Schneider Electric ITB Future Trends : The Transformerless UPS Presented by Yam Hong - Asean Business Development

[email protected] Phone : 6324 6588 [email protected] 10 Ang Mo Kio Street 65, #03-06/10 Techpoint Building Singapore, Singapore 569059

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 Schneider Electric

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Market drivers of UPS Solutions TCO – Capex & Opex

Electrical Performance – Eff, Thdi, pf Schneider Electric

Flexibility – Scalability, footprint 3

UPS : Current Technology Harmonics Current Reinjection (THDi) Upstream

● Double-Bridge Converter regulates by controlling firing angle of SCRs

AHF

● 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-up voltage

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UPS : Current Technology

Input Phase Shift 12-Pulse Current Waveform

Transformer

Output Transformer

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6-Pulse Current Waveform 5

PFC Charger : Input Characteristics Low Harmonics Reinjection & pf = 1

800 Vdc Bus

Buck-Boost Converter

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Natural shift to transformerless topology with UPS systems still providing high quality power to loads ● IGBT bipolar transistors enable voltage control & very short switching (nanoseconds from 10%-90% of threshold) in compact size Dualpack:

● MGE uses 5th generation “Sixpack” IGBTs – containing 1000s of transistor cells; most compact & integrated to date

3 packages of 2 IGBT

● Low to medium power devices can operate at 16kHz with output efficiencies > 90%. ● For higher power equipment, frequency limited to reach efficiencies ≤94%.

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Sixpack: 6 IGBTs with integrated temperature sensor

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Heat Pipes Technology

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Advantages of transformerless UPS: Mechanical ● High Density transistors/device means newest IGBT’s offer extremely compact form factor compared to early control devices ● No transformer enables to reduce weight and size ● Enables smaller package overall

1000 mm Schneider Electric

700 mm 9

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 :

=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

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Transformerless UPS reliability ● Direct thermal IGBT control results from integrated temperature sensors placed directly in rectifier & inverter bases ● If fault is detected, UPS sets-off alarm and can switch to bypass input without interruption ● Significantly reduced component count & integrated control card eliminates numerous cables and connections that can cause faults

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Doc. Semikron

Integrated Temperature sensor

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New Transformerless 3-Phase Designs Offer Many Advantages – so what?
Improved performance
Minimize components count
Little or no electromagnetic interference
Minimized footprint / weight
Easy neutral grounding

MGE: among the first UPS manufacturers to design transformerless system

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Transformerless UPS – OPEX Savings & ROI Table: Unitary UPS at full load with output PF = 0.8:

250 300 400 500

kVA kVA kVA kVA

/ / / /

200 240 320 400

kW kW kW kW

Efficiency MGE 90G7K NET 93.8% 92.0% 93.9% 92.5% 93.7% 92.5% 94.0% 92.5%

Energy savings 1 year

Energy savings 5 years

2 920 € 2 710 € 3 100 € 4 840 €

14 600€ 13 550 € 15 500 € 24 200 €

Formula: Annual energy saving = Pu x (1/ηc - 1/ηSchneider) x H x C Pu = kW at UPS output ηc = 90-NET efficiency ηSchneider = Galaxy 7000 efficiency H = number of hours in 1 year (8760 hours) C = kWh price = 0.08 €

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

250 300 400 500

kVA kVA kVA kVA

/ / / /

100 120 160 200

kW kW kW kW

Efficiency MGE 90-NET G7K 93.0% 91.5% 94.2% 92.0% 94.0% 92.0% 94.0% 92.0%

Energy savings 1 year

Energy savings 5 years

1 240 € 2 130 € 2 590 € 3 240 €

6 200 € 10 650 € 12 950 € 16 200 €

in I RO

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

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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: 250 kVA 300 kVA 400 kVA 500 kVA

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MGE Galaxy 7000 1 x 150 mm² 1 x 240 mm² 2 x 150 mm² 2 x 240 mm²

90-NET 2 x 120 mm² 2 x 180 mm² 2 x 240 mm² 5 x 120 mm²

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Transformerless UPS – Smaller Footprint & Less Weight UPS footprint without battery:

250 300 400 500

kVA kVA kVA kVA

MGE Galaxy 7000 1.20 m² 1.20 m² 1.20 m² 1.54 m²

90-NET 1.39 1.39 1.39 1.73

m² m² m² m²

Delta G7K / 90-NET 1.08 1.08 1.08 1.12

Larger footprint
Waste of space

Power density:

250 300 400 500

kVA kVA kVA kVA

MGE Galaxy 7000 187 kW/m² 225 kW/m² 300 kW/m² 292 kW/m²

90-NET 144 173 230 231

kW/m² kW/m² kW/m² kW/m²

Delta G7K / 90-NET 1.30 1.30 1.30 1.26

For MGE Galaxy 7000, more kW in the same footprint

Weight:

250 300 400 500

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kVA kVA kVA kVA

MGE Galaxy 7000 960 kg 960 kg 1100 kg 1470 kg

90-NET 1860 1860 2095 2495

kg kg kg kg

1

Delta G7K / 90-NET 1.94 1.94 1.90 1.70

k c a r

ce a sp

$2 S =

K

th n o m /

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Symmetra® PX - Ultra Hi-Efficiency UPS 500kW of High-Efficiency 475kW 450kW 425kW 400kW 375kW 350kW 325kW 300kW 275kW 250kW 225kW 200kW 175kW 150kW 125kW 100kW 75kW 50kW 25kW Scalable Power Protection

f Ef

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c n e i ic

o t p u y

! % 96

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Proven & Unmatched 45 years of experience Silcon

SYPX SUVT

SYMW Galaxy 7000

●8th generation of three-phase UPS

G 6000 G5000

PW EPS 2000 Alpes 3000

Alpes 4000

MG 60

60ies Schneider Electric

70ies

80ies

90ies

2000 17

Introducing the new MGE Galaxy 300

Effective 3-Phase Power protection against downtime and Data loss “Simplicity you can trust”

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MGE Galaxy 300 Applications 400V (10-40 kVA 3:3) and (10-30 kVA 3:1)
Commercial buildings
Facilities
Banks
Hotels


Telecom


Wireless communication
Mobile and fixed telephone

infrastructure
Radio and TV broadcasting

MGESchneider Galaxy 300} Electric


Small IT environments


Data storage equipment
Network equipment
Computer room equipment


Industrial environments
Manufacturing equipment
Control automation

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MGE Galaxy 300 Specifications summary

















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

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Narrow enclosure 400mm Width

Available sizes 10kVA, 15kVA, 20kVA (3:3)

Wide enclosure 500mm Width

Available sizes 20kVA (3:1), 30kVA, 40kVA

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MGE Galaxy 300 Summary Effective three phase power protection against downtime and data loss for mission critical applications

● Optimized footprint - narrow tower or wide tower depending on load requirements ● Double conversion on line topology guarantees consistently high level of power quality and availability with 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

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“Simplicity you can trust”

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Transformerless : UPS of the Future

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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 new generation non-linear capacitive loads ● A compact size that easily fits into a variety of customer’s infrastructures.

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Helping people to make the most of their energy

Thank you [email protected]

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Compatible to ALL Architecture, Safety & Earthing Standards Normes Construction et sécurité

CEI 62040 1-2 / CEI 60950

Performances et topologie

CEI 62040-3 / EN 62040-3

CEM immunité

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 magnétiques rayonnés : 10 V/m) CEI 61000-4-4 / EN 62040-2 niveau 4 (transitoires rapides : 4 kV sur câbles secteur) CEI 61000-4-5 / EN 62040-2 niveau 4 (onde de choc forte énergie : 2 kV couplage entre lignes CEI 61000-4-6 / EN 62040-2 niveau 3 (immunité conduite : 10 Veff sur câbles secteur) CEI 61000-4-8 / EN 55024 niveau 4 (immunité rayonnée : 30 A/m)

CEM émission

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

Harmoniques

CEI 61003-2 / CEI 61003-4

Conception fabrication

ISO 14001 / ISO 9001

Certification et marquage

CE / LCIE

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Transformer Vs tranformerless design Phenomena at the UPS level Phenomena

Transformer topology

How to ground the neutral at the output of the UPS ?  to reduce the potential between neutral and ground)


It is forbiden to ground the neutral WITHOUT total galvanic isolation : the neutral cannot have 2 different references to earth.
Then, we need to implement an AC by-Pass transformer. Its neutral is connected to the inverter transformer neutral, both being grounded to a unique earth.

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Transformer Vs tranformerless design Phenomena at the UPS level Phenomena

Transformerless topology

How to ground the neutral at the output of the UPS ?  to reduce the potential between neutral and ground)

.. .. (1)

.


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

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