Learn More
The theory of synergetic control was introduced in a power electronics context in a previous paper. In this paper we review the theory, then focus on some practical aspects with reference to both simulations and actual hardware. In particular we address management of the current limit condition and solve it with several different approaches. Adaptive and(More)
Abstract – In this paper, the authors propose an analytical method to estimate the worst case in terms of uncertainty propagation in a measurement operation. The theory is exemplified with a specific application: power measurement with a signal conditioning stage including a low-pass filter. In AC power measurement the low pass filtering affects magnitude(More)
─ Digital control systems require sophisticated testing procedures before final implementation. Recently, various procedures for rapid prototyping have been proposed. However, in many cases they focus on implementation into platforms that are different from the final target. In this paper, we focus on a testing procedure for micro-controller-based control(More)
The objective is to study the large-signal stability of switching converters operating in sliding mode or under synergetic control. Under both control approaches, the system state reaches a desired control manifold and then stays on that manifold at all times. The question of stability on the control manifold is examined, i.e., whether the system will(More)
The switching characteristics (turn-on and turn-off) and forward conduction drop of trench-gate punch-through insulated gate bipolar transistors (IGBTs) are examined over a temperature range of from -50/spl deg/C to 125/spl deg/C. An analytical description of the forward conduction voltage drop is presented based on temperature dependencies of the(More)
The rapid development of the research on gallium nitride semiconductor material and the unique properties of GaN (such as high electron mobility and saturation velocity, high sheet carrier concentration at hetero-junction interfaces, high breakdown voltages, and low thermal- impedance) make the material promising in high-power, high-temperature(More)
Fuel cells are becoming a more attractive option for many remote power applications. One of the main wellknown problems of a fuel cell system is its slow dynamic response: the fuel cell system needs significant time to reach a new steady-state condition after a load change. Notice that fuel cell dynamics, in terms of time-constants, may be in the order of(More)
Virtual prototyping of complex systems presents interesting challenges, especially with regard to systems in which some components are represented by software models and others are present as real hardware. We describe here one approach to solving such a problem. In this instance, two motors were controlled by a dSpace general-purpose controller board that(More)
The design process for a fuel-cell-based inverter system for domestic use is discussed. The peculiar characteristics of the fuel cell stack energy source require the use of a battery for buffering. The fuel cell characteristics and the battery requirements for this application are discussed. A large number of different possible solutions are examined. The(More)