Researchers have developed a PV source emulator \u2013 a power converter delivering current and voltage with the same behavior as those generated by PV panels \u2013 which they say can evaluate the\u00a0I-V profile of solar modules\u00a0independent of atmospheric conditions.<\/p>\n\n\n\n

Scientists at\u00a0Morocco\u2019s Hassan I University have described their non-linear power electronic device\u00a0in the paper\u00a0Real-time emulation of photovoltaic energy using adaptive state feedback control, published in\u00a0SN Applied Sciences<\/em>.<\/p>\n\n\n\n

The researchers claim their device can perform module measurements at desired weather parameters without any time, space or cost constraints.<\/p>\n\n\n\n

The new emulator is based on a state-feedback adaptive control system which can regulate current and voltage of the circuit and track the I\u2013V characteristic of a PV module. The feedback control was implemented in a real-time controller as a hardware dSpace card.<\/p>\n\n\n\n

Accuracy<\/strong><\/p>\n\n\n\n

\u201cThe given experimental results showed that the proposed PV emulator can achieve a good dynamic response and have a better bandwidth compared to the existing commercial PV emulators [which are] based on programmable power supply,\u201d the research team stated.<\/p>\n\n\n\n

The developers claim the accuracy of their emulator was unaffected by changes in the resistance load and, as a consequence, of the operating point of the system.<\/p>\n\n\n\n

\u201cIt has been proven that the realized power circuit can sweep the whole I\u2013V curve for different values of solar irradiance and temperature,\u201d the researchers stated. The developers now want to work on the emulator\u2019s ability to track partial shading conditions, among other improvements, to bring their innovation nearer commercial production.<\/p>\n\n\n\n

A study published last month\u00a0attempted to evaluate the accuracy of the\u00a0mathematical models\u00a0which are used in the PV industry and research to assess the performance of solar modules under varying environmental conditions such as irradiance and temperature.<\/p>\n\n\n\n

From: https:\/\/www.pv-magazine.com\/2020\/03\/02\/a-new-pv-emulator-to-evaluate-the-i-v-profile-of-solar-panels\/<\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"

The device is based on a state-feedback adaptive control system in a real-time controller. According to its developers, it can achieve good dynamic response and boasts better bandwidth than current commercial alternatives. Researchers have developed a PV source emulator \u2013 a power converter delivering current and voltage with the same behavior as those generated by…
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