This method needs a light-emitting diode to simulate solar irradiation. The photovoltaic emulator developed in consists in amplifying a photodiode I-V characteristic, which is considered as a PV cell. The reference generation could be analogue or digital in, two analogue reference generations were presented. In the literature, several methods to emulate photovoltaic panel behaviour have been studied. Recall that, those electronic power devices are able to reproduce the electrical behaviour of photovoltaic panels under controllable conditions. Photovoltaic emulators are nowadays becoming an alternative solution for indoor studying and analysing of photovoltaic systems. The results showed that the emulator was able to behave accurately as the studied photovoltaic panel. The practical tests were performed on a prototype designed using a MATLAB C MEX S-function, dSPACE board 1104, and a controlled DC/DC converter.
#High power emulator Offline
The emulator is able to operate online with connected solar radiation and temperature sensors or offline with recorded measurement vectors. The validation of the proposed emulator is carried out by comparing in real-time, both the studied panel output and the emulator output, under variable load, temperature, and irradiation levels. Furthermore, the proposed approach takes into account the incidence solar angle, as an input parameter, to offer the possibility of evaluating daily losses for different values of tilt angle. The latter requires more memory for increasing accuracy and considering all the desired environmental situations.
Typical tests are function tests, efficiency tests, endurance runs and the retracing of driving profiles.This paper presents the design and implementation of a photovoltaic emulator, based on an accurate mathematical model of a photovoltaic panel, instead of the look-up table method. The automation system controls all sub-systems including data acquisition and online evaluation. Limit values and model parameters are configured in the PAtools TX automation system. The output vector of the motor model is transmitted synchronously with 1MHz sampling frequency to the power electronics. The customer can implement his own models via MATLAB/Simulink. A proven solution based on FPGA boards is available for this purpose. Failure of sensor interfaces: Encoder, temperature sensorĮither predefined, integrated motor models or external, customer-specific models can be used.In the event of a fault, the electrical energy is quickly dissipated into the mains.įault conditions that are difficult to implement on a e-motor test bench can easily be reproduced on the DrvHIL test benches: Since there is no mechanical energy in the system, safe test conditions prevail. The occurrence and associated problems of critical speeds and mechanical resonances are eliminated. Unlike e-motor test benches, no mechanical setup of the electric motor is necessary. The test bench allows flexible testing of different traction inverters. Home page of the Test Systems business unit.
0 kommentar(er)
