Bidirectional Energy Storage Inverter Converter, 50KW Peak Shaving and Valley Filling, Grid Dispatching
The LNBI series energy storage converters are high-power factor, high-precision programmable IGBT switching power equipment applied in smart grids and smart microgrids. Designed for three-phase energy storage systems, these converters feature adaptive 50/60Hz grid compatibility, bidirectional DC-AC conversion, four-quadrant SVPWM/SPWM technology, and bidirectional energy flow. They achieve a power factor of over 0.99, generate minimal grid harmonic pollution, and ensure high power quality. The output power factor of the energy storage converters is adjustable (-0.8 leading to 1.0 to +0.8 lagging) to meet various grid requirements. With a touch screen as the human-machine interface, they integrate display and control functions, providing real-time display of operational data, status information, and fault information, as well as historical fault information query capability (up to 200,000 records). Optional AC/DC energy meters provide accurate AC/DC energy statistics (class 0.2 accuracy). These energy storage converters can accommodate different energy storage forms including lead-acid batteries, lithium batteries, flow batteries, hydrogen fuel cells, and supercapacitors. They offer multiple communication interfaces such as RS485, TCP/IP, and CAN, with standard Modbus communication protocol for remote monitoring. Optional WIFI and GPRS communication modules allow users to download smart terminal APPs on mobile or PC devices, enabling 24/7 real-time monitoring of operational data and alarm information from anywhere. The energy storage converters dedicated to flow batteries feature a 0V pre-charge function, with selectable DCDC pre-charge and resistor pre-charge modes. In DCDC pre-charge mode, the DCDC power can be selected based on required pre-charge power (≤PCS host power), and can be adapted to suitable battery voltage ranges. The constant current value during pre-charge can be set, and comprehensive over/under-voltage, over-current, and over-temperature protection functions are provided. In resistor pre-charge mode, the pre-charge power can be selected based on requirements (≤PCS host power), with pre-charge current generated by voltage difference. The pre-charge resistor selection needs to match the flow battery internal resistance. Typical applications include peak shaving and valley filling, photovoltaic-storage-direct-flexible systems, industrial and commercial energy storage, and peak-valley arbitrage.
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