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125kW bidirectional DC-DC converter

125kW bidirectional DC-DC converter

  1. Non-isolated bidirectional DC-DC converter module, which needs to operate within the specified voltage range to achieve constant voltage and constant current charging/discharging functions.
  2. Modular design for easy system integration and maintenance. Multiple power modules can operate in parallel to achieve power capacity enhancement or redundancy.
  3. The power module integrates a digital controller and provides a communication interface for external use. The operating status of the module and various monitoring electrical signals can be reported to the system through communication methods.
  4. The power module requires an external 24V auxiliary power supply.

Description

This product is a non-isolated bidirectional DC converter module. Its modular design facilitates system integration and maintenance. Multiple power modules can operate in parallel to achieve increased power capacity or redundancy. The power module integrates a digital controller and provides a communication interface externally.

● Product Features:

  • High Efficiency:
    • The wide power range efficiency is up to 99.2%;
    • CEC efficiency > 99%;
  • High Reliability:
    • Short-circuit protection;
    • Fault current interruption capability at the ms level;
    • Short-circuit capacity ;
  • High Power Density:
    • 6.34kW/L, forced air cooling;
    • Integrated control unit, power relay, and fuse;
  • Diversified Functions:
    • Supports current-balanced parallel operation;
    • Supports constant current and constant voltage charging/discharging;

● Safety Standards:

UL1741
IEC 62477-1

▲ Functional Features:

  1. Non-isolated bidirectional DC-DC converter module, which needs to operate within the specified voltage range to achieve constant voltage and constant current charging/discharging functions.
  2. Modular design for easy system integration and maintenance. Multiple power modules can operate in parallel to achieve power capacity enhancement or redundancy.
  3. The power module integrates a digital controller and provides a communication interface for external use. The operating status of the module and various monitoring electrical signals can be reported to the system through communication methods.
  4. The power module requires an external 24V auxiliary power supply.

■ Product Specification Parameters:

Item Parameter Description
DC Busbar Side (Port A)
Rated Voltage () 1500V
Operating Voltage Range () 500V~1500V
Overvoltage Protection () 1570±20V (default) 1. Protection threshold can be set and saved via communication; 2. Protection fault lock, can be reset via communication command.
Undervoltage Protection () 470±20V (default)
Voltage Measurement Accuracy 0.5% Rated operating point
Voltage Control Accuracy 0.5% Under control enable, with the following undervoltage as the基准(改为reference) [1]基准
Rated Current () 100A
Battery Side (Port B)
Rated Voltage () 1250V
Operating Voltage Range () 500V~1500V
Overvoltage Protection () 1570±20V (default) 1. Protection threshold can be set and saved via communication; 2. Protection fault lock, can be reset via communication command.
Undervoltage Protection () 470±20V (default)
Rated Current () 100A
Overcurrent Protection () 105%~120%, protection after >120% for 20s, protection within 0.1s 1. Protection threshold default reference is 100A, can be set and saved via communication; 2. Protection fault lock, can be reset via communication command.
Maximum Continuous Power 125kW Port voltage above 1250V
Current Ripple Effective Value ≤5%  Rated operating point
Voltage Measurement Accuracy 0.5% Rated operating point
Voltage Control Accuracy 0.5% Under control enable, with the following undervoltage as the reference
Current Measurement Accuracy 0.4% Rated operating point
Current Control Accuracy 0.5% Rated operating point
Efficiency
Maximum Efficiency ≥99.2% Above 1000V
CEC Efficiency ≥99% Rated operating point
Auxiliary Power Supply
Auxiliary Power Supply Voltage: 24V±2V Power: <60W Externally supplied
Protection
Fuse Integrated ≥100kA, ≥1500Vdc, L/R≥3ms
Short-circuit Protection Integrated Input or output port short-circuit
Over-temperature Protection Integrated Over-temperature protection point can be set and saved via communication
Communication Fault Protection Integrated Default 0.5s timeout protection, time can be set and saved via communication
Mechanical Specifications
Dimensions (Width×Height×Length) 350×85×600mm
Weight <15kg
Cooling Method Forced air cooling
Protection Rating Ip10
Installation Method Screw-mounted
General Parameters
Operating Temperature -25~45°C (voltage difference below 40%)
-25~40°C (voltage difference above 40%)
40~55°C/45~55°C current derating operation
Storage Temperature -40~70°C
Operating Relative Humidity 5%~85%
Operating Altitude 4000m Derating above 3000m
Noise ≤70dB, ambient temperature <30°C≤75dB, maximum
Pollution Level Pd2
Vibration and Shock Operation: IEC 60721-3-3, 3M12
Transportation: IEC 60721-3-2, 2M5
Communication RS-485, CAN, Ethernet Refer to relevant protocol documents for communication protocols
Safety Parameters
Withstand Voltage Basic insulation: 3.5kV, 50/60Hz, 60s
Reinforced insulation: 4.4kV, 50/60Hz, 60s
Basic insulation: input and output, input and chassis
Reinforced insulation: input, output, and communication auxiliary power interface
Overvoltage Category OV li
Certification Standards IEC 62477, UL 1741
Electromagnetic Compatibility
EMI Standards IEC 61000-4, FCC Part15 Class A, DC only tested for radiation
EMS Standards IEC 61000-2
Functions
Operating Modes Constant current, constant voltage, constant power, photovoltaic mode
Current Dynamics <5ms 0%~90% amplitude
Dark Start Function Supported
Parallel Function Supports up to 40 units in parallel Constant voltage mode current imbalance <7%
Lifespan
Design Lifespan 20 years Wind turbine lifespan is subject to actual operating conditions for maintenance or replacement
Calculated MTBF 400,000 hours Telcordia SR332 Issue 3

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