English Translation
Against the rapid development of new energy energy storage and DC microgrids, common industry pain points have emerged including mismatched voltages between batteries and busbars, low efficiency of bidirectional energy flow and insufficient system stability. The 800kW energy storage DC-DC system, specially developed for high-power energy storage scenarios, solves technical difficulties in DC power supply scenarios with core advantages of high efficiency, outstanding stability and intelligent operation.
Project Background
For high-end application scenarios such as full DC power supply, zero-carbon parks and energy storage stations, there is a fixed voltage difference between energy storage battery voltage and busbar voltage, making direct charging and discharging impossible. Professional high-power bidirectional DC conversion equipment is urgently required to realize efficient bidirectional energy transmission and ensure stable system operation.
Core Pain Points
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The voltage range of energy storage batteries is 583-730V while the rated busbar voltage is 750V; direct connection is unavailable due to voltage mismatch.
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High efficiency and low power loss are required for high-power charging and discharging to reduce energy waste.
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The system needs to support both constant voltage and constant current modes to meet diverse energy storage control requirements.
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On-site operation and maintenance require visual monitoring, remote communication and multi-level safety protection functions.
Solution
Adopting a parallel design of four 200kW modules, the complete unit achieves a rated output power of 800kW to form an integrated energy storage DC-DC conversion system.
Core Technical Advantages
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High-Efficiency Conversion
The maximum conversion efficiency reaches 99% under test conditions, greatly cutting down energy loss.
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Wide Voltage Adaptation
Perfectly matches voltage difference demands with 583-730V on the energy storage side and 750V rated voltage on the busbar side.
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Stable Control Performance
Static voltage/current stability within ±1% and dynamic stability within ±3% ensure smooth output.
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Intelligent Operation & Maintenance
Equipped with 10-inch touch screen and LEMS local monitoring system, supporting remote telemetering and remote control via RS485, CAN and Ethernet.
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Comprehensive Protection Mechanism
Full protection against overvoltage, undervoltage, overcurrent, overtemperature and communication faults, with automatic fault recovery function.
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Easy Deployment
Adopts air-cooled heat dissipation design with IP20 protection grade and dedicated forklift base for convenient transportation and rapid installation.
Key Parameters
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Rated Power: 800kW (Single module: 200kW)
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Energy Storage Side Voltage: 583-730Vdc, Max. Current: 1500A
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Busbar Side Voltage: Rated 780Vdc, Max. Current: 1026A
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Operation Mode: Automatic switching between constant voltage and constant current
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Communication Protocol: Modbus RTU/TCP, CAN2.0A/B
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Operating Environment: -40℃ ~ +55℃, humidity 0~90% non-condensing
Application Scenarios
It has been successfully applied in airport full DC zero-carbon power supply systems, integrating photovoltaic power generation, energy storage and DC loads to realize off-grid independent operation. It delivers eco-friendly, low-carbon, stable and reliable power supply solutions for high-end scenarios. It is also applicable to high-power DC conversion demands of energy storage power stations, port potential energy recovery, power battery testing, special vehicles and other fields.
Solution Values
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Solve voltage mismatch issues and realize efficient bidirectional energy flow.
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Highly stable output guarantees long-term safe operation of energy storage systems.
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Intelligent monitoring and remote communication effectively reduce operation and maintenance costs.
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Modular structure supports flexible capacity expansion to satisfy high-power demands across various scenarios.
Empowering new energy storage and DC microgrids with professional DC conversion technology, we provide reliable core equipment for zero-carbon scenarios and industrial high-power power supply systems.
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021-31587108
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