1. Product Introduction: Power Film Capacitors 944U and 945U Series Marketing: Ken Thompson Product Engineer: Brian Padelford

2. Training Agenda Film Capacitors for DC Link: Aluminum versus Film
Power Film Capacitors for DC Link
Introduction of 944U and 945U Series
End Markets and Applications
Competition
Sales Action

3. Capacitors for DC Link
DC link capacitors, aka bus or input capacitors, filter the rectified mains and supply pulse energy to the input of the inverter. Aluminum Electrolytic capacitors are typically used because of their high capacitance and bulk storage capability.

4. Capacitors for DC Link
DC Link capacitors must provide both bulk energy storage and ripple current filtering.
Some applications such as UPS and motor drives typically need high capacitance to prevent voltage sag during a power outage but it is often necessary to use excess aluminum capacitors in order to handle the ripple current requirements.

5. Capacitors for DC Link Film Versus Aluminum Electrolytic
Lower cost for high ripple current applications
Film caps are made to higher voltage ratings eliminating the need for complex parallel-series banks and balancing resistors.
Fewer components results in lower assembly costs
High Reliability
Film caps can handle much higher overvoltage surges
Self healing
Film capacitors don’t contain electrolyte.
No dryout
No corrosion
No leakers

6. Capacitors for DC Link
Selecting the best capacitor for an application. Film or Aluminum?
The main determining factors in choosing between an aluminum electrolytic and a film capacitor:
If high capacitance is needed for “holdup” or to prevent voltage sag, aluminum electrolytics may be the best selections.
Film capacitors are typically a better choice for applications requiring high ripple current and lower capacitance.
Consider cost of electrolytics (series-parallel bus work and balancing resistors)
Look at other design considerations such as life, reliability, cold impedance, physical size, possibility of overvoltage transients, etc.
The rules of thumb outlined in this presentation for the cost per joule and the cost per amp will be of some help in choosing the right capacitor. The technical staff at Cornell Dubilier is always eager to help with any design questions your customer may have.

7. Type 944U “Hockey Puck” style Capacitor for DC Link
Low inductance
Robust mounting for high vibration (electric vehicles)
High ripple current ratings

8. Type 944U “Hockey Puck” style Capacitor for DC Link

9. Type 944U “Hockey Puck” style Capacitor for DC Link

10. Type 944U “Hockey Puck” style Capacitor for DC Link

11. Type 944U “Hockey Puck” style Capacitor for DC Link
Competitive Cross Reference
Series for Series
CDE
AVX
Electronic Concepts
Arcotronics
944U
FFVE
UL31 & UL32
C4DE

12. Type 945U Capacitor Series for DC Link
Highlights
Same package as aluminum electrolytics making conversion from film to aluminum an easier one.
Drop in replacement for ECI’s UL30 (takeaway business)
600 Vdc bus voltage

13. Type 945U Capacitor Series for DC Link

14. Type 945U Capacitor Series for DC Link

15. Competitive Cross Reference Series for Series
CDE
Electronic Concepts
945U
UL30

16. Target Markets & Applications for Power Film Capacitors
Inverters
Renewable Energy
Wind, Solar, Fuel Cell
Electric Transportation
Trucks, Carts, Buses, Scooters, Cars, Trains
RF Generators for Semiconductor Processing
UPS and Flywheel
Welding
Motor Drives, including VSD HVAC

17. Sales Action Plan Target Inverter Accounts Distribution
Introduce 947C, 944U, 945U Series and UNL series
Look for opportunity to displace ECI’s UL30 with 945U series drop-in replacement
Discuss opportunities to use film in place of aluminum capacitors.
Are they currently using film capacitors as DC Link?
Are they considering using film for DC Link in next gen designs?
Are they using competitive Power Films: AVX, Arcotronics, Electronic Concepts, ASC, Electronicon, Epcos, Vishay, Icar?
Distribution
Introduce these new products to the distributor branches.
Find the opportunities

18. Thank You
Questions?