u.s. army combat capabilities development command – … · • channel 2 – fixed voltage •...
TRANSCRIPT
1DISTRIBUTION A. See first page.
U.S. ARMY COMBAT CAPABILITIES DEVELOPMENT COMMAND –GROUND VEHICLE SYSTEMS CENTER
George Hamilton
VEA
CCDC GVSC
Power Electronics and Architecture
DISTRIBUTION A. Approved for public release; distribution unlimited.
2DISTRIBUTION A. See first page.
WHY IS TARDEC DEVELOPING POWER ARCHITECTURES?
• Electrical power requirements continue to grow as more electronics are added to Military Ground Vehicles (radios, displays, computers, cameras, turret motors)
• Vehicle designs utilize proprietary electrical architectures to meet power requirements
• The Army pays for a new power architecture implementation every time a new vehicle is developed. A reusable standardized architecture implementation is needed to reduce development cost and schedule
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28VDC Power (Amps)
Alternator Size(Amps)
3DISTRIBUTION A. See first page.
ELECTRICAL POWER ARCHITECTURE SYSTEM REQUIREMENTS
• Provide 45kW @ 28VDC -> MIL-STD-1275E
• Provide 175kW @ 600VDC -> MIL-PRF-GCS600A.
• Silent Watch: 4 kW for 4 hours to vehicle Low Voltage loads with the main engine off
• Import/Export 30kW @ 208VAC
• Utilize the SAE-J1772 connector for exporting/importing High Voltage power
• Power electronics liquid cooling temp @ 105C
• Automated power management with anti-idling
• Meet the Abrams & Bradley environmental requirements contained within ATPD-2404
Enables Energy Weapons and >10% Fuel Savings
4DISTRIBUTION A. See first page.
TEMPERATURE, COOLANT, & AIRFLOW REQUIREMENTS
Ambient Temperatures• Combat Vehicles Operate in Hot, Basic, and Cold
climates as defined in AR 70-38 & MIL-STD-810G• Vehicles without air-conditioning experience
temperatures up to 71C in the crew areas• Touch temperatures less than 60C in 29.5C
ambient• Engine compartment temperatures vary from 121C
– 260C right near the exhaustCoolant Temperatures• Using Engine Coolant or 100-105C allows a
radiator size reduction of 75% from standard 70C electronics coolant
Airflow• No natural airflow on military vehicles. Assume no
airflow. Forced air cooling approaches must be able to survive MIL-STD-810G requirements
5DISTRIBUTION A. See first page.
MIL-STD-1275E & MIL-PRF-GCS600A
6DISTRIBUTION A. See first page.
SAFETY FEATURES – HV INTERLOCKS
NGCVEPA High Voltage Interlocks
7DISTRIBUTION A. See first page.
SAFETY FEATURES – HV DISCHARGE
High Voltage Discharge Requirements
• The voltage differential between the High Voltage Power and High Voltage Return pins of any High Voltage connection shall be less than 2 VDC within 300 microseconds upon HVIL circuit interruption, assuming external power has been removed.
• The assembly shall reduce all stored charge to less than 5 microcoulombsbefore access can be gained for repair activities.
8DISTRIBUTION A. See first page.
NGCVEPA ARCHITECTURE
9DISTRIBUTION A. See first page.
INTEGRATED STARTER GENERATOR CONTROLLER (ISGC)
ISGC Details:
• Power capability - 200kW High Voltage
• Three SSPC channels: 350A, 2 x 100A
• Silicon Carbide (SiC) based
• Liquid Cooled, 105oC
• Operating Temp, -45oC to +121oC
• High Power Density (181W/cu.in; 11kW/L)
• Size: 5.76” x 13.7” x 14”
• Weight: 50 lbs.
10DISTRIBUTION A. See first page.
BI-DIRECTIONAL CONVERTER (BDC)
BDC Details:
• Uses Silicon Carbide (SiC) for the 600Vdc Active bridge
• Uses Gallium Nitride (GaN) for the 28Vdc Active bridge
• Designed to be rack mounted to minimize safety concerns with HV and liquid cooling
• Liquid Cooled, 105oC
• Size: 712 in3
• Weight: 39 lbs.
11DISTRIBUTION A. See first page.
HIGH VOLTAGE POWER CONTROLLER (HVPC)
HVPC Details:
• 12 solid state circuit-protected channels (350/200/50/30x5/10x4)
• Configurable Pre-charge capability for each channel
• Provides central control of safety features:
• Ground Isolation Fault (GIF) Detection
• HV Interlock
• Overcurrent Protection
• Arc Flash Mitigation
• Silicon Carbide (SiC) based
• Liquid Cooled, 105oC
• Size: 6 x 12 x 15”, Weight: 48 lbs.
12DISTRIBUTION A. See first page.
UNIVERSAL HIGH VOLTAGE CONVERTER (UHVC
UHVC Details:
• Non-isolated continuous transfer of 120kW
• Channel 1 – Flexible Voltage
• Lower bound 270VDC MIL-STD-704F
• Upper bound 600VDC MIL-PRF-GCS600A
• Channel 2 – Fixed Voltage
• 600VDC MIL-PRF-GCS600A
• Liquid Cooled, 105oC
• RFQ has been issued to solicit development
Universal High Voltage Converter (UHVC)
Power Conversion
Heater Circuit
Processor
J1939 CAN28Vdc
Channel 2Interlock Channel 2
Iiquid Cooling
Channel 1Interlock Channel 1
13DISTRIBUTION A. See first page.
Silicon Silicon Carbide
ERCA POWER DISTRIBUTION UPGRADE