power back up 1-14052012

Newave SA, Switzerland – [email protected] - www.newaveups.com28/02/2006 ML3-49 1

UPS SOLUTION FOR HIGHEST UPS SOLUTION FOR HIGHEST

POWER PROTECTIONPOWER PROTECTION

AVAILABILITYAVAILABILITY


PART ONEPART ONE

Newave SA – [email protected] - www.newaveups.com28/02/2006 ML3-49 3

(n+1)- DPA . . .No Single Point of Failure. . .Highest Availability

Critical Application

““Mission critical applications”Mission critical applications”

requirerequire

high power availabilityhigh power availability

DISTRIBUTED PARALLEL ARCHITECTURE DPA


Why do we parallel UPS’s ? For Superior Reliability (Redundancy)

The answer to superior reliability requirements for business-critical applications is true redundancy, where all parallel modules equally share the load. If one module fails the remaining modules will continue to provide power protection.

For Power Upgrade (Scalability)To meet the power requirement demands of growing data-centers and telecomsystems it is possible to easily reconfigure an existing UPS-power system by simply adding one or more modules.

(n+1)- DPA . . . No Single Point of Failure . . . Highest Availabity



• Fictitious Parallel Architecture

- Hot-Stand-by (Cascade) Configuration

• Standard Parallel Architecture

- Parallel UPS

• Newave‘s Leading Concept

- Decentralized Parallel Architecture (DPA)

Evolution of Parallel Architecture



• Each UPS can support total load• No-load condition for No 2• Compromise solution - no parallel load

sharing• The overload capability is limited by the

capacity of one single system = 150%

typical • The system must execute 2 by-pass

operations under overload conditions in

series !

Hot-Stand-by Configuration Cascade system

Fictitious Availability

Mains

By-pass Line (1) Load

Mains

By-pass Line



100% load

50% load

50% load

• Load sharing with two units

• Each UPS can support total

load (if redundant)

• Full overload capability of

2 units = 300% typical

Standard Parallel Architecture



+

Decentralized Bypass

OR

Centralized Bypass

=

Two different parallel topologies



Parallel - UPS with Centralized Bypass

• Limited extension at high cost

• Low Reliability

• Extendible only with power interruption

• Unit splitting with high costs

• Additional cabling and cabinetSingle point of failure



• High reliability

• Easy to extend (scalable)

• Low cost for power extensions

• Easy downgrading from parallel to

single version is possible

Parallel - UPS with Decentralized Bypass



• Redundant by-pass

• Scalability

• No single point of failure

Parallel UPS + decentralized By-Pass offers:

What about control electronics?What about control electronics?



Single point of failure

• One defined UPS is leader

• Logic failure = System failure

• One critical UPS Element is not redundant

Parallel-UPS with Centralized Logic: “Master-Slave”




• Only One Element can decide for all units

• Logic failure = System failure

• One critical UPS Element is not redundantC.B

Parallel-UPS with Centralized Logic: “Common Box”



Parallel systems offer increased reliability

They still have single failure points

It’s the intermediate step to reachIt’s the intermediate step to reach

redundancyredundancy

NOT EVERY PARALLEL UPS IS A REDUNDANT SYSTEM!



“Redundancy” means:The existence in the system of more than one possibility to

fulfil the demanded function - or - the system can afford at

least one single failure of any type

Redundancy degree is “n+x”:n = number of units / elements to fulfil the demanded function

x = number of units / elements which can fail without influence

n+1 = one unit / element can fail and the demanded function is maintained

“Redundant Parallel Systems”



Example:if the demanded function is fly, redundancy means:

• If one wing fails the demanded function is not maintained NO REDUNDANCY

• 3 engines can fails and the demended function is mantained REDUNDANCY N+3




50% load

50% load

100 kVA

Demanded function is supply the load

100 kVA

Critical load = 100kVA

• Redundancy N+1

Redundancy in UPS means



Fault tolerance: A fault-tolerant or failure-tolerant system is a system which

continues its operation even if one or more parts of the system fail

Error masking: Capabilty to mask failures in order to avoid any influence on the

demanded function

Error detection: A sensor / supervisory-element to detect single failures

Error isolation: Capability to isolate faulty parts without disturbing the demanded

function

REDUNDANCY IN UPS MEANS


Fault Analysis - part identification: Capability to analyse a failure and identify the faulty part

Error removal: Replacement of faulty parts without disturbing the demanded

function

Return to normal mode: Normal operation will be restored without interrupting the

demanded function



!! WITHOUT INTERRUPTION !!

All these operations must be carried out withoutputting any strains on the load:

•Fault tolerance

•Error masking•Error detection

•Error isolation

•Fault analysis

•Error removal

•Return to normal mode



1. Decentralized Parallel Architecture (DPA)

2. Independent:

- Power Circuits (inverter,

rectifier, static bypass)

- Control Logic

- Regulation Logic

3. No single point of failure

4. Any UPS can be the logic leader (MultiMaster system)

5. No limitation in number of Parallel units

6. Perfect Load Sharing

Mains

Regulation

Logic

Control

Logic

UPS 1

Regulation

Logic

Control

Logic

UPS 2

Recifier Inverter

Recifier Inverter

Static Bypass

Parallel Regulation BusParallel Logic Bus

Critical load

Static Bypass

NEWAVE’S LEADING CONCEPT


Sequential softstart after utility recovery or gen-set start:

• no over-rating of gen-set• no disturbance of other connected loads

• no cables overheating

Connection to Wavemon Management Software allows:

• single unit access • single module access ( rectifier, inverter, battery)• remote monitoring and operation



SECOND PARTSECOND PART

power back up 1-14052012

Technology

parallel modules

parallel upss

parallel load bypass

different parallel topologies

cabinet28022006 newave

possible28022006 newave

one28022006 newave sa

load load sharing