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PV inverters connected to the grid on a large scale will face very complex working conditions, in order to ensure the healthy grid-connected operation of new energy systems, in the iterative process of "R&D-Production-Testing", R&D and testing engineers have to repeatedly modify the control parameters and filter parameters to carry out a series of inverter performance tests under different working conditions. Based on the semi-physical simulation to support the construction of any topology model and the characteristics of a high degree of accuracy, the use of hardware-in-the-loop for the grid-connected permit test of the inverters has become the mainstream trend nowadays.
ModelingTech’s real-Time simulator is a highly reliable, accurate and easy-to-use simulation platform, which is an important part of our test platform that is at the same level as that of the China Electric Power Research Institute (CEPRI). The high and low voltage ride-through test and impedance analysis test accomplished by HIL simulation platform have solved many of our grid-connected test problems.
"远宽能源实时仿真器是一款可靠性高、准确度高、操作上手简单的仿真平台，是我们构建与力科学研究院相同水平了很多我们并网测试的的测试平台的重要组成部分。通过半实物仿真平台完成的高低压穿越测试、阳抗分析测试解难题,相比较实物测试，半实物仿真测试效率与时效性得到了大幅应提高,仿真结果的存储理与分析难度也相对应地减少。更让我们感到满意的是远宽能源的售后与技术支持,及时的响应与耐心的指导加上次现场培训，不仅解决了测试过程中的难题,提高了测试效率,也帮助我们培养了更多优秀的半实物仿真平台使用人5提升了研发团队的整体实力。"
"远宽能源实时仿真器是一款可靠性高、准确度高、操作上手简单的仿真平台，是我们构建与力科学研究院相同水平了很多我们并网测试的的测试平台的重要组成部分。通过半实物仿真平台完成的高低压穿越测试、阳抗分析测试解难题,相比较实物测试，半实物仿真测试效率与时效性得到了大幅应提高,仿真结果的存储理与分析难度也相对应地减少。更让我们感到满意的是远宽能源的售后与技术支持,及时的响应与耐心的指导加上次现场培训，不仅解决了测试过程中的难题,提高了测试效率,也帮助我们培养了更多优秀的半实物仿真平台使用人5提升了研发团队的整体实力。"
The MT8020 simulation platform simulates the industrial PV inverter system device, puts the PV unit in the CPU simulation, the PV inverter and the power electronic part of the power grid in the FPGA simulation, and then through the physical IO interface with the real controller, so as to complete the closed-loop testing of PV inverter. MT8020 real-time simulator's powerful FPGA simulation ability assists enterprises to carry out self-research control board test, product factory test and control effect verification.
Simulate 3~5 PV 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 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.
Scanning impedance using voltage perturbation injection method is used to scan the impedance of PV inverter and give the positive sequence impedance and negative sequence impedance in the range of 1Hz-2000Hz.
According to the "Golden Sun Certification Standard" "Grid-connected PV Power Generation Special Inverter Technical Requirements and Test Methods", the inverter anti-islanding effect protection test is carried out.
Test the inverter output power factor, harmonic distortion rate, DC component and other parameters to meet the grid connection standard.
Test the inverter's ability to respond to sudden changes in grid frequency over a period of time to achieve the control effect of PV without going off-grid.
According to the Technical Specification for Grid-Connected Photovoltaic Inverters, the responsiveness of PV inverters to transient voltage dips/rises is tested to achieve the control effect that PV inverters can maintain grid-connectedness during grid voltage fluctuations.
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