The working modes of the bidirectional energy storage converter PCS are divided into grid connected mode, off grid mode, and hybrid mode.

1. Grid connection mode

The grid connection mode includes charging and discharging functions, and users can choose between automatic mode and manual mode. In automatic mode, if the user selects grid connected charging or discharging status, the energy storage inverter will charge or discharge the battery at the previously set value. In manual mode, users can manually modify the charging or discharging current, voltage, and time values to make the energy storage inverter work in the set charging or discharging state.

In grid connection mode, the energy storage inverter is connected to a large capacity public power grid, which refers to the total capacity of the grid being at least 10 times greater than the capacity of the energy storage inverter. The main feature of grid connection mode is that the energy storage inverter must be synchronized with the existing grid frequency. To achieve synchronization with the power grid, the energy storage inverter serves as a current source relative to the power grid. In some cases, energy storage inverters must be able to provide voltage support to the power grid through reactive power control. This mode is commonly used for peak shaving and valley filling, power load balancing, and regulating power quality.

2. Off grid mode

An island system is a local "microgrid" formed by one or more power generation systems in parallel. The main feature of an isolated island system is that the local power grid is disconnected from all major power grids, and the rated power of the energy storage system is roughly equal to the total power generated by the local power grid. In this system, the energy storage system must be able to act as a network power source, providing voltage and frequency control to the local power grid. On the other hand, if a power generation device cannot synchronize with other power generation devices, such as a diesel generator connected to a local power grid, then the energy storage system must be synchronized as a power source. In some cases, the energy storage system also needs to switch between serving as a power source and synchronizing with the power generation device.

The characteristic of an isolated island system is that the energy storage system is connected to a local power grid, which may exist in remote mountainous areas or small islands. Common applications include smoothing power fluctuations caused by variable power sources and loads, stabilizing the power grid, optimizing fuel usage, and regulating power quality.

3. Hybrid mode

The energy storage system can switch between grid connected mode and off grid mode. The energy storage system is in a microgrid, which is connected to the public power grid. Under normal working conditions, it operates as a grid connected system. If the microgrid is disconnected from the public power grid, the energy storage system will operate in an off grid mode to provide the main power supply for the microgrid. Common applications include filtering, stabilizing power grids, regulating power quality, and creating self-healing networks.

Product characteristics of Sino Soar's bidirectional energy storage converter

✔ Intelligent and efficient

Advanced three-level circuit topology with a maximum conversion efficiency of 98%

Wide DC voltage range, 600-950V

Advanced control algorithms with multiple operation modes including constant current, constant voltage, and constant power available

Equipped with off grid output function

Supports long-term overload operation at 110% rated power, and overload at 150% rated power for 10ms

Stable operation of intelligent air cooling and liquid cooling

✔ Economically friendly

Ultra high power density, smaller volume with equal power

Integrated design for easy transportation and integration

Support multi machine AC/DC parallel connection and flexible expansion

Independent modular architecture, convenient maintenance

✔ Safe and reliable

Complete battery protection and maintenance strategies to improve battery life

Protection against overcurrent, overheating, overload, overvoltage, short circuit, lightning protection and grounding

Equipped with zero voltage and high voltage traversal functions, with strong adaptability to the power grid

High performance DSP, optimized control circuit design, more stable system

Adapt to harsh environments of low temperature, high humidity, and high altitude

✔ Smart Internet

Supports RS485, Ethermet, and CAN communication methods, and can receive BMS commands in real-time

Support MODBUS-RTU/MODBUS-TCP/CAN2.0B/

About us

Sino Soar was established in 2015 and is located in Shenzhen, the electronic city of China. The company is committed to providing users with system solutions for power monitoring, power quality management, electrical safety, etc. It is a national high-tech enterprise specializing in the research and development, manufacturing, sales, and service of power electronic devices.

The company's main products include PCS energy storage converters, optical storage integrated machines, and ene