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This paper introduces the design of a Marx Generator that can generate high attitude pulses up to 25 kV and 2.5 kA. The pulses have a wave shape representative of that used to test High-altitude ElectroMagnetic (HEMP) filters against the pulse current injection (PCI) requirements. The rise time is 20 ns and the pulse width is 230 ns on a 10 Ω resistor. In the design, it was found that parasitic effect...
A novel method is proposed to enhance the performance of optimization algorithms to obtain impulse generator settings. This method resolves two major problems encountered in tradition optimization-enabled electromagnetic transient simulation (OE-EMTS) approach. First, a new technique is introduced to model a transformer in an electromagnetic transient (EMT) simulator. This technique uses the frequency...
An electric brake for wind turbine systems is proposed in this paper. Effective emergency electrical braking is needed if an overvoltage occurs due to grid failure. The derived circuits use high power thyristors corresponding to the high values of generated power from today's wind turbines. A practical confirmation with BLDC a generator is ongoing in the laboratory. The principle of operation is proved...
A multioutput current-controlled current conveyor (MOCCCII)-based function generator is proposed, which provides a mixed-mode sinusoidal four-phase quadrature outputs, square and triangular voltage outputs simultaneously. The starting building block of the proposed function generator is a single output current-controlled current conveyor (CCCII)-based voltage-mode sinusoidal quadrature oscillator...
This paper presents a new structure of high speed and low power voltage-mode digital fuzzifier for digital fuzzy microcontrollers. We implement a new method voltage-mode with resistors for achieving high speed and high accuracy with low power consumption. Input signals are digital words and outputs are analog in voltage-mode. The circuit is designed and simulated using HSPICE simulator by level 49...
This paper deals with the fine tuning of high voltage circuits parameters for impulse voltage tests. The equipment involved in the test is prior subjected to a frequency domain fitting based on vector fitting (VF) and later implemented in ATP-EMTP. The simulation results are used to verify the adequacy of the actual experimental tests. Comparison between experimental and simulated setup indicate that...
The paper presents the design and implementation of input/output interface circuits, fully compatible with low-voltage differential signal (LVDS) standard. Due to the low voltage differential transmission technique, the low power consumption and high transmission speed are achieved at the same time. The transmitter is implemented by a closed-loop control circuit and an internal bandgap voltage reference,...
The presence of parasitic capacitances in the power stage of a dc-to-dc converter designed for discontinuous-mmf operation results in a ringing of the mmf during the time that the mmf is intended to be equal to zero. With a constant-frequency controller, this ringing is shown to result in a widely fluctuating small-signal loop gain for relatively small changes in operating conditions. This fluctuating...
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