Using labview to measure current up to now, youve used labview to measure voltage, but not current. Characteristic of the centertapped fullwave rectifier 3. The pwm converter is modeled using the pwm switch method. As a proven useful tool for prototyping, the labview graphical development platform delivers a numerous solutions to a wide variety of applications such as instrumentation control, embedded monitoring and control systems, data acquiring and processing, automation test and validation systems, etc. Figure 2 shows the proposed circuit diagram of energy harvesting module. Load the simulation by clicking open in editor above, and then click simulate at the bottom. Vi characteristics of diodes using labview repeat the measurement i vs. But what i get is not quite a fully rectified waveform see attachment.
Three phase full wave rectifier 1 make the circuit as shown. On your data sheet, give the truth table for the circuit. This tool allows the user to change and modify the circuit by varying its controls on front panel. Rectifier design and analysis variant values and upper case i and v represent peak or rms values, noted as used. First, students will learn theory about a diodes role in a rectifier and complete several short answer questions to confirm their understanding. Incorporating labview with traditional circuit analysis. This is most commonly used when supplying ac power from dc sources such as batteries and dc power supplies. Students will then explore how different load values affect the output signal of the rectifier as well as how to improve on the rectifier s dc output using capacitors. The rectifier design consists of choosing the circuit elements for a given output voltage and current. The trick is to insert a small resistor of known value into our circuit, then.
Simulation of rlc series and parallel resonance in basic. Single phase full wave rectifier 1 make the circuit as shown. There are several different types of diode rectifier circuit, each with its own advantages and disadvantages. In fact, the mydaq cannot directly measure current. Then, students will use labview to explore the individual components of the rectifier in order to. But well use a standard trick to make indirect current measurements. The half wave rectifier is a circuit, which converts an ac voltage to dc voltage. V i which also is v rms is the transformers secondary rms voltage measured from one end of the secondary to the center tap for fwct or across the entire secondary for fwbr. This circuit is commonly used in ac to dc converters, and consists of only six circuit elements. Rectifier circuit performance may also be compared against specified requirements. Nov, 2011 rload represents our load circuit perhaps its a linear voltage regulator, or maybe just a simple resistive load like a light bulb.
In this lab, students will explore how ac voltage is converted to dc voltage. National instruments, ni, and labview are trademarks of national. Diode rectifier circuits are one of the key circuits used in electronic equipment. Use labview to measure the vi characteristic for a zener diode, the 1n4734. National instruments, ni, and labview are trademarks of national instruments corporation. Write labview programs to display and measure ac waveforms produced by external sources. Datasheet pdf template addlink software cientifico. However, the difference between then stays relatively constant thanks to c1. The use of passive filters to reduce the harmonic content ripple of the. Multisim users receive pdf versions of the user guide and the component reference guide. The real world circuit, for example a 3phases th yristor bridge rectifier, can be represented as in figure 5.
Page 1 of 18 using labview to measure temperature with a thermistor c. The proposed topology of energy harvesting module using piezo ceramic is as shown below. Analysis of single phase rectifier circuits caltechthesis. Labview virtual instrument for modeling and control of. This lab guides students in building a fullwave bridge rectifier and in. Different characteristics of rectifier circuits, e. Figure 4 is an equivalent circuit applicable to both fwct. Diode rectifier circuits numerical problem topics covered. The output of this circuit then becomes a pulsating dc, with all of the waves of the input ac being transferred. The inverter control system is used for current and voltage control is the power converter. You should also refer to getting started with ni circuit design suite. Another type of fullwave rectifier circuit is the fullwave bridge rectifier. If the input to this rectifier is a sine wave, we find that the output is approximately that of an ideal fullwave rectifier.
Rectification is the conversion of alternating current ac to direct current dc. Make a printout of the curve and insert into your lab notebook. Introduction to labview and basic labview based electrical projects. On your data sheet, draw a circuit that would produce the output shown in table 1 from the inputs shown. The circuit is designed such that the current through the load is always in the same direction during both the half cycles. In order to simulate the circuit signal reference must be named 0 the. We see that the junction diode bridge rectifier output is very close to ideal. Ee40 lec 18ee40 lec 18 diode circuitsdiode circuits. The project assignment, entitled instrumental circuit analysis using labview, was divided into three main procedural sections. Circuit of the considered rectifier is presented in fig. Im trying to use the absolute value vi to full rectify an i16 binary waveform from a pxie5122. Introduction to labview and its usage for virtual laboratory. Process dynamics and control 2nd edition, by seborg, edgar, mellichamp, wiley 2004 labview, which stands for laboratory virtual instrumentation engineering workbench, is a graphical. It is organized based on the stages of circuit design, and explains all aspects of multisim.
The block diagram of the switching board interface. Full wave rectifier with centretapped transformer the circuit consists of a centertapped transformer, followed by the recti. Labview rectifier electrical network free 30day trial. Multisim component reference guide national instruments. Dufee, university of minnesota november, 2009 for resources, see the labview resources page on the umn me2011 course site. In this lab, students will learn about the applications of diodes in rectifiers and examine the components and operations of a fullwave rectifier. Sep 30, 2014 a new introductory circuits laboratory uses labview which enables the students to examine the series and parallel, open and short circuits, various circuit theorems like thevinens, nortons, mesh analysis, etc.
Pdf labviewbased control of a switching board for distance e. The circuit consists of a piezo ceramic, rectifier, dcdc boost converter, battery charging circuit and a storage device such as battery. Hydropower plant generator system model using labview ieee. The next topic considered is the analysis of active rectifier circuits employing a pwm pulse width modulation converter as a means to control power flow within the rectifier circuit. Multisim allows the modelling of the circuit and pwm signal, so that the required output can be generated. They can be used in switch mode power supplies and linear power supplies, rf signal demodulation, rf power sensing and very much more.
Circuits and electronics courseware national instruments. This paper develops approximate equations for designing or analyzing a fullwave bridge rectifier peakdetector circuit. The first complete handson guide to acdc circuits, machines, devices, and power electronics that does not require the use of expensive equipment makes these areas of engineering far more accessible to students, and permits them to study anywhere they have a computer. It can be used to obtain the desired level of dc voltage using step up or step down transformers. Diode rectifier circuits numerical problem youtube. They will use leds to simulate a fullwave rectifier and then build one from common 1n4005 diodes. Studying ac circuits with labview objectives write labview programs to generate ac waveforms of userspecified shape, amplitude, and frequency. Nov, 2011 this kind of circuit can be hard to think about because, if we define ground to be at the negative end of vsrc as we do here, both sides of the output of the bridge rectifier are moving with respect to ground. Labview for electric circuits, machines, drives, and laboratories. Multisim, prototype the actual circuit with ni elvis ii, and compare the.
Simulation of this parallel circuit in labview shown in figure 5 resonance curve and all result are shown in figure 6. Heres a circuit for a fairly simple variable output. A halfwave rectifier is a circuit that allows only one halfcycle of the ac voltage waveform to be applied to the load, resulting in one nonalternating polarity across it. Conclusion the idea of basic electrical engineering lab experiments simulation using labview software is being successfully put into operation at rggi, meerut, india in the department. Use labview to explore characteristics of ac circuits studied in previous electronics courses. This can be achieved using switching and control circuits to produce a signal of the required amplitude and frequency. Using labview to measure temperature with a thermistor. Design of piezoelectric energy harvesting and storage devices. These diodes actions during each half cycle of the applied ac input voltage are shown in figure 8. Circuits and electronics introduce and reinforce circuits and electronics concepts with courseware covering topics in introductory circuit analysis, analog and digital electronic circuits, microelectronics, and more. You can use ni elvismx instruments in ni multisim to simulate a circuit, measure the real. The diodes are chosen based on the maximum value of the medium current in. The effects on the rectifier behaviour of the inductive components of the load and of the ac line will be investigated. Fullwave bridge rectifier circuit connected to analog discovery 2.
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