Research on a Novel Digital Photovoltaic Array Simulator

Zhang, Housheng; Zhao, Yanlei

doi:10.1109/icicta.2010.141

Cited by 13 publications

(3 citation statements)

References 6 publications

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“…In a similar manner, the design of a power supply that is highly immune to the high dv/dt at the output of the NSE can be found in [47]- [50]. Other references relevant to this paper can be found in [54]- [63].…”

Section: A Proposed System Schematicmentioning

confidence: 99%

High Dynamic Performance Nonlinear Source Emulator

Nguyen-Duy¹,

Knott²,

Andersen³

2016

IEEE Trans. Power Electron.

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As research and development of renewable and clean energy based systems is advancing rapidly, the nonlinear source emulator (NSE) is becoming very essential for testing of maximum power point trackers or downstream converters. Renewable and clean energy sources play important roles in both terrestrial and nonterrestrial applications. However, most existing NSEs have only been concerned with simulating energy sources in terrestrial applications, which may not be fast enough for testing of nonterrestrial applications. In this paper, a high-bandwidth NSE is developed that is able to simulate the behaviors of a typical nonlinear source under different critical conditions that can happen during their operations. The proposed 200-W NSE, which consists of a fourth-order output filter buck converter and a novel nonlinear small-signal reference generator, can quickly react not only to an instantaneous change in the input source but also to a load step between nominal and open circuit. Moreover, all of these operation modes have a very fast settling time of only 10 μs, which is hundreds of times faster than that of existing works. This attribute allows for higher speed and a more efficient maximum power point tracking algorithm. The proposed NSE, therefore, offers a superior dynamic performance among devices of the same kind.

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Section: A Proposed System Schematicmentioning

confidence: 99%

High Dynamic Performance Nonlinear Source Emulator

Nguyen-Duy¹,

Knott²,

Andersen³

2016

IEEE Trans. Power Electron.

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“…Principle: [1] The voltage transducer gives the output voltages of different loads.The system output voltage and current is passed by the PI regulator tracking voltage command to control the duty ratio of the PWM wave or the trigger delay time,as a result of which the main circuit is regulated and the output current and voltage appear in the I-V curve. [3] In order to promote the response time as well as reduce the steady-state error,our design introduces the PI controlment in feedback. In order to make the negative feedback of voltage and current function independently, the current and voltage regulator , are set in the system.The two regulators are in a series.…”

Section: Design Of the Control Systemmentioning

confidence: 99%

Research on the Design and Simulation of Photovoltaic Cell Array Simulator Circuit

Liu

Zhao

Shu

2013

AMM

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Based on the theoretical analysis of solar cell,a kind of photovoltaic cell simulator’s main circuit and relevant control system are designed.What’s more,the simulation model is build up under the solar cell array simulator by Simulink.We also carry out researches as well as simulation analysis with regard to its working conditions with resistance loaded. In the end , the analysis of the simulation’s outcome confirms the correctness of our designed circuit and model .

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“…Another disadvantage of emulators using look-up-tables is that the I-V characteristic of the module, between two successive points stored in the look-up-table, is obtained by linear interpolation, which makes the system less accurate than the mathematical model-based approach. In contrast, emulators based on the resolution of a mathematical model of the PV module are more accurate and do not require a large amount of memory [22]. However, in order to obtain a detailed representation of the I-V characteristic, the mathematical model will contain high order equations, leading to an increase in computational time and thus to a slower system.…”

Section: Introductionmentioning

confidence: 99%

Simple and Low-Cost Photovoltaic Module Emulator

et al. 2019

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The design and testing phase of photovoltaic (PV) power systems requires time-consuming and expensive field-testing activities for the proper operational evaluation of maximum power point trackers (MPPT), battery chargers, DC/AC inverters. Instead, the use of a PV source emulator that accurately reproduces the electrical characteristic of a PV panel or array is highly desirable for in-lab testing and rapid prototyping. In this paper, we present the development of a low-cost microcontroller-based PV source emulator, which allows testing the static and dynamic performance of PV systems considering different PV module types and variable operating and environmental conditions. The novelty of the simple design adopted resides in using a low-cost current generator and a single MOSFET converter to reproduce, from a fixed current source, the exact amount of current predicted by the PV model for the actual load conditions. The I-V characteristic is calculated in real-time using a single diode exponential model under variable and user-selectable operating conditions. The proposed method has the advantage of reducing noise from high-frequency switching, reducing or eliminating ripple and the demand for output filters, and it does not require expensive DC Power source, providing high accuracy results. The fast response of the system allows the testing of very fast MPPTs algorithms, thus overcoming the main limitations of state-of-art PV source emulators that are unable to respond to the quick variation of the load. Experimental results carried on a hardware prototype of the proposed PV source emulator are reported to validate the concept. As a whole result, an average error of ±1% in the reproduction of PV module I-V characteristics have been obtained and reported.

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Research on a Novel Digital Photovoltaic Array Simulator

Cited by 13 publications

References 6 publications

High Dynamic Performance Nonlinear Source Emulator

High Dynamic Performance Nonlinear Source Emulator

Research on the Design and Simulation of Photovoltaic Cell Array Simulator Circuit

Simple and Low-Cost Photovoltaic Module Emulator

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