Technology
User Cases
PCS inverters have been widely used in various fields such as renewable energy grid connection, distributed power generation and AC/DC microgrids, electric vehicle energy storage applications, power transmission and distribution, and auxiliary services. In order to ensure the healthy and friendly grid operation of energy storage systems, during the industrial "R&D-production-testing" iteration process, research and test engineers need to repeatedly modify controller parameters and test conditions to conduct a series of energy storage inverter tests under different operating conditions. Based on the characteristics of building arbitrary topology models and high accuracy using semi-physical simulation, the adoption of Hardware-in-the-Loop (HIL) semi-physical hardware testing for energy storage system grid connection has gradually become a mainstream trend.
MT 8020 simulator is used to simulate multiple power conversion inverters low-voltage parallel system. The model of energy storage battery runs on the CPU, the model of power electronic components such as multiple power conversion inverters and grid runs on a single FPGA or divided into multiple FPGAs for parallel simulation. The simulator is connected to the actual controller via physical IO interface or SFP fiber optic. The energy storage battery state information is transmitted to the Battery Management System (BMS) controller through communication protocols such as MODBUS and CAN, enabling test multiple power conversion inverters low-voltage parallel system. The powerful CPU and FPGA simulation capabilities of the MT 8020 simulator, along with its device-level parallel expansion capability, assist companies in conducting functional test and technological update.
Simulate 3~5 power conversion inverter systems in parallel with 1μs-timestep.
Support MODBUS TCP, MODBUS RTU,CAN, ETHERNET TCP, ETHERNET UDP, GOOSE, serial port and other specialized protocols.
Support CPU multi-core parallel simulation. Single-core CPU can support hundreds of energy storage battery to run with 50μs-time- step.
Support up to 8 SFP fiber-optic interfaces, can easily achieve physical I/O expansion.
Support users to launch and run real-time simulation programs via python to realize automated test.
According to the testing standard requirements of the "Technical Specifications for Energy Storage Inverter Testing", different active and reactive power instructions are set while the energy storage inverter is operating in normal grid-connected mode, and the changes in active and reactive power of the energy storage inverter are observed to determine if they accurately and rapidly track the active and reactive power instructions.
According to the testing standard requirements of the "Technical Specifications for Energy Storage Inverter Testing", the response capability under different transient voltage drop conditions is tested to ensure that the energy storage inverter can operate stably and safely during grid voltage fluctuations.
According to the testing standard requirements of the "Technical Specifications for Energy Storage Inverter Testing", the energy storage inverter must safely and stably achieve grid-connected/off-grid switching.
According to the testing standard requirements of the "Technical Specifications for Energy Storage Inverter Testing", the minimum time for charge-discharge transition of the energy storage inverter should be less than 100ms.
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