The document discusses Parker's AC890PX "Cool Drive" AC drive, which uses advanced cooling technology to increase power density and reliability. The Cool Drive uses a vaporizable dielectric fluid for cooling, allowing higher power ratings in a more compact footprint than traditional air cooling. The modular design features pluggable power modules that can be easily replaced, improving serviceability. The vaporizable dielectric fluid cooling loop avoids many of the maintenance issues of water-based cooling systems. This increased power density and reliability provides value for applications such as wind power generation and grid-scale energy storage that have challenging space and environmental conditions.

1. Refrigerant Cooled
Drives using a
Vaporizable Dielectric
Fluid (VDF)
Cool Drive Overview

2. Parker AC890PX “Cool Drive”
• High Power AC Drive with advanced cooling
• Ratings through 1.5 MW
• Modular Design
• IP52 standard
• IP54 and greater available
(consult factory)
The AC890PX Cool Drive is an extension of
the popular AC890PX series. By using
Parker’s Advanced Cooling technology, the
Cool Drive offers the highest power density
available, meaning less floor space per
kilowatt.

3. What is “CoolDrive”
Extension of AC890PX with Advanced Cooling
• Increases power range
• Industry leading power density
• Increased reliability and lower risk
• High environmental protection
• Re‐uses majority of AC890PX electrical design
• Patented: Patent on air cooled AC890PX
Provisional patent on CoolDrive
• Future compact 3 phase modules for mobile
applications

4. 400KW – 1.5MW Cool Drive Dimensions
AC Fed Inverter 2500H x 2200W x 800D (mm)
DC Fed Inverter 2500H x 1200W x 600D (mm)
4Q AFE/Regen 2500H x 2800W x 600D (mm)
Note: Dimensions depend upon the IP rating
selected and include a 100mm base and 400mm
condenser.

5. Modular Design
• Pluggable Power Modules
• Sealed modules can be replaced in minutes
• Inverter Modules weigh under 50 pounds
• Replaceable by local service staff
• Freight-friendly, easily shipped around the globe
• Packaged and designed to clear customs quickly
• Integrated bus system
• Power wiring minimized
• Keyed modules eliminate errors
• No-leak dry break fittings eliminates coolant loss

6. Cooling loop for a single
pluggable phase assembly
Light, easy to service, easy
to ship = More Uptime!!!
IGBT module mounted Power connection
on cold plate plugs
Pluggable coolant
connectors
Exploded view of cold plate

7. What is Advanced, 2-Phase Cooling ?
• Cooling using a Vaporizable Dielectric Fluid
• Uses Parker’s high density cold plate technology
• Simple high performance cooling loop
• Safe, hermetic system
• Environmentally conscious
• No CFC’s
• Zero ozone depletion potential (ODP)
• Fluid is low toxicity, nonflammable, non-corrosive

8. How does VDF cooling work?
3 x cold
plates
Air Cooled
CONDENSER
Vapor
Pump
Liquid
VDF cooling loop with a pump, three cold plates and air cooled condenser.

9. Power Electronics Cooling
Customer Need & Function
Increasing Power Densities & Heat Loads
Inability to Cool Electronics with Current Technology
Differentiated Value
Dielectric fluid is Harmless to Electronics
Better Thermal Performance
Low Maintenance vs De-Ionized Water
No Make-Up Water
No Yearly System Tear Down
No Biocide Additives
No Freeze Protection Required
No Particle & Carbon filter replacement

10. Parker Advanced Cooling Value Propositions
• Increased drive power density
• Better environmental protection
• IP54 and IP65 easily implemented
• Higher ambient temperature tolerance
• Full rated power at 50+ deg C
• Increased switching frequency with no derating
• Higher reliability due to less thermal cycling of IGBT’s
• No derating when paralleling
• Self-contained cooling system.
• Non-conductive refrigerant cooling
Water + High Voltage
=

11. Best power density
Air Cooled Advanced Cooled
Heat exchanger may be
located remotely
Optional AC Input Section
2000mm H x 2400mm W x 600mm D 2000mm H x 1200mm W x 800mm D
Relative size comparison
Typical 1 megawatt DC Fed inverter @ 690V

12. Value Proposition: Wind Power
Challenge Solution: PARKER
Advanced cooled
Limited space for technology = smallest
inverters inside nacelle footprint in the
industry
DFIG systems Small size enables
require separate field full rated inverters
control – complex, with simple PM
costly generator synchronous
generators
Inverters are in Advanced cooling
difficult to access reduces thermal
locations – failures cycling of IGBT’s,
cannot be tolerated increased lifetime,
MTBF

13. Value Proposition: Grid Storage
Challenge Solution: PARKER
Difficult access Advanced cooling
reduces thermal
locations – failures
cycling of IGBTs,
are costly to Increases lifetime,
operation MTBF
Smallest available
Limited space at footprint for 1 MW +
sub-station converters
Self contained cooling
Severe power components
environments protected from
ambient conditions