future trends the transformerless ups

7/17/2019 Future Trends the Transformerless UPS

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Schneider Electric ITB

Future Trends : The Transformerless UPS

Presented by

Yam Hong - Asean Business Development

[email protected] : 6324 6588

[email protected]

10 Ang Mo Kio Street 65,

#03-06/10 Techpoint Building

Singapore, Singapore 569059



Schneider Electric 2

Agenda●Market Drivers for UPS Solutions

●Current and future trends of UPS Technology

●Transformerless UPS attributes

●Advantages of Transformerless UPS design

●Transformer based UPS Vs Tranformerless UPS

●Capex, Opex and Installation costs savings

●The new Galaxy 300 UPS




Market drivers of UPS SolutionsTCO – Capex & Opex

Flexibility – Scalability,footprint Electrical Performance –

Eff, Thdi, pf




UPS : Current Technology●Double-Bridge Converter regulates

by controlling firing angle of SCRs

● Anti-Harmonics filter (AHF) needed to

achieve < 5% THDi (IEEE 519 Stds)

● Both rectifier / inverter operating in

“Buck” mode thus transformer

needed to step-up voltage

Transformer needed to step-upvoltage

Harmonics Current Reinjection

(THDi) Upstream

AHF




UPS : Current Technology

12-Pulse Current Waveform

6-Pulse Current Waveform

Output Transformer

Input Phase Shift

Transformer




PFC Charger : Input Characteristics

800 Vdc Bus

Buck-Boost Converter

Low Harmonics Reinjection

& pf = 1




Natural shift to transformerless topology

with UPS systems still providing high qualitypower to loads● IGBT bipolar transistors enable voltage control

& very short switching (nanoseconds from10%-90% of threshold) in compact size

●MGE uses 5th generation “Sixpack” IGBTs –

containing 1000s of transistor cells; mostcompact & integrated to date

●Low to medium power devices can operate at16kHz with output efficiencies > 90%.

●For higher power equipment, frequency limitedto reach efficiencies ≤94%.

Dualpack:

3 packages of 2 IGBT

Sixpack: 6 IGBTs withintegrated temperature

sensor




Heat Pipes Technology




Advantages of transformerless UPS:

Mechanical

●High Density transistors/device means newest IGBT’s offer

extremely compact form factor compared to early controldevices

●No transformer enables to reduce weight and size

●Enables smaller package overall

1000 mm 700 mm




Advantages of transformerless UPS:

Performance●Greater regulation flexibility accommodates wider range of input

voltages.

●

Improved electro-magnetic compatibility (EMI)● Improves compliance with Generator set :

● limits input current at Generator start-up

● Input power factor close to 1 :

●No reactive power or capacitive current

●smaller sizing for genset

●Combination of transformerless designs with IGBT technology &latest output filters achieves industry’s highest efficiency

●UPS battery isolated from DC bus thanks to independent charger – protecting battery from non-linear load disturbances

=1




Transformerless UPS reliability

●Direct thermal IGBT control resultsfrom integrated temperature sensors

placed directly in rectifier & inverter

bases

● If fault is detected, UPS sets-off alarm

and can switch to bypass inputwithout interruption

●Significantly reduced componentcount & integrated control cardeliminates numerous cables and

connections that can cause faults

Doc. Semikron

IntegratedTemperaturesensor




New Transformerless 3-Phase Designs

Offer Many Advantages – so what?

Improved performance

Minimize components count

Little or no electromagneticinterference

Minimized footprint / weight

Easy neutral grounding

MGE: among the first UPSmanufacturers to design

transformerless system




Transformerless UPS – OPEX Savings & ROI

Table: Unitary UPS at full load with output PF = 0.8:

Efficiency

MGEG7K

90-NET

Energysavings1 year

Energy

savings5 years

250 kVA / 200 kW 93.8% 92.0% 2 920 € 14 600€300 kVA / 240 kW 93.9% 92.5% 2 710 € 13 550 €

400 kVA / 320 kW 93.7% 92.5% 3 100 € 15 500 €

500 kVA / 400 kW 94.0% 92.5% 4 840 € 24 200 €

Table: Unitary UPS at 50% load with output PF = 0.8:

EfficiencyMGEG7K

90-NET

Energysavings1 year

Energysavings5 years

250 kVA / 100 kW 93.0% 91.5% 1 240 € 6 200 €

300 kVA / 120 kW 94.2% 92.0% 2 130 € 10 650 €

400 kVA / 160 kW 94.0% 92.0% 2 590 € 12 950 €

500 kVA / 200 kW 94.0% 92.0% 3 240 € 16 200 €

Note : The OPEX increases significantly with parallel installation.Additional savings in cooling energy not factored in above calculations.

Formula:Annual energy saving = Pu x (1/ηc - 1/ηSchneider) x H x C

Pu = kW at UPS outputηc = 90-NET efficiencyηSchneider = Galaxy 7000 efficiencyH = number of hours in 1 year(8760 hours)C = kWh price = 0.08 €

R

O I i n 5

Y e a r s !




Transformerless UPS - Lower Capex & Installation Costs

Low input current for right sizing of the different components of the installation

Thanks to IGBT Charger, MGE Galaxy 7000 has lower input current

A high input current has an impact on the dimensioning of the equipment in the electric

installation:

Cable over-sizing,

Genset over-sizing, Transformer over-sizing,

Circuit-breaker over-sizing.

Example for cable. The table below shows the cable size recommended by Chloride and

Schneider:

MGE Galaxy 7000 90-NET

250 kVA 1 x 150 mm² 2 x 120 mm²

300 kVA 1 x 240 mm² 2 x 180 mm²

400 kVA 2 x 150 mm² 2 x 240 mm²

500 kVA 2 x 240 mm² 5 x 120 mm²

L o w e r

C a p e x

o f u p t o 3 0

%




Transformerless UPS – Smaller Footprint & Less Weight

UPS footprint without battery:

MGE Galaxy

700090-NET

Delta

G7K / 90-NET

250 kVA 1.20 m² 1.39 m² 1.08

300 kVA 1.20 m² 1.39 m² 1.08

400 kVA 1.20 m² 1.39 m² 1.08

500 kVA 1.54 m² 1.73 m² 1.12

Larger footprint Waste of space

Power density:

MGE Galaxy

700090-NET

Delta

G7K / 90-NET

250 kVA 187 kW/m² 144 kW/m² 1.30

300 kVA 225 kW/m² 173 kW/m² 1.30

400 kVA 300 kW/m² 230 kW/m² 1.30

500 kVA 292 kW/m² 231 kW/m² 1.26

For MGE Galaxy 7000, more kW in the same footprint

Weight:

MGE Galaxy7000

90-NET DeltaG7K / 90-NET

250 kVA 960 kg 1860 kg 1.94

300 kVA 960 kg 1860 kg 1.94

400 kVA 1100 kg 2095 kg 1.90

500 kVA 1470 kg 2495 kg 1.70 1 r a c k s

p a c e = S

$ 2 K / m

o n t h




25kW50kW75kW100kW125kW150kW175kW200kW225kW250kW275kW300kW325kW350kW375kW400kW425kW450kW475kW500kW of High-Efficiency Scalable Power Protection

Symmetra® PX - Ultra Hi-Efficiency UPS

E f f i c i e n c y

u p t o

9 6 % !




60 ies 70 ies 80 ies 90 ies 2000

Proven & Unmatched45 years of experience

MG 60

EPS2000

PW

Alpes 4000Alpes 3000

●8th generation of

three-phase UPS

Galaxy 7000

G 6000

Silcon

G5000

SUVT

SYMW

SYPX




Introducing the new MGE

Galaxy 300

“Simplicity you can trust”

Effective 3-Phase Power protection against downtime and Data loss




MGE Galaxy 300 Applications

Commercial buildings Facilities Banks Hotels

400V (10-40 kVA 3:3) and (10-30 kVA 3:1)

Small IT environments Data storage equipment Network equipment

Computer room equipment

Industrial environments Manufacturing equipment Control automation

Telecom Wireless communication Mobile and fixed telephone

infrastructure Radio and TV broadcasting

MGE Galaxy 300}




3:3 and 3:1 UPS

Two enclosure sizes from 10kVA to 40kVA

Parallel redundant capable (up to 2)

Double conversion on-line

Input power factor correction: >0.98 at load >50%

Output power factor 0.8

Built-in batteries

Voltage Tolerance : +/- 20%, (340 – 477V) full load

Frequency Tolerance : 45 – 65Hz

Efficiency : up to 93% @ full load

Input ITHD < 7% at full load

Output VTHD < 2% linear, < 5% non-linear

Overload capacity

125% for 2 minutes

150% for 60 seconds

1000% 500ms in bypass mode

UPS classification VFI-SS-112

Narrow enclosure400mm Width

Wide enclosure500mm Width

Available sizes10kVA, 15kVA,20kVA (3:3)

Available sizes20kVA (3:1),30kVA, 40kVA

MGE Galaxy 300

Specifications summary




● Optimized footprint - narrow tower or wide tower depending on load requirements

● Double conversion on line topology guarantees consistently high level of power quality and availabilitywith permanently corrected power and instant transfer time

● Parallel capability up to 2 units for redundancy

● Fast charging capability reduces battery recharge time, and protects battery against damage caused

by deep discharge● Full integrated bypass and simple interface with step-by-step wizards for setup or maintenance● Low cost of acquisition designed to provide an optimized price/performance ratio, with a number of

features carefully selected to optimize both performance and cost level

MGE Galaxy 300

SummaryEffective three phase power protection against downtime and

data loss for mission critical applications

“Simplicity you can trust”




Transformerless : UPS of the Future




Conclusion

●Transformerless UPS systems from Schneider offer these advantages:

●Highest efficiency for lower cost of operation

●Adaptation to all distributed network types over a wide voltage range

●Enhanced compatibility with generator sets

●Exceptional output performance whatever the load type – including newgeneration non-linear capacitive loads

●A compact size that easily fits into a variety of customer’s infrastructures.




Helping people to makethe most of their energy

Thank you [email protected]




Compatible to ALL Architecture, Safety & Earthing Standards

CE / LCIECertification et marquageISO 14001 / ISO 9001Conception fabrication

CEI 61003-2 / CEI 61003-4Harmoniques

CEI 62040-2 : C3 distribution contrôlée en standard / C2 classe A enoptionCEM émission

CEI 61000-4-2 / EN 62040-2 niveau 4 (décharges électrostatiques : 15

KV air, 8 kV contact)CEI 61000-4-3 / EN 62040-3 niveau 3 (champs électro magnétiquesrayonnés : 10 V/m)CEI 61000-4-4 / EN 62040-2 niveau 4 (transitoires rapides : 4 kV surcâbles secteur)CEI 61000-4-5 / EN 62040-2 niveau 4 (onde de choc forte énergie : 2 kVcouplage entre lignesCEI 61000-4-6 / EN 62040-2 niveau 3 (immunité conduite : 10 Veff surcâbles secteur)CEI 61000-4-8 / EN 55024 niveau 4 (immunité rayonnée : 30 A/m)

CEM immunité

CEI 62040-3 / EN 62040-3Performances et topologie

CEI 62040 1-2 / CEI 60950Construction et sécurité

Normes




It is forbiden to ground the neutral WITHOUT total galvanic isolation : theneutral cannot have 2 different references to earth.

Then, we need to implement an AC

by-Pass transformer. Its neutral is

connected to the inverter transformerneutral, both being grounded to aunique earth.

How to ground the neutral at the output of the UPS ?

to reduce the potential between neutral andground)

Transformer Vs tranformerless designPhenomena at the UPS level

Phenomena Transformer topology




Phenomena

With a unique output transformer, there is a total galvanic isolation and the neutral can be grounded.

Conclusion : same methodology needed as with transformer based UPS : add 1 transformer

....

(1)

...

How to ground the neutral at the output of the UPS ?

to reduce the potential between neutral andground)

Transformer Vs tranformerless design

Phenomena at the UPS level

Transformerless topology

future trends the transformerless ups

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