TY - GEN
T1 - Advantages and Tuning of Zero Voltage Switching in a Wireless Power Transfer System
AU - Grazian, Francesca
AU - Van Duijsen, Peter
AU - Soeiro, Thiago B.
AU - Bauer, Pavol
PY - 2019
Y1 - 2019
N2 - In charging applications, wireless power transfer (WPT) is mostly used in the form of inductive power transfer with magnetic resonant coupling. Therefore, both the transmitter and the receiver coils are combined with capacitors, such that only active power is transferred. To evaluate the operation of the WPT charging system, its equivalent circuit can be analyzed in the frequency domain. However, this is limiting since the H-bridge inverter operation is not intrinsically considered. As an example, the operating points of both zero current switching (ZCS) and zero voltage switching (ZVS) operations might be still analyzed, but it is not possible to assess their performance in terms of efficiency. In this paper, the advantage of ZVS over the ZCS is evaluated in terms of the efficiency and the delivered output power. To enable the full potential of ZVS, this is tuned considering the switch capacitance and the dead time.
AB - In charging applications, wireless power transfer (WPT) is mostly used in the form of inductive power transfer with magnetic resonant coupling. Therefore, both the transmitter and the receiver coils are combined with capacitors, such that only active power is transferred. To evaluate the operation of the WPT charging system, its equivalent circuit can be analyzed in the frequency domain. However, this is limiting since the H-bridge inverter operation is not intrinsically considered. As an example, the operating points of both zero current switching (ZCS) and zero voltage switching (ZVS) operations might be still analyzed, but it is not possible to assess their performance in terms of efficiency. In this paper, the advantage of ZVS over the ZCS is evaluated in terms of the efficiency and the delivered output power. To enable the full potential of ZVS, this is tuned considering the switch capacitance and the dead time.
KW - Efficiency
KW - Inverter control
KW - wireless power transfer (WPT)
KW - zero current switching (ZCS)
KW - zero voltage switching (ZVS)
UR - http://www.scopus.com/inward/record.url?scp=85084340723&partnerID=8YFLogxK
U2 - 10.1109/WoW45936.2019.9030626
DO - 10.1109/WoW45936.2019.9030626
M3 - Conference contribution
AN - SCOPUS:85084340723
T3 - 2019 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, WoW 2019
SP - 367
EP - 372
BT - 2019 IEEE PELS Workshop on Emerging Technologies
PB - Institute of Electrical and Electronics Engineers (IEEE)
T2 - 2019 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, WoW 2019
Y2 - 17 June 2019 through 21 June 2019
ER -