U.S. ARMY COMBAT CAPABILITIES DEVELOPMENT COMMAND GROUND VEHICLE - - PowerPoint PPT Presentation

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U.S. ARMY COMBAT CAPABILITIES DEVELOPMENT COMMAND GROUND VEHICLE - - PowerPoint PPT Presentation

Jun 24, 2023 561 likes •720 views

U.S. ARMY COMBAT CAPABILITIES DEVELOPMENT COMMAND GROUND VEHICLE SYSTEMS CENTER Power Electronics and Architecture DISTRIBUTION A. Approved for public release; distribution unlimited. George Hamilton VEA CCDC GVSC DISTRIBUTION A. See

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DISTRIBUTION 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.

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DISTRIBUTION 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

200 400 600 800 1000 1200 1400 1600 1800

28VDC Power (Amps)

Alternator Size (Amps)

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DISTRIBUTION 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

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DISTRIBUTION 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 exhaust Coolant 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

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DISTRIBUTION A. See first page.

MIL-STD-1275E & MIL-PRF-GCS600A

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DISTRIBUTION A. See first page.

SAFETY FEATURES – HV INTERLOCKS

NGCVEPA High Voltage Interlocks

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DISTRIBUTION 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 microcoulombs

before access can be gained for repair activities.

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DISTRIBUTION A. See first page.

NGCVEPA ARCHITECTURE

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DISTRIBUTION 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.
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DISTRIBUTION 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.
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DISTRIBUTION 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.
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DISTRIBUTION 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 CAN 28Vdc Channel 2 Interlock Channel 2 Iiquid Cooling Channel 1 Interlock Channel 1

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DISTRIBUTION A. See first page.

Silicon Silicon Carbide

ERCA POWER DISTRIBUTION UPGRADE