the Energy Saver
• Circuit breaker at the output from the Energy Saver
• Manual Bypass Switch and Saving Mode
• Automatic Bypass during breakdowns of the Energy Saver
• Thyristor control
• Active harmonic filter
• Power factor correction
• Main and auxiliary transformers
• Energy Saver controller

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Suppressing unwanted effects of the electricity supply

• Low power factor
• Harmonic distortion
• Transients in the network

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Suppressing unwanted effects of the electricity supply

• Overvoltage
• Phase voltage asymmetry

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Energy Saver – electricity savings

Amount of energy savings depends on the type of load

• Motor load

6 – 12 %

• Combined load

8 – 18 %

• Lighting load

10 – 22 % Energy savings also lead to reduced CO2 production Technology life of more than 20 years

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Active UPS

• Active backup power supply
• Protection against micro grid outages
• Delivers continuously regulated, constant voltage and

frequency for the safe use of electrical devices

• Solutions for protecting computer systems, servers,

network terminals, CNC machining centres, specialised production equipment, process lines

• Reliably provides AC power for very sensitive devices

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Active UPS

• Internal voltage and frequency circuits provide protection against voltage

and frequency degeneracy in the network

• Rectifier on the input and output isolation transformer protects against

failure of the network

• UPS operates continuously through the rectifier, battery, and inverter
• Fluctuation of the network voltage does not affect the output voltage
• The output frequency corresponds to the network

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Active UPS specifications

• Single-phase input - single phase output in the range of 2-15 kVA
• Three phase input – single phase output, ranging from 10 to 40 kVA
• Three phase input- three phase output, ranging from 10 to 200 kVA
• Fuse/circuit breaker at the input, output, and battery
• Protection against overheating, overload, short circuit, overvoltage

and undervoltage, low battery

• On / Off switch and a manual by-pass in case of failure or

maintenance

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Static voltage stabiliser

• Protection against dangerous electrical voltage changes
• Device for monitoring, protection, and control of voltages,

microprocessor controlled

• Setting the correct voltage value you require, as desired by

numerous sensitive industrial equipment

• Continuous supply of stable and secure energy
• Captures voltage drops and increases in the order
• f 0.02 seconds in the voltage range from -60% to +40%
• Rate fluctuation correction of 500 V/s

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Static voltage stabiliser

• The equipment includes: protection against overvoltage and undervoltage,
• vertemperature, overload, short circuit, and phase break
• Manual by-pass for the transfer of the load directly from the mains voltage
• Thermomagnetic fuses on input and output of the units
• Single-phase and three-phase outputs from 2 kVA to 3,200 kVA (up to 4.000 A)
• Units for high-load, from 800 kVA to 12,000 kVA (up to 16.000 A)
• All industrial voltage values: 230, 380, 400, 415, 480, 600 V
• Very wide range of input voltage ranges

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Static voltage stabiliser

• Maintenance-free technology controlled

by microprocessor

• High efficiency: up to 97%
• Remote access software Ssupport
• Overvoltage protection, sudden voltage

rises and flashes

• Control unit with LCD display

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e-cont unit installation options

Lighting

• Public lighting, production halls, sports halls, stadiums, car parks, airports,

roads and communications Industrial sector

• Industrial concerns, production plants, foodstuff producers, chemical

plants, CNC machines, petrol stations Public sector

• State administration buildings, town council offices, schools, kindergartens

and nurseries, cultural and sports centres, hospitals Travel and tourism

• Hotels, guest houses, restaurants, cafés and coffeeshops, cake shops

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e-cont unit installation options

Agriculture

• Biogas stations, farming co-operatives,

styes, stables, poultry farms Commercial areas

• Wellness centres, aquaparks

shopping centres Homes

• Houses, apartments,

developer’s projects

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Design process for e-cont units solutions

• Detailed analysis of electricity at the installation site with a certified device
• Analysis evaluation => choice of components
• Creating quotations
• e-cont unit assembled to order
• Installation of the main/sub distribution

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References for projects that our team worked on

• Přerov technical services
• Olomouc technical services
• Uherské Hradiště town
• Přerov town
• Petřvald town
• Otrokovice town
• Kroměříž town
• Prostějov town
• Fa Rene Mercedes Benz
• Bio-gas station Smolotely
• Vsetín funeral hall
• R-Hotels
• Combin
• Tizzi
• DHL supply chain
• Ball Aerocan
• Motorest Samota

and others …

Thank you for your attention

LBG Moravia, a.s. Šmahova 1244/112 627 00, Brno Czech Republic www.lbgmoravia.cz +420 513 036 350 info@lbgmoravia.cz