* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Document
Survey
Document related concepts
Immunity-aware programming wikipedia , lookup
Audio power wikipedia , lookup
Josephson voltage standard wikipedia , lookup
Transistor–transistor logic wikipedia , lookup
Radio transmitter design wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Valve RF amplifier wikipedia , lookup
Operational amplifier wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Power MOSFET wikipedia , lookup
Integrating ADC wikipedia , lookup
Current mirror wikipedia , lookup
Schmitt trigger wikipedia , lookup
Surge protector wikipedia , lookup
Voltage regulator wikipedia , lookup
Opto-isolator wikipedia , lookup
Power electronics wikipedia , lookup
Transcript
An Isolated Soft-switching Buck-Boost Converter Utilizing Two Transformers and Embedded Bidirectional Switches on Secondary-side For Wide Voltage Applications Abstract: A dual-phase-shift controlled isolated buck-boost converter is presented for wide input or output voltage range applications. Two transformers and a voltage-doubler rectifier with embedded bidirectional switch are employed. The primary windings of the two transformers are in series and the secondary windings are in parallel. With optimized dual-phase-shift modulation strategies, zero voltage switching (ZVS) is achieved for both the primary- and secondary-side power MOSFETs in a wide load range. The reverse recovery problem of rectifying diodes is eliminated as well. Leakage inductances of the transformers are utilized for power transferring. The voltage stresses of primary-side and secondary-side power MOSFETs are clamped to the input voltage and half of the output voltage, respectively. Besides, the converter can operate in the buck, balance and boost modes to achieve a wide voltage range. The operational principles are analyzed and experimental results of a 1-kW 100-kHz prototype are provided to verify the effectiveness of the presented converter. Existing system: Isolated DC-DC converters with wide input/output voltage ranges have been widely used in the applications of renewable energy, storage and electric vehicles power systems. Proposed system: A dual-phase-shift controlled soft-switching DC/DC converter for high-efficiency, wide voltage range and galvanic isolation application is proposed. With optimized control scheme, soft switching is achieved for all MOSFETs and diodes within a wide load range. Leakage inductance of transformers is used to for power transferring and the voltage spike problem is overcome. Circuit diagram: Application: Isolated DC-DC converters with wide input/output voltage ranges have been widely used in the applications of renewable energy, storage and electric vehicles’ power systems. Reference: [1] D. S. Gautam, F. Musavi, W. Eberle, and W. G. Dunford, “A zero voltage switching full-bridge DC-DC converter with capacitive output filter for plug-in hybrid electric vehicle battery charging,” IEEE Trans. Power Electronics, vol. 28, no. 12, pp. 5728-5735, Dec. 2013. [2] H. Wu, Y. Xing, “Families of forward converters suitable for wide input voltage range applications,” IEEE Trans. Power Electronics, vol. 29, no. 11, pp. 6006-6017, Nov. 2014. [3] Y. Zhao, W. Li, Y. Deng, and X. He, “Analysis, design, and experimentation of an isolated ZVT boost converter with coupled inductors,” IEEE Trans. Power Electronics, vol. 26, no. 2, pp. 541-550, Feb. 2011. [4] Y. Wang, W. Liu, H. Ma, L. Chen, “Resonance analysis and soft switching design of isolated boost converter with coupled inductors for vehicle inverter application,” IEEE Trans. Power Electronics, vol. 30, no. 3, pp. 1383-1392, Mar. 2015.