研究目的
To develop a hybrid simulation and real-time test platform for control systems of photovoltaic inverters with integrated battery energy storage, enabling safe and cost-effective testing of various battery technologies and energy management systems.
研究成果
The proposed test platform effectively emulates PV+BES systems, demonstrating that a full-bridge grid-connected inverter can serve as a battery emulator for various technologies and models. It offers flexibility, cost savings, and safety advantages over real systems, with future work needed for dynamic real-life mission profiles.
研究不足
The system may have constraints in emulating very fast charge/discharge profiles due to DC-link capacitance requirements, and it relies on accurate battery models which might not capture all real-world complexities. Electrical safety and cost issues with high-power components are mitigated but not eliminated in emulation.
1：Experimental Design and Method Selection:
The platform uses a dual-stage single-phase PV inverter system DC coupled with a full-bridge grid-connected inverter to emulate the charge regulator and battery bank. Real-time control is implemented using Simulink/dSpace, with battery models for simulation and emulation.
2：Sample Selection and Data Sources:
PV input is provided by a high-performance PV emulator or a physical PV array; battery models include Li-Ion and Lead Acid types based on empirical data.
3：List of Experimental Equipment and Materials:
Includes Danfoss VLT-FC302 inverters, dSpace 1103 controller board, Texas Instruments TMS320F335 DSP, Regatron PV simulator, LC filters, transformers, and various battery models.
4：Experimental Procedures and Operational Workflow:
Tests involve power smoothing, battery model comparison, and technology analogy under controlled irradiance and temperature profiles, with data collection on power flow and state of charge.
5：Data Analysis Methods:
Analysis of power flow, dynamic response, and SOC estimation using simulation and experimental data to validate emulator performance.
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