1. Type 947D, DC Link Capacitors
Product Release, April 2012

2. Type 947D, DC Link Capacitors
High Energy Density DC Link Capacitors for Large Inverter Systems

3. 947C versus 947D 947C 947D Smaller Size, Better Performance
1st generation of DC link Film Capacitors
Advanced Film Technology.
Smaller Size,
Better Performance
Recommended for all new designs
We will continue to support customers who have active production .

4. 947C versus 947D 947D 947C 947D, Higher Energy Density 947C 947D
Type
947D
Capacitance
420µF
Voltage
1100 Vdc
Diameter
85 mm
Length
136 mm
Energy Density
0.33 J/cm^3
ESR
2.8 mOhm
Ripple
56 A
Type
947C
Capacitance
430µF
Voltage
1100 Vdc
Diameter
90 mm
Length
170 mm
Energy Density J/cm^3
0.24 J/cm^3
ESR
3.4 mOhm
Ripple
57 A
947C
947D
430µF Vdc
420µF Vdc
20% Smaller size for same CV
Higher capacitance density
Higher current density

5. 947D versus 947C Mechanical 947C 947D Euro Style Plastic Header Cap
Increased terminal to case insulation
Barrier between terminals increases arc distance between terminals
Black insulating
Sleeve Standard
Bare can standard, black insulating sleeve is optional
Sizes DØ: 85, 90, 116mm
Sizes: DØ 85, 90, 100, 116mm

6. Type 947D Mechanical Specifications
Connected to the + and - inverter bus bars using M8 threaded studs or
M6 threaded inserts.
Optional
M12 X 16 stud at bottom of case for chassis mounting. Non electrical

7. Type 947D Technology
Segmented Metallized Polypropylene, Controlled Cap Loss, Open Circuit Fail mode.
Types 947D utilizes segmented metallized polypropylene
Segmented metallized pattern offers the advantages of controlled cap loss and open circuit protection.

8. Type 947D Used as DC link in Large Inverter Systems

9. Inverter Topology

10. Inverter Applications Inverters Convert DC to AC

11. DC FILtering At Input 60 Hz AC is rectified to DC with high ripple AC
Most electronic applications do not perform well with high AC ripple.
A filter, capacitor is placed between the rectifier and the load to smooth the voltage by filtering out much of the unwanted AC.

12. Inverter Applications
Inverter switching produces ripple voltage across the capacitors resulting in high ripple current.
Total ripple current is from rectification and switching
Ripple current heats the capacitor (blue peaks below)
Higher temperature shortens capacitor life

13. Focus on Inverter Applications
Inverters Convert DC Voltage Into AC Voltage
INVERTER
Renewable Energy
Wind
Solar
Fuel Cells
Industrial
Welding
Lasers
Semiconductor Processing
Motor Drives
Elevator
Industrial Motor Drives
Electric Vehicles
Power Backup
UPS
Flywheel
Battery Chargers
SMPS
Most solar and wind inverters use film capacitors for DC Link 13

14. Focused Market for 947D Solar Inverters
Solar, Photovoltaic (PV Inverters)
Growth of new installations doubled in 2010
US – 1 GW added in 2011
WW – 16 GW
Commercial Rooftop systems
Large scale installations: Utility
Market for DC Link Capacitors in Solar Applications
US - $10M
WW - $160M
Capacitor Opportunities in Solar:
947D, DC Link Power Film, Screws, IGBT snubbers, Carbon Double Layer

15. Focused Market for 947D Wind Inverters
Wind Energy
Global increase of 35 GW in 2011
US adding 10 GW / yr
Utilize large inverter systems: 500KW to 5MW
$10M annual market for bus capacitors in US wind inverters
Capacitor Opportunities in Wind Power: D, DC Link Power Film, Screws, IGBT snubbers, Carbon Double Layer

16. Focused Market for 947D Electric Vehicles
Electric Transportation EV and HEV (Inverters) :
Hybrid Buses
Commuter Rail
Off-road ruggedized vehicles
Industrial electric vehicles
Battery Chargers
Opportunities in HEV: Dc Link, Power Film, Screw Terminal, IGBT snubbers, Carbon Double Layer

17. Competitors Type 947D Manufacturer Series 947D Link to 947C Datasheet
Electronicon
PK16XC/XI
Epcos
B2562_
Vishay
DCMKP
Kemet/Arco
C44U
AVX
FFLI
Eaco
SHP
Faratronic
C3B
ASC
IFP
Ducati
DC85C
Electronic Concepts
UP3
F&T EC
Hitachi AIC
MLC
ICAR
LNK-M3…2
Nucon (Russia)
FA1M
Spectrum
55DC
947D
Link to 947C Datasheet

18. CDE’s Competitive Advantage, Type 947D
Fused / segmented metallized film system limits cap loss and enhances open circuit failure mode.
100% burn-in
Direct access to engineers to discuss customer’s application

19. Product Support team Type 947D
Product Marketing Manager, Mario DiPietro (Liberty)
Product Specialist, Mike Rapoza (New Bedford)
Engineering Manager, Phil Whitmire (Liberty)
Director of R&D, Sam Parler (Liberty)
Marketing, Scott Franco (New Bedford)

20. Sales Action Plan Type 947D
Introduce Type 947D DC Link Film Capacitors to inverter design engineers within your territory.
Target Customer List
Discuss opportunities for new inverter designs
Find Opportunities to displace competitors in existing designs
Register your NBO’s via your Infocenter !!!!!!!!
Identify and train key distributor branches and regional distributors that serve these markets and inverter customers.
Target customer list and buddy calls.

21. Thank you! 