A tabu search based optimal voltage regulation method aimed to improve the voltage profiles in distribution networks by adjusting the transformer taps and shunt capacitors is presented. Similar to emf method oc and sc characteristics are used for the determination of regulation by mmf method. One of the most effective power management techniques, dynamic voltage. Devices tested include optoelectronics, digital, analog, linear bipolar devices, and hybrid devices. Different types of voltage regulators with working principle a voltage regulator is used to regulate voltage levels. Evans computer sciences corporation, huntsville, alabama prepared for marsha11 space flight center under contract nas860000 and sponsored by the space environments and effects program managed at the marshall space flight center march 1998. If the reader wishes to make a requirements document, the basic requirements include. Inspite of these short comings, due to the simplicity of constructions the asa modified from of m. Methods to determine voltage regulation of alternator. Lam, member, ieee, alejandro domnguezgarca,member, ieee, and david tse, fellow, ieee. Mmf method for determining voltage regulation of alternator. Voltage regulator application on rur usda rural development. The decrease in v be reduces conduction through the pass transistor. The simulation results show that using these two methods, the voltage profile could be improved, power losses reduced and the power factor.
The proposed method is validated against conventional rulebased autonomous voltage regulation avr on the highlyunbalanced ieee 37. Voltage regulation is achieved by varying the ratio of ontooff time also known. Index terms displacement damage, optoelectronics, proton. If load resistance increases, load voltage also increases.
A survey of requirements, methods, and specifications r. High voltage engineering techniques for space applications nasa. A switchedmode power supply is an electronic power supply that incorporates a switching. The voltage where the output actually falls out of regulation called the dropout voltage will probably be somewhere between 1. Using the details it is possible determine the regulation. Voltage regulation of a synchronous generator direct. Transistor series regulator since q 1 is an npn transistor, v o is found as. The transient performances of a voltage regulator and a parasitic speed controller on. Optimal voltage regulation of unbalanced distribution networks. Frequency scaling dvfs, involves adaptively adjusting the supply voltage and clock. The indirect method is further classified as synchronous. They are named as direct load test method and indirect methods of voltage regulation.
Mmf method is used for determining the voltage regulation of an alternator or synchronous generator is also called ampere turns method or rotherts mmf method. Modeling and analysis of a new voltage regulation method. For any synchronous generator or alternator, mmf is required, which is a. Abstractthis paper addresses the problem of voltage regulation in power distribution networks with deeppenetration of. Linear and switching voltage regulator fundamental part 1. This mmf method is based on the results of open circuit test and short circuit test on an alternator. An optimal and distributed method for voltage regulation in power distribution systems baosen zhang, member, ieee, albert y. To calculate voltage regulation of synchronous machine by m. Since the zener voltage is constant, the increase in v o causes v be to decrease. Droop control method for load share and voltage regulation. Determine whether or not the mission passes through or stays in.
As we saw in a few spice analyses earlier in this chapter, the output voltage of a transformer varies. In this method both the reactance drops are replaced by their equivalent mmfs. Pdf optimal voltage regulation in distribution system. Abstractthis paper addresses the problem of voltage regu lation in power distribution networks with deeppenetration of distributed energy.
Voltage regulation of a synchronous generator the voltage regulation of a synchronous generator is the rise in voltage at the terminals when the load is reduced from full load rated value to zero, speed and field current remaining constant. Instrumentation laboratory for nasas ambitious moon missions 19661972. Figure shows the complete phasor diagram for the mmf method. When a steady, reliable voltage is needed, then the voltage regulator. Droop control method for load share and voltage regulation in high voltage microgrids zhikang shuai1, shanglin mo1, jun wang1, z. Abstract vulnerability of a variety of candidate spacecraft electronics to total ionizing dose and displacement damage is studied. Different types of voltage regulator and working principle. Voltage regulation of alternator by mmfampere turn method.
In this method also it is assumed that the magnetic circuit is unsaturated. Which method for finding percentage regulation is called pessimistic method. Transient characteristics of a voltage regulator and a. Voltage regulation of alternator and solved example youtube. Methods to determine voltage regulation of alternator q1. The dropout voltage of the standard regulator is the highest worst of the three types. In electrical engineering, particularly power engineering, voltage regulation is a measure of change in the voltage magnitude between the sending and receiving. Voltage regulation and power loss minimization in radial. Voltage regulation transformers electronics textbook. Request pdf on aug 1, 2018, yongjie wang and others published modeling and analysis of a new voltage regulation method for surfacemounted permanent magnet synchronous generator. An optimal and distributed method for voltage regulation in.
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