PV Inverter Testing

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.

Related Customers

Chintpower Technology R&D Department

ModelingTech Real-Time Simulator is an HIL simulation platform which is reliable,accuracy and easy to use.It is an important part for our test platform which at the same level as the Electric Power Research Institute .By using this simulator,plenty of problems have been solved and lots of test include L/HVRT test and impedance analysis which are difficult to retest on physical test platforms have been accomplished.Compared with physical test platform,HIL test is more efficient,timeliness have been greatly improved.At the same time,the difficulty of test result storage ,management and analysis got a significantly reduce.What make us more satisfied is the customer service and technical support of ModelingTech.Rapidly response ,patient guidance and several times on-site training,not only solve all the problem during test,increase test efficiency,but also cultivate more excellent HIL simulation engineers,improve the overall strength of our R&D team.

固德威

正泰

瑞能

东方电气

大唐

东方日升

为恒智能

海得

华能

"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。"

四方继保

System Schemes

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.

Related Products

StarSim FPGA Circuit RonRoff Solver

For running power electronics models
Based on RonRoff modeling

StarSim FPGA Circuit RonRoff Solver

Explore More

StarSim FPGA Circuit Solver

Core software for running power electronics models on FPGA

StarSim FPGA Circuit Solver

Explore More

StarSim HIL

PC-based software for real-time simulation systems

StarSim HIL

Explore More

MT 8020 Simulator

New Power Supercomputing
Platform

MT 8020 Simulator

Explore More

Technical Features

Superb FPGA Simulation Capabilities

1us step can simulate 3-5 PV inverter systems; equipped with the hybrid modelling method of LC and RonRoff, adapting to a variety of application scenarios from low-frequency to high-frequency.

Specialised hardware IO interfaces and industrial communications

Support high speed and wide voltage range (-25V, 25V) digital input, adapted to industrial inverter controller interface; support MODBUS TCP, MODBUS RTU, CAN, serial port and other professional power communication protocols, convenient to achieve information interaction with the controller.

Powerful device parallel expansion capability

Support up to 8 sfp fibre-optic signal modules, can easily achieve physical IO expansion or multi-device parallel simulation, to meet the requirements of multi-PV inverter system testing.

HIL platform add-ons

Provide professional automation test Python API, convenient for industrial users to develop automation test project; support “HIL Scope” high-speed recording function, can achieve 500k sampling rate for multi-channel waveform observation.

Testing Item

01Broadband oscillation impedance characteristic testing
02Inverter anti-islanding protection testing
03Output electric power quality and efficiency testing
04Frequency disturbance testing
05HV/LV ride-through

Broadband oscillation impedance characteristic testing

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.

Inverter anti-islanding protection testing

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.

Output electric power quality and efficiency testing

Test the inverter output power factor, harmonic distortion rate, DC component and other parameters to meet the grid connection standard.

Frequency disturbance testing

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.

HV/LV ride-through

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.