Digital control of universal telecommunication power supplies using dual 8-bit microcontrollers

Kutluay, K
Cadirci, I
Yafavi, A
Cadirci, Y
Design and implementation of a digital controller for universal telecommunication power supply modules are presented. The paper emphasises on converter control strategy, and its implementation by means of parallel operated, dual 8-bit microcontrollers. One of the microcontrollers is employed for user interface purposes, such as long term records, display and alarm facilities, which are inherently slow processes. The fast processing speed required by output voltage setting, current limit, and load current sharing however, is fulfilled by the second microcontroller, which adjusts the output voltages of modules. The proposed dual-processor based digital controller provides an extended operating output voltage range, user programmable current limit setting, serial-communi cation based active load current sharing between modules, and automatic derating without extra hardware requirement. Overload and output short-circuit protection features are also software-controlled. The controller is tested successfully on six parallel operating, 1.8 M, 0-70V telecommunication power supplies.


Real-time hardware-in-the-loop simulation of electrical machine systems using FPGAs
Üşenme, Serdar; Dilan, R.A.; Dölen, Melik; Koku, Ahmet Buğra (2009-11-18)
This study focuses on the development an integrated software and hardware platform that is capable of performing real-time simulation of dynamic systems, including electrical machinery, for the purpose of hardware-in-the-loop simulation (HILS). The system to be controlled is first defined using a block diagram editor. The defined model is then compiled and downloaded onto an FPGA (¿Field Programmable Gate Array¿) based hardware platform, which is to interface with the controller under test and carry out the...
Output voltage control of a four-leg inverter based three-phase ups by means of stationary frame resonant filter banks
Demirkutlu, Eyyüp; Hava, Ahmet Masum; Department of Electrical and Electronics Engineering (2006)
A method for high performance output voltage control of a four-leg inverter based three-phase transformerless UPS is proposed. Voltage control loop is employed and the method employs stationary frame resonant filter controllers for the fundamental and harmonic frequency components. A capacitor current feedback loop provides active damping and enhances the output voltage dynamic performance. The controller design and implementation details are given. Linear and nonlinear loads for balanced and unbalanced loa...
Multi-DSP and -FPGA-Based Fully Digital Control System for Cascaded Multilevel Converters Used in FACTS Applications
Atalik, Tevhid; Deniz, Mustafa; Koc, Erkan; Gercek, Cem Ozgur; Gultekin, Burhan; Ermiş, Muammer; ÇADIRCI, IŞIK (2012-08-01)
In this paper, a fully digital controller based on multiple digital signal processor (DSP) and field-programmable gate array (FPGA) boards has been proposed for parallel-operated cascaded multilevel converters (CMC) used in flexible AC transmission system (FACTS) applications. The proposed system is composed of a DSP-based master controller in combination with a multiple number of slave DSP boards, FPGA boards, microcontrollers, a programmable logic controller (PLC), an industrial computer, and their periph...
Active vibration control of a smart beam : a spatial approach
Kırcalı, Ömer Faruk; Yaman, Yavuz; Department of Aerospace Engineering (2006)
This study presented the design and implementation of a spatial Hinf controller to suppress the free and forced vibrations of a cantilevered smart beam. The smart beam consists of a passive aluminum beam with surface bonded PZT (Lead-Zirconate-Titanate) patches. In this study, the PZT patches were used as the actuators and a laser displacement sensor was used as the sensor. In the first part of the study, the modeling of the smart beam by the assumed-modes method was conducted. The model correction techniqu...
YILDIZ, Ayhan Sefa; Schmidt, Şenan Ece; Department of Electrical and Electronics Engineering (2022-2-9)
In this thesis, an on-chip packet switch architecture to interconnect modules on System on Chip (SoC) platforms at high line speeds is proposed. The particular target application for the proposed on-chip switch is hardware accelerated cloud computing systems. To this end, FPGA Accelerator Cards (FAC) are employed in heterogeneous cloud data centers which implement hardware accelerators on the FPGA. The data from the cloud user is brought on the accelerators and delivered after processing through high-speed ...
Citation Formats
K. Kutluay, I. Cadirci, A. Yafavi, and Y. Cadirci, “Digital control of universal telecommunication power supplies using dual 8-bit microcontrollers,” 2002, p. 1197, Accessed: 00, 2020. [Online]. Available: