Flow battery energy storage converter 250K-800K
This product is a liquid-cooled energy storage converter series (250K-800K) designed for high-performance energy storage applications.
It features ultra-fast dynamic response (load switching as low as 10ms), supports multi-unit parallel operation (scalable up to 2MW), enables seamless grid-connected/off-grid switching to ensure uninterrupted power supply for critical loads, and allows independent control of active and reactive power to optimize energy quality.
The series includes four models (PCS1-250KL, PCS1-500KL, PCS1-630KL, PCS1-800KL) with DC input voltage range of 0-900V, rated AC power from 250kVA to 800kVA, high efficiency (up to 99.1%), forced air cooling, IP20 protection, and Modbus TCP/RTU/CAN 2.0 communication protocols.
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Product Description
Liquid-Cooled Energy Storage Converter (250K-800K Series)
In the rapidly evolving landscape of energy storage systems, reliable, high-efficiency, and flexible power conversion solutions are critical to unlocking the full potential of renewable energy integration, grid stabilization, and backup power supply. The Liquid-Cooled Energy Storage Converter 250K-800K series (PCS1 series) stands out as a cutting-edge solution engineered to meet the most demanding industrial and commercial energy storage requirements, combining advanced liquid cooling technology, robust performance parameters, and intelligent control capabilities to deliver unparalleled operational efficiency and reliability.
Product Parameters
Liquid-Cooled Energy Storage Converter 250K-800K | ||||
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Product Model |
PCS1-250KL |
PCS1-500KL |
PCS1-630KL |
PCS1-800KL |
DC Parameters |
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DC Input Voltage Range |
0-900V |
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Maximum DC Input Current |
459A |
917A |
1155A |
1467A |
AC Grid-Connected Parameters |
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Rated AC Power |
250kVA |
500kVA |
630kVA |
800kVA |
Maximum Power |
275kVA |
550kVA |
693kVA |
880kVA |
Rated Grid Voltage |
400V ±15% |
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Rated Grid Frequency |
50Hz/60Hz ±2.5Hz |
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AC Current Harmonic Distortion |
<3% (at rated power) |
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Voltage Unbalance |
<0.5% |
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Power Factor |
±1 |
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AC Off-Grid Parameters |
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Rated Output Voltage |
400V ±15% |
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AC Voltage Distortion |
<3% (linear load) |
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DC Voltage Component |
<0.5%Un (linear unbalanced load) |
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Rated Off-Grid/Grid Frequency Range |
50Hz±2Hz / 55Hz±2Hz |
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System Parameters |
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Isolation Type |
Non-isolated |
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Maximum Efficiency |
98.50% |
98.70% |
99.10% |
99.10% |
Cooling Method |
Forced Air Cooling |
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Protection Grade |
IP20 |
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Dimensions (L×W×H, mm) |
900×1900×800 |
900×2000×800 |
1100×2000×900 |
1200×2000×900 |
Communication Method |
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Main Communication Protocol |
Modbus TCP/RTU/CAN 2.0 |
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Communication Interface |
RJ45, RS485/CAN |
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Core Performance Advantages
At the heart of this converter series lies a suite of performance features that redefine industry standards for energy storage converters. First and foremost, its ultra-fast dynamic response sets it apart: the load switching time is reduced to as low as 10ms under full-load conditions. This rapid response capability ensures that the converter can adapt instantaneously to fluctuations in power demand or grid conditions, making it ideal for applications where real-time power adjustment is critical—such as frequency regulation, peak shaving, and voltage support for high-priority industrial loads.
Another key advantage is its scalability and parallel operation capability. The converter supports multi-unit parallel operation, with a maximum expandable capacity of 2MW. This modular design allows users to start with a smaller configuration (e.g., a single 250KL unit) and scale up incrementally as energy storage needs grow, eliminating the need for large upfront investments and ensuring optimal resource utilization. Whether for small-scale commercial energy storage systems or large-scale utility-grade projects, this scalability makes the 250K-800K series a flexible choice for diverse application scenarios.
Seamless grid-connected/off-grid switching is another critical feature that guarantees uninterrupted power supply for critical loads. In the event of a grid outage or voltage fluctuation, the converter can switch between grid-tied and off-grid modes with minimal latency, ensuring that essential equipment (such as data center servers, medical devices, or manufacturing lines) remains operational. This capability is indispensable for industries where power interruptions can lead to significant financial losses or safety risks, underscoring the converter’s role as a reliable safeguard for critical infrastructure.
Additionally, the converter enables independent control of active and reactive power, a feature that significantly enhances energy quality. By adjusting active power (to manage real power flow between the energy storage system and the grid) and reactive power (to optimize voltage stability and power factor) independently, the converter helps reduce grid losses, improve power factor, and mitigate voltage sags or swells. This not only lowers energy costs for end-users but also contributes to overall grid stability, aligning with global efforts to build smarter, more resilient power systems.
For communication and control, the converter supports Modbus TCP/RTU and CAN 2.0 protocols, with dual communication ports (RJ45/RS485/CAN) for seamless integration into building management systems (BMS), energy management systems (EMS), or grid control platforms. This connectivity enables real-time monitoring of key parameters (e.g., input/output power, temperature, efficiency), remote control of operation modes, and predictive maintenance—maximizing system uptime and reducing maintenance costs.
Seamless grid-connected/off-grid switching is another critical feature that guarantees uninterrupted power supply for critical loads. In the event of a grid outage or voltage fluctuation, the converter can switch between grid-tied and off-grid modes with minimal latency, ensuring that essential equipment (such as data center servers, medical devices, or manufacturing lines) remains operational. This capability is indispensable for industries where power interruptions can lead to significant financial losses or safety risks, underscoring the converter’s role as a reliable safeguard for critical infrastructure.
Additionally, the converter enables independent control of active and reactive power, a feature that significantly enhances energy quality. By adjusting active power (to manage real power flow between the energy storage system and the grid) and reactive power (to optimize voltage stability and power factor) independently, the converter helps reduce grid losses, improve power factor, and mitigate voltage sags or swells. This not only lowers energy costs for end-users but also contributes to overall grid stability, aligning with global efforts to build smarter, more resilient power systems.
Technical Specifications and Model Variants
The 250K-800K series comprises four meticulously engineered models—PCS1-250KL, PCS1-500KL, PCS1-630KL, and PCS1-800KL—each tailored to different power capacity requirements while maintaining consistent core performance standards.
DC and AC Parameters
All models share a DC input voltage range of 0-900V, making them compatible with a wide range of lithium-ion battery systems commonly used in energy storage applications. The maximum DC input current varies by model: 459A for the 250KL, 917A for the 500KL, 1155A for the 630KL, and 1467A for the 800KL, ensuring efficient power conversion from DC battery storage to AC grid power.
On the AC side, the rated AC power ranges from 250kVA (250KL) to 800kVA (800KL), with maximum power ratings of 275kVA, 550kVA, 693kVA, and 880kVA respectively—providing a 10% overload capacity to handle short-term peak power demands. The rated grid voltage is 400V ±15%, with a grid frequency range of 50Hz/60Hz ±2.5Hz, ensuring compatibility with both 50Hz and 60Hz power grids worldwide. Critical power quality metrics are also exceptional: AC current harmonic distortion is less than 3% (at rated power), voltage imbalance is under 0.5%, and the power factor is maintained at ±1, minimizing harmonic pollution and ensuring compliance with strict grid connection standards.
Grid-Connected and System Parameters
For grid-connected operation, the converter maintains a rated grid voltage of 400V ±15%, with AC voltage distortion below 3% (linear load) and DC voltage component less than 0.5% Un (linear unbalanced load)—all of which meet international grid code requirements for clean, stable power injection into the grid. The rated grid frequency adaptation range (50Hz±2Hz / 55Hz±2Hz) further enhances its compatibility with regional grid variations.
In terms of system efficiency, the series achieves industry-leading levels: the 250KL model has a maximum efficiency of 98.5%, while the 500KL reaches 98.7%, and the 630KL/800KL models top out at 99.1%. This high efficiency translates to minimal energy loss during power conversion, directly reducing operational costs and improving the overall return on investment (ROI) of the energy storage system. The converter uses forced air cooling (a reliable, low-maintenance cooling solution) and features an IP20 protection grade, making it suitable for indoor installation in industrial environments while providing adequate protection against dust and accidental contact.
In terms of system efficiency, the series achieves industry-leading levels: the 250KL model has a maximum efficiency of 98.5%, while the 500KL reaches 98.7%, and the 630KL/800KL models top out at 99.1%. This high efficiency translates to minimal energy loss during power conversion, directly reducing operational costs and improving the overall return on investment (ROI) of the energy storage system. The converter uses forced air cooling (a reliable, low-maintenance cooling solution) and features an IP20 protection grade, making it suitable for indoor installation in industrial environments while providing adequate protection against dust and accidental contact.
Physical and Communication Features
Each model is designed with optimized dimensions to balance power density and installation flexibility: the 250KL measures 900mm×1900mm×800mm, the 500KL is 900mm×2000mm×800mm, the 630KL is 1100mm×2000mm×900mm, and the 800KL is 1200mm×2000mm×900mm. These compact footprints allow for easy integration into existing electrical rooms or containerized energy storage systems.
For communication and control, the converter supports Modbus TCP/RTU and CAN 2.0 protocols, with dual communication ports (RJ45/RS485/CAN) for seamless integration into building management systems (BMS), energy management systems (EMS), or grid control platforms. This connectivity enables real-time monitoring of key parameters (e.g., input/output power, temperature, efficiency), remote control of operation modes, and predictive maintenance—maximizing system uptime and reducing maintenance costs.
Application Scenarios
The versatility of the 250K-800K series makes it suitable for a broad range of applications:
Utility-Scale Energy Storage: Supporting grid peak shaving, valley filling, frequency regulation, and renewable energy curtailment reduction.
Industrial and Commercial Energy Storage: Providing backup power for manufacturing facilities, data centers, and commercial buildings, while optimizing energy costs through time-of-use electricity pricing strategies.
Microgrid Systems: Enabling stable operation of off-grid or hybrid microgrids (e.g., in remote areas, mining sites, or island communities) by balancing power supply from renewable sources (solar/wind) and battery storage.
In conclusion, the Liquid-Cooled Energy Storage Converter 250K-800K series represents a pinnacle of energy storage conversion technology, combining fast response, scalability, high efficiency, and intelligent control to address the diverse needs of modern energy systems. Its robust technical specifications, global grid compatibility, and flexible design make it a trusted choice for energy storage projects of all scales, driving the transition to a more sustainable, reliable, and efficient power future.
In conclusion, the Liquid-Cooled Energy Storage Converter 250K-800K series represents a pinnacle of energy storage conversion technology, combining fast response, scalability, high efficiency, and intelligent control to address the diverse needs of modern energy systems. Its robust technical specifications, global grid compatibility, and flexible design make it a trusted choice for energy storage projects of all scales, driving the transition to a more sustainable, reliable, and efficient power future.
