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A new current-mode four-phase quadrature oscillator circuit using a single modified current controlled current conveyor transconductance amplifier (MCCCCTA) and two grounded capacitors is presented. The oscillator provides four current outputs with 90° phase difference from high output impedance terminals. The condition of oscillation and the frequency of oscillation can be electronically and orthogonally...
This paper presents the concept of the current follower transconductance amplifier (CFTA) with current gain controllable. The newly modified element is a combination of the current follower, the variable gain current mirror, and the balance output transconductance amplifier. The advantage of the proposed element is that the current transfer characteristics (iz/iƒ and ix/iz) can be electronically tuned...
This paper proposes a three-level full-bridge ZVZCS converter with ZVS turn on and ZCS turn off conditions using a simple auxiliary circuit on secondary side. The primary current is reset in order to reduce circulating current in transformer and voltage stress and spike voltage of diode bridge rectifier on secondary side. The control strategy uses double phase-shift PWM to control output voltage....
Proportional integral-derivative (PID) control is one of method to use in the control system or feedback control. In this paper presents the optimum output of controller by used the fractional-order PIλDμ is verified on the operational transconductance amplifier (OTA) analogue circuit. The method of approximation function and circuit design are presneted and shown simple of fraction-order PIλ Dμ design...
Effects of 3-kJ.kg−1 nanosecond pulsed electric fields on activities of Salmonella enterica and Staphylococcus aureus were observed through batch treatment experiments. The results showed different responses in bacterial inactivation depending on pulse durations (30 and 500 ns) and bacterial strains. The response to longer pulse treatments of S. enterica showed a higher significance in bacterial inhibition...
A dc to dc multilevel modular capacitor clamped converter (M2C3) with electrical grounding isolation and bidirectional power flow for a dc microgrid application is proposed in this paper. The principle of this particular M2C3 is based upon volt-sec balance of capacitors connected as a modular cell in the circuit so that the M2C3 can be similarly operated as a dc transformer. The M2C3 can be interfaced...
In this paper, the independent rise and fall edge dead time generator for switching control signal is presented. The scheme of the proposed circuit is based on the monostable multivibrator circuit together with the toggle circuit that use JK flip-flop to operate, OR Gate, AND Gate and NOT Gate. The obtained results from simulation and experiment affirm that the dead time at rise and fall edge of switching...
Renewable energy sources are gaining more and more interest because they are sustainable and nonpolluting. Although renewable energy is useful, it can cause voltage violation due to its uncertainty in power output. In this paper, a solution method has been proposed to coordinate dispatchable Distributed Generation (DG) with voltage control devices for optimally regulating voltage profile by using...
This paper proposes a new soft switching high step-up DC-DC converter .The proposed converter is a kind of quadratic boost converter with the coupled inductor. The converter provides high step-up voltage gain with proper duty ratio and low switch voltage stress. Additionally, the stored energy in the leakage inductor of the coupled-inductor can be recycled to the output capacitor. In this converter...
In this Paper, a new nonisolated single switch DC-DC converter with high voltage gain is proposed. The proposed converter introduced a hybrid switched capacitor technique for providing high voltage gain without high switch duty cycle. Also an auxiliary circuit has been applied to the proposed converter for providing soft switching condition. This circuit consists of two coupled inductor and one diode...
This paper proposes a new soft switching high step up converter without any auxiliary switch. because of high voltage gain the proposed converter has low voltage stress on power switch, power diodes and output capacitors. The simple auxiliary circuit is applied to high step up converter for providing soft switching condition and also to increase voltage gain a flyback converter is combined to boost...
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