A Cascaded Boost–Buck Converter for High-Efficiency Wireless Power Transfer Systems

“…9 and Fig. 11, a cascaded boost-buck DC/DC converter can be applied to implement the control of the load seen by the rectifier, provide an optimal load and thus maintain a high overall system efficiency [25]. Taking the buck converter as an example, assume there is no power loss, then…”

Section: Optimal Load-based Wireless Chargingmentioning

confidence: 99%

Analysis, control, and wireless charging of energy systems using ultracapacitors

Zhao

Yin

et al. 2014

2014 IEEE International Electric Vehicle Conference (IEVC)

Self Cite

View full text Add to dashboard Cite

The battery-ultracapacitor hybrid energy storage system (HESS) and its management have been widely investigated in recent years. Meanwhile, there is a lack of general and quantitative analysis on the energy loss of the battery-ultracapacitor HESS that does not depend on any specific control algorithm or physical limitations. In addition, the battery-ultracapacitor HESS is actually a simple example of a networked energy system. An agent-based control approach is desirable in order to improve the synergy, and thus, the flexibility, scalability, faulttolerance and reliability of the hybrid energy systems, and also the computational efficiency. Finally, considering the requirement of fast and frequent wireless charging, ultracapacitors could be more suitable than batteries due to their excellent reliability and charge/discharge capability. In this paper, these three aspects for the energy systems using ultracapacitors, i.e., analysis, control, and wireless charging, are discussed.

show abstract

“…Traditionally, impedance matching method is utilized to realize the maximum power transfer tracking (MPTT) [17]. Reference [18] realizes the impedance matching by adding passive components while references [5,[19][20][21] do the impedance matching through DC/DC converters (e.g., Boost, Buck, Sepic, etc.). Since the load resistance of a practical WPT system varies with time, therefore using DC/DC converters to do the impedance matching is more suitable for the frequent load variations [19].…”

Section: Introductionmentioning

confidence: 99%

A Maximum Power Transfer Tracking Method for WPT Systems with Coupling Coefficient Identification Considering Two-Value Problem

Dai

et al. 2017

Energies

View full text Add to dashboard Cite

Maximum power transfer tracking (MPTT) is meant to track the maximum power point during the system operation of wireless power transfer (WPT) systems. Traditionally, MPTT is achieved by impedance matching at the secondary side when the load resistance is varied. However, due to a loosely coupling characteristic, the variation of coupling coefficient will certainly affect the performance of impedance matching, therefore MPTT will fail accordingly. This paper presents an identification method of coupling coefficient for MPTT in WPT systems. Especially, the two-value issue during the identification is considered. The identification approach is easy to implement because it does not require additional circuit. Furthermore, MPTT is easy to realize because only two easily measured DC parameters are needed. The detailed identification procedure corresponding to the two-value issue and the maximum power transfer tracking process are presented, and both the simulation analysis and experimental results verified the identification method and MPTT.

show abstract

A Cascaded Boost–Buck Converter for High-Efficiency Wireless Power Transfer Systems

Cited by 228 publications

References 11 publications

Reconfigurable Wireless Power Transfer Systems With High Energy Efficiency Over Wide Load Range

Reconfigurable Wireless Power Transfer Systems With High Energy Efficiency Over Wide Load Range

Analysis, control, and wireless charging of energy systems using ultracapacitors

A Maximum Power Transfer Tracking Method for WPT Systems with Coupling Coefficient Identification Considering Two-Value Problem

Contact Info

Product

Resources

About