DocumentCode :
3407979
Title :
Design & development of microcontroller based programmable ramp generator for AC-DC converter for simulating decay power transient in experimental facility for nuclear power plants
Author :
Srivastava, G.D. ; Kulkarni, R.D.
Author_Institution :
Reactor Eng. Div., Bhabha Atomic Res. Centre, Mumbai, India
fYear :
2015
fDate :
9-10 Jan. 2015
Firstpage :
1
Lastpage :
6
Abstract :
In nuclear power plants, fuel is subjected to a wide range of power and temperature transients during normal and abnormal conditions. The reactor setback and step-back power pattern, fast temperature profile occurred during Loss of Coolant Accident and decay power followed by shutdown of power plant are the typical transients in nuclear power plant. For a variety of reactor engineering and reactor safety related study, one needs to simulate these transients in experimental facility. In experimental facilities, high response AC-DC converters are used to handle these power and temperature transients safely in a controlled manner for generating a database which is utilized for design of thermal hydraulic system, development of computer codes, study of reliability of reactor safety system, etc. for nuclear power plants. The paper presents the methodology developed for simulating the typical reactor decay power transient in an experimental facility. The design and simulation of AC-DC power electronic converter of 3 MW capacity is also presented. The microcontroller based programmable ramp generator is designed & hardware implemented for feeding reference voltage to the closed loop control system of AC-DC converter for obtaining the decay power profile at the converter output. The typical decay power transient of the nuclear power plant is divided into several small power ramps for simulating the transient. The signal corresponding to each power ramp is generated by programmable ramp generator and fed to the comparator for generating control signal for the converter. The actual decay power transient obtained from the converter is compared with the theoretical decay power transient.
Keywords :
AC-DC power convertors; closed loop systems; fission reactor safety; hydraulic systems; microcontrollers; nuclear power stations; power generation control; power generation reliability; power system transients; ramp generators; AC-DC power electronic converter; closed loop control system; comparator; computer codes; control signal generation; decay power profile; microcontroller based programmable ramp generator; nuclear power plant; power 3 MW; reactor decay power transient; reactor engineering; reactor safety system; reactor setback pattern; reliability; step-back power pattern; temperature profile; temperature transients; thermal hydraulic system; Generators; Inductors; Microcontrollers; Power generation; Safety; Thyristors; Transient analysis; Decay power transient; converter; microcontroller; nuclear power plant; ramp generator;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nascent Technologies in the Engineering Field (ICNTE), 2015 International Conference on
Conference_Location :
Navi Mumbai
Print_ISBN :
978-1-4799-7261-6
Type :
conf
DOI :
10.1109/ICNTE.2015.7029912
Filename :
7029912
Link To Document :
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