DocumentCode :
2485513
Title :
Application of microcontrollers to control HVDC converters
Author :
Barrera-Cardiel, Edmundo
Author_Institution :
Escuela de Ingenieria Electr., Univ. Michoacana de San Nicolas de Hidalgo, Mexico
fYear :
1993
fDate :
16-19 Aug 1993
Firstpage :
164
Lastpage :
175
Abstract :
The author presents the design of the hardware and software of the AC/DC converter controllers for an HVDC transmission system. The structure of the converter controllers is based on a 16-b microcontroller. The microcontroller includes the facilities needed to support fast real-time control in a single chip. The main functions included in the terminal controllers are the control of the firing instants of the bridge valves, the control of the transformer tap changer, and the monitoring of the signals needed for the control and study of the HVDC transmission system. One of the special features of this controller is that, with the use of the high-speed input/output system of the microcontroller, the precision to detect input pulses and to output thyristor firing signals is not affected by the corresponding latency in the response of the CPU to the interrupts. This work contains the details of the design of the AC and DC voltage and current transducers, the thyristor conducting state detectors, the thyristor gating circuits, the microcontroller expansion interface, and the software of the terminal controllers. This design was tested on an HVDC transmission system model. Experimental results are also presented here
Keywords :
AC-DC power convertors; HVDC power convertors; HVDC power transmission; microcontrollers; power system control; real-time systems; thyristor convertors; transducers; AC voltage transducer; AC/DC converter controllers; DC voltage transducer; HVDC converter control; HVDC transmission system; bridge valves; current transducers; firing instants control; hardware; high-speed input/output system; microcontroller expansion interface; microcontrollers; output thyristor firing signals; real-time control; signals monitoring; software; terminal controllers; thyristor conducting state detectors; thyristor gating circuits; transformer tap changer; Application software; Bridge circuits; Control systems; DC-DC power converters; HVDC transmission; Hardware; Microcontrollers; Monitoring; Thyristors; Valves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Congress, 1993. Technical Proceedings. CIEP 93., 2nd International
Conference_Location :
Cuernavaca
Print_ISBN :
0-7803-1405-0
Type :
conf
DOI :
10.1109/CIEP.1993.379466
Filename :
379466
Link To Document :
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