www.nidec-asi.com
Wind Farm ApplicationsWind Farm Applications
Energy
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NIDEC ASI in EnergyNIDEC ASI in Energy
NIDEC ASI has been providing variable speed drive systems, generators, static excitationsystems and soft starters for auxiliary equipment in all types of power stations, including
nuclear, worldwide for over forty years. Recently, we expanded our product basket to includeturn-key substations for Transmission and Distribution, HVDC and FACTS. As a leading
expert in Power Quality issues we are able to assist customers in the rapidly developing fieldof renewable energy where we can help design robust systems that integrate seamlessly with
the existing energy network.
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generator
AFE converter transformerMCB
MV
micro
grid
HV grid
static VARcompensationand filtering
HV
substation
single
unit
control
system
wind
farm
control
system
MCB
NIDEC ASI Wind System Know-howA fully integrated electrical package from Generator to Grid
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Technologies Currently in use
Gearbox + standard induction
Gearbox + doubly fed induction (DFIG)
Direct Drive Wound Synchronous
Direct Drive Permanent Magnet
Gearbox + multiple permanent magnet
Gearbox + Permanent Magnet(Hybrid PM)
NIDEC ASI’sExperience and reccommended
technologies for Wind Farmapplications
Multi MW Generators forWind Power Systems
Overview of Know-how
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(gearbox) + standard induction + (inverter/AFE)
GCB 500 Y6
2300 kW
1815 rpm
690 V
Simple, cost effective
“off the shelf”
solution
400…10000 kW
690V…
3.3kV…10kV
Multi MW Generators forWind Power Systems
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higher efficiency
(enhanced at partial load
operation)
higher reliability
a series of advantages wellmatched to wind systemrequirements
2 MWe
15 rpm
3.3 kV
D=4 m
Mact27 ton
3 MWe
14.3 rpm
3.3 kV
D=5.3 m
Mact40 ton
Slightly more expensive & heavier than double fed induction generator + gearbox
systems, it is technically superior, offering:
higher operation flexibility
Multi MW Generators forWind Power Systems
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Naturally born MV
Flexible and energy efficient
True overload
Fault tolerant
Easy modular repair
Grid friendly
Low cogging torque
Low ripple torque
Off shore ready
Long term stable
Lightweight
Easy to transport
3.3 kV
96% + good partial load
no overload if env<20°C
P’50%
small removable modules
All international rules ok
Tcog 0.02%
Tripple 1.8%
Corrosion resistant mats
Low & centering bearing
Mact_3MW 40 ton
3MW 5m / 2MW 4m
Multi MW Generators forWind Power Systems
Our Direct Drive Permanent Magnet - Design Features
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3MW PM DD behavior
Multi MW Generators forWind Power Systems
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Multi MW Generators forWind Power Systems
Our Hybrid Permanent Magnet Generator Solutions
Best fit for offshore applications
Medium Speed (w/single stage gearbox)100 to 500 r/min
High Speed (w/multiple stage gearbox)> 500 r/min
• Weight and Dimensions• Higher efficiency• Low torque ripple• Low cogging torque• Higher availability• Modularity• Lower Maintenance costs
• MV solutions (simplifies cabling and auxiliaries reducing cost)• IP54 protection: stator has force fluid cooling and rotor cooling is by forced air in closedloop improves resistence to harsh enviornmental conditions.
ADVATAGES
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Feasibility study completed
Project has demonstrated thatmachine offers the samepositive features as thetraditional hybrid plus
• Even higher efficiency• Better torque regularity
- Extremely low torque ripple- Complete absence of
cogging torque
Allowing operation at higherspeeds with consequentreduction of dimension andweight
Multi MW Generators forWind Power Systems
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Typical solution for Low Voltage applications up to 2 MW
G3ph
Power converter topology
Power Electronics forWind Power Systems
Our Power Converter Technology – Low Voltage Solution
Power converter topology
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Typical solution for Medium Voltage applications for 1,5 – 5MW
All NIDEC ASI drives for Wind FarmApplications are capable of thefollowing:
• Dynamic Balancing of energy loads• Active Power Control• Reactive Power Control• Fault ride through
Power converter topology
Power Electronics forWind Power Systems
Our Power Converter Technology – Medium Voltage Solution
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Power Electronics forWind Power Systems
Control System Architecture –an Example
NIDEC ASI assures seamless integration with othersystems in the plant
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Power Electronics forWind Power Systems
Our Innovative System Control card for Seamless Integration
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Generator bus
sE
LI
Load busCI
P
LOAD
CE
SILCOVAR PLUS
QP
X
Generator bus
sE
LI
Load busCI
P
LOAD
SILCOVAR PLUS
QP
Generator bus
sE
LI
Load busCI
P
LOAD
SILCOVAR PLUS
QP
X
Q
CLS III
Generator bus
sEsE
LILI
Load busCICI
PP
LOAD
CE
CE
SILCOVAR PLUS
QP QP
X
Generator bus
sEsE
LILI
Load busCICI
PP
LOAD
SILCOVAR PLUS
QP QP
Generator bus
sEsE
LILI
Load busCICI
PP
LOAD
SILCOVAR PLUS
QP QP
X
Q
CLS III
SILCOVAR plus controls the reactive power flow in the electrical line, injecting or absorbing it
Capacitive operating mode
-Q sE
CE
CI
sE
CE
CI
cIXj-Q sE
sE
CE
CE
CI
CI
sE
sE
CE
CE
CI
CI
cIXj
Inductive operating mode
cIXj
+QsE
CE
CI
sE
CE
CI cIXj
+Q
sE
sE
CE
CE
CI
CI
sE
sE
CE
CE
CI
CI
Static VAR Compenstationand Active Filtering
Our SilcoVAR Plus – Main features
SILCOVAR plus can suppress harmonics produced by nonlinear loads
The high equivalent switching frequency allows the dynamic filtering of load harmonic currentsup to 2 kHz
SILCOVAR plus has the ability to maintain full capacitive and inductive output current at lowsystem voltage which also make it very effective in improving transient stability
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TRANSFORMERLESS CASCADED H – BRIDGE MULTILEVEL CONVERTER - STAR CONNECTION
CE
CI
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
HBRIDGE
Voltage and Current (X10)Waveforms of 19 level Cascading Inverter
Capacitive operating mode
Inductive operating mode
Static VAR Compenstationand Active Filtering
Our SilcoVAR Plus – Schematics
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Current Projects15 MW onshore Wind Farm using Direct Drive Permanent Magnet
Qty 10 - GT5A11K7K1.5 MW Wind GeneratorsConfiguration:Synchronous generator (windside) + active front end (gridside)
Synchronous permanent magnetgenerators:Rated Power: 1500 kWRated Current 1255 ARated Line Voltage (at no load)690 V (magnet voltage)Rated Frequency: 20.3 Hz
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Current ProjectsIndustria 2015 - Simplified Schematic of Offshore Floating Wind Farm
1. Generator2. AFE Converter3. Transformer4. MV Network (Microgrid)5. Network Connection6. Microgrid control system
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NIDEC ASI’s StrengthsAble to supply present and future needs
• Strong System Know-how• Nearly a century of experience in the design, manufacture and supply of electrical rotatingmachinery with a long standing reputation for reliability• Full system testing capability (complete string test)• Expertise in high torque applications (such as Metals, Cement, Oil & Gas, Marine)• Can supply fully integrated electrical package – reduced number of interfaces, improvedreliability and availablity of the entire system plus optimized efficiency for site conditions.
Ride Through Capability
Line Side _ Clean Power Filter
Generator Side Low Torque Ripple
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Ready for the futureAble to supply present and future needs
NIDEC ASI has consolidated experiencein the design and supply of PowerElectronics for Marine applicationsrequiring demanding performance inharsh environments - fundamental fornear-shore and offshore applications
(Shown at left MV drive for Offshore platform. Alsoshown, Recent project: Russian Icebreaker)
NIDEC ASI isa valid partner for permanent magnetgenerator systemsfor Wind Farm Applications, both as asupplier of state-of-the-art technology andas a partner for the development of futurehigh power solutions, particularly offshore.
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