EPE Association: EPE 1997 â€“ 55: Dialogue Session DS4f: CONVERTER CONTROL

EPE 1997 â€“ 55: Dialogue Session DS4f: CONVERTER CONTROL - MISCELLEANOUS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 â€“ 55: Dialogue Session DS4f: CONVERTER CONTROL - MISCELLEANOUS

   [return to parent folder]

   POWER ELECTRONIC CONTROL SYSTEM SIMULATION WITH PARALLEL INFERENCE MACHINE (PIM)
By Jumpei BABA; Eisuke MASADA; Minoru TAMURA [View]
[Download]

Abstract: For the dynamic simulation of the control system with power converters, it is proposed a novel scheme with the parallel inference machine, which emulates a parallel-computing machine with several hundreds of processors. Utilizing its para-cell soft-ware, the simulation can be realized with a multi-layered structure, which is convenient to separately describe controllers, converters and plants. The authors examine PI:V1 simulator for two cases: the one is HVDC system and the other is SMES system. Simulation results were compared with analog emulator or other simulating method. It was concluded that power electronics control system simulation can be made on PIM but there arc some difficulty in this PIM version. After upgrading the program, not only circuit simulator but also combination of dynamical system simulators will be possible to be used.

   THERMAL MONITORING OF INTEGRATED POWER ELECTRONICS: NEW CONCEPT
By W. Wojciak; M. Janicki; M. Zubert; A. Napieralski [View]
[Download]

Abstract: This paper presents methods for monitoring of IC temperature. Firstly, an idea of gradient direction sensor (GDS) which in the simplest case consists of three sensors properly placed and transforming signals from measured domain to the electrical ones is presented. Obtained voltage values give (after computing) the information about gradient direction of measured quantity, and its absolute value. In the first approach we focus on the implementation of GDS to the temperature measurement of single heat source placed on the surface of semiconductor device. We propose an arrangement of a few GDS in order to detect the presence of single heat source on the surface of! C. In the next method density of power dissipated in heat sources and the structure temperature are estimated solving an inverse problem. For the calculations, the data read from temperature sensors and information about heat sources position are given. An example verifying the method is included.

   THE USE OF METHODS STUDYING CHAOS TO ANALYZE A CURRENT MODE PULSE WIDTH MODULATION H-BRIDGE
By D. Carton; B. Robert; M.C. Pera; C. Goeldel [View]
[Download]

Abstract: This paper describes a complex system using methods studying chaos. The system is a H-bridge with its control loop and a nonlinear modulator. We use Feigenbaum's diagram, recurrence equation and its fixed points, Lyapunov's exponents and spectra. In the case of system with transcendental equations and numerical simulations we analyze advantages and drawbacks of each approach.

EPE 1997 â€“ 55: Dialogue Session DS4f: CONVERTER CONTROL - MISCELLEANOUS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 â€“ 55: Dialogue Session DS4f: CONVERTER CONTROL - MISCELLEANOUS
	[return to parent folder]

	POWER ELECTRONIC CONTROL SYSTEM SIMULATION WITH PARALLEL INFERENCE MACHINE (PIM) By Jumpei BABA; Eisuke MASADA; Minoru TAMURA	[View] [Download]
Abstract: For the dynamic simulation of the control system with power converters, it is proposed a novel scheme with the parallel inference machine, which emulates a parallel-computing machine with several hundreds of processors. Utilizing its para-cell soft-ware, the simulation can be realized with a multi-layered structure, which is convenient to separately describe controllers, converters and plants. The authors examine PI:V1 simulator for two cases: the one is HVDC system and the other is SMES system. Simulation results were compared with analog emulator or other simulating method. It was concluded that power electronics control system simulation can be made on PIM but there arc some difficulty in this PIM version. After upgrading the program, not only circuit simulator but also combination of dynamical system simulators will be possible to be used.

	THERMAL MONITORING OF INTEGRATED POWER ELECTRONICS: NEW CONCEPT By W. Wojciak; M. Janicki; M. Zubert; A. Napieralski	[View] [Download]
Abstract: This paper presents methods for monitoring of IC temperature. Firstly, an idea of gradient direction sensor (GDS) which in the simplest case consists of three sensors properly placed and transforming signals from measured domain to the electrical ones is presented. Obtained voltage values give (after computing) the information about gradient direction of measured quantity, and its absolute value. In the first approach we focus on the implementation of GDS to the temperature measurement of single heat source placed on the surface of semiconductor device. We propose an arrangement of a few GDS in order to detect the presence of single heat source on the surface of! C. In the next method density of power dissipated in heat sources and the structure temperature are estimated solving an inverse problem. For the calculations, the data read from temperature sensors and information about heat sources position are given. An example verifying the method is included.

	THE USE OF METHODS STUDYING CHAOS TO ANALYZE A CURRENT MODE PULSE WIDTH MODULATION H-BRIDGE By D. Carton; B. Robert; M.C. Pera; C. Goeldel	[View] [Download]
Abstract: This paper describes a complex system using methods studying chaos. The system is a H-bridge with its control loop and a nonlinear modulator. We use Feigenbaum's diagram, recurrence equation and its fixed points, Lyapunov's exponents and spectra. In the case of system with transcendental equations and numerical simulations we analyze advantages and drawbacks of each approach.