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Due to the increasing demands of safe and efficient renewable energy systems, isolated DC-DC converters became widely used in this field as the essential power conversion blocks. At the same time, such converters are demanded for wide input voltage range and fault tolerance as desirable features. This paper proposes a isolated boost full bridge DC-DC converter which features wide input range and resilient...
Isolated DC-DC converters are widely used as the essential power conversion equipment in recent renewable energy systems. At the same time, such converters are expected for wide input voltage range and fault tolerance. This paper proposes an isolated boost full bridge DC-DC converter with a set of low loss active snubber circuits. To verify the feasibility of the proposed scheme, a 10 kW prototype...
This paper proposes a novel modulation method of the full bridge three-level LLC resonant converter. The voltage gain of the converter is analyzed by First Harmonic Approximation technique using this modulation method. Therefore designers can easily calculate the converter parameters. A 385V input, 225 to 378V/6.6kW output prototype converter shows 98.14% peak efficiency.
This paper presents a new fast response digitally controlled full bridge converter which combines the fast proportional-differential control with the FIR filter. In the proposed method, the sample timing for proportional-differential control is contrived. Thus, the delay time for proportional-differential control is minimized. The FIR filter is used in order to minimize the steady-state-errors. It...
The purpose of this paper is to present a new digital control switching power supply for the HVDC system in data center. The two stage converters are proposed to address the problem of input voltage drop. It consists of the boost converter and the phase-shifted full bridge converter. Since the first stage boost converter make the output voltage constant, good regulation characteristics against the...
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