US 12,081,033 B2
Electromagnetic induction type magnetic energy collector based on capacitive energy storage and power improvement method
Aijun Yang, Shaanxi (CN); Xiaohua Wang, Shaanxi (CN); Mingzhe Rong, Shaanxi (CN); Zhu Liu, Shaanxi (CN); Pengbo Zhao, Shaanxi (CN); Kai Ye, Shaanxi (CN); and Huan Yuan, Shaanxi (CN)
Assigned to XI'AN JIAOTONG UNIVERSITY, Xi'an (CN)
Filed by XI'AN JIAOTONG UNIVERSITY, Shaanxi (CN)
Filed on Jul. 13, 2022, as Appl. No. 17/864,040.
Claims priority of application No. 202111471891.5 (CN), filed on Dec. 3, 2021.
Prior Publication US 2023/0179018 A1, Jun. 8, 2023
Int. Cl. H02J 50/00 (2016.01); H02J 7/34 (2006.01); H02M 1/00 (2007.01); H02M 3/158 (2006.01)
CPC H02J 50/001 (2020.01) [H02J 7/345 (2013.01); H02J 50/005 (2020.01); H02M 1/0058 (2021.05); H02M 3/1588 (2013.01); H02J 2207/20 (2020.01); H02J 2207/50 (2020.01)] 10 Claims
OG exemplary drawing
 
1. An electromagnetic induction type magnetic energy collector based on capacitive energy storage, comprising:
a magnetic core coil, which comprises:
a main energy acquisition coil sleeved in a main circuit to collect magnetic field energy, and
a detection coil sleeved in the main circuit to generate a sinusoidal signal for detecting zero crossing of a primary current; a main circuit module, which comprises:
a switch group S1, comprising a plurality of MOSFETs,
a switch group S2, comprising a plurality of MOSFETs, the switch group S2 and the switch group S1 being alternately turned on and off,
a first rectifier bridge connected to the switch group S2 and the switch group S1, and
a load;
a detection module, which detects the zero crossing of the primary current and comprises:
a comparator circuit connected to the detection coil to compare the sinusoidal signal and convert the sinusoidal signal into a zero-crossing square wave signal;
a control module, which is connected to the comparator circuit, determines the zero crossing of the primary current based on the zero-crossing square wave signal, and determines phases and duty ratios of a complementary control signal g0 and a complementary control signal g1 according to predetermined delay time; and
an isolation module, which is connected to the control module and comprises four optocouplers which are divided into one group for isolating and amplifying the complementary control signal g0, and the other group for isolating and amplifying the complementary control signal g1, four driving signals G00, G01, G10 and G11 generated by the four optocouplers being transmitted to gate ends and source ends of the corresponding MOSFETs to alternately turn on and off the switch group S2 and the switch group S1.