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The purpose of this paper is to present a design of digital hysteresis current control circuit in ac-dc converter for wind power generation. The control circuit utilizes a digital signal processor and an analog reactor current detector using an RC integrator. In the proposed method, the design of time constant of RC integrator is important to determine the operation range of duty ratio. The design...
In this paper, a new digital hysteresis current control for ac-dc converters is presented. The new control circuit has the peak and valley current detectors which are comprised of an RC integrator, comparator and R-S flip-flop. These current detectors can detect the peak and valley reactor currents in real time. The proposed control circuit structure and the operation principle are explained with...
Switching power converters connected to dc loads need high stability because the dc bus voltage is fluctuated in the hybrid energy system. The aim of this paper is to present stability characteristics of a digital peak current control dc-dc converter regarding input voltage fluctuation. The proposed method shows higher stability than the digital voltage mode control method even though the input voltage...
The purpose of this paper is to present a transient response of proposed quick response peak current control dc-dc converter. In the proposed method, the peak current is able to be detected in real time by using voltage controlled oscillator (VCO) which is very low cost and a high speed A-D converter. The proposed circuit generates the turn off signal of the main switch. In simulated results, the...
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