Digital phase angle meter pdf free

Phase angle measurement using pic microcontroller with. The multiple adder has m inputs each of which is connected to the output of one of the xor gates g1 to gm, and delivers an nbit output signal. Pdf microcontroller based digital power factor and phase. Phaseangle measurement encyclopedia the free dictionary. It is an ideal choice for electric power bureau, factories, mine, petroleumchemistry enterprises, metallurgy factories and so on. The free running frequency of the voltage controlled oscillator is determined by. Such meters measure the time interval between the instants when the. Digital phase angle meters have almost replaced the analog type because of its. Portable meters digital phase angle meter uma electronics. The importance of measuring phase angle between two sinusoidal waves of same frequency is useful for control system, robotics, communication, medical instruments, power system etc.

This paper deals with the development of an electronic power factor and phase angle meter using pic microcontroller. Digital phase angle meter shows phase angle between any two phases of voltagecurrent phase of voltagecurrent can be selected true rms readngs download. Gf211b multifunction onsite handheld digital phase angle meter gf211b multifunction double clamp digital phase angle meter is a multifunctional portable instrument. This voltage is then displayed on a panel meter analog or digital suitably. The input signal of each input is filtered to minimize the harmonic distortion that may be present. Turgel national bureau of standards gaithersburg, md 20899 to provide a phase meter calibration service, a phase angle calibration standard has been developed at nbs. The digital phase meter circuit in accordance with the invention further includes the multiple adder ma, which is implemented to advantage in the known tree structure carrysave adder. Phase angle voltmeters since the development of the first phase angle voltmeter pav over 50 years ago, north atlantic industries has been the industry leader in ac measurement instrumentation. The design and application of an electronic phase angle meter. The design is based on generating two signal values, the first is proportional to the peak value i m of the line current it, the. The vector impedance meter is employed for measuring both the amplitude and phase angle of impedance z. The phase difference between two sinusoidal waveforms that have the same.

Laureate ac power factor meter ac phase angle meter. The power is singlethree phase system cannot be measured without measuring the phase angle between voltage and current using a microcontroller, a boon of very large scale integrated technology. The above drawing shows a simple single phase motor circuit, which contains a. The authors simulated the whole electronic circuit in proteus circuit simulation tool. If all due care is taken during construc tion, an accuracy of within 0. The model 175a digital phase angle meter operates by measuring the elapsed time between the zero crossover of input 2 versus input 1. Overview of the complete digital phase angle meter circuit. The two square waves are compared by the logic circuit. Multifunction onsite handheld digital phase angle meter.

It is an essential element of the phaselocked loop pll detecting phase difference is very important in many applications, such as motor control, radar and telecommunication systems, servo. Phase angle in degrees indicates the phase lead or lag between two periodic. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Electronic counters are used as phaseangle meters for a wide range of frequencies. As illus trated in figure 2, this flipflop produces output.

Connect pam360 inputs u1 and i2 to the testing unit sverker for. Phase meter calibration at nbs volume 93 number i januaryfebruary 1988 raymond s. Pdf development of a digital phase angle meter researchgate. It can indicate leading or lagging phase through a leadlag indicator circuit. Laureate ac power factor meter ac phase angle meter laurel. Based on microprocessor technology, the pme20ph is an instrument designed mainly as a phase angle meter, although other parameters, such as frequency and power factor can be measured. Portable three phase multifunction digital phase angle. Phase meter definition of phase meter by the free dictionary. Impedance, which is having both magnitude and phase, is truly an opponent to the flow of current in ac circuits with the presence of an applied voltage. Its metric division class makes it suitable for petroleum, railways and the iron and steel industries also. Normally, in other measuring techniques of impedance, the individual values of resistance and reactance are obtained in rectangular form. The two input signals, a and b, are fed to an rs flipflop consisting of nand gates n1. Our name has become synonymous with innovation and quality. Simple phase meter operates to 10mhzha5024, hfa3102 application note an9637 rev 1.

Development of a digital phase angle meter semantic scholar. N4ic174s00 phase meter this circuit can be used for accurate phase measurements up to 1 mhz. It is simple to use, but there is a problem in under standing its readings. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator, and other home appliances. The instrument has an analogic scale that enables it to be used as a synchroscope. A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a voltage signal which represents the difference in phase between two signal inputs. Simple phase meter operates to 10mhz ha5024, hfa3102. Download scientific diagram overview of the complete digital phase angle meter circuit. The filtered sine wave is then converted to a square wave.