US 12,421,930 B2
Floating wave energy power generation device with adjustable position pendulum
Dong Hyun Ha, Seoul (KR); Jung Hun Choi, Hwaseong-si (KR); and Jae Wung Jung, Bucheon-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Aug. 26, 2022, as Appl. No. 17/822,683.
Claims priority of application No. 10-2021-0185105 (KR), filed on Dec. 22, 2021.
Prior Publication US 2023/0193872 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F03B 13/16 (2006.01); H02K 7/116 (2006.01); H02K 7/18 (2006.01); H02K 11/21 (2016.01); B63B 35/44 (2006.01)
CPC F03B 13/16 (2013.01) [H02K 7/116 (2013.01); H02K 7/1853 (2013.01); H02K 11/21 (2016.01); B63B 2035/4466 (2013.01); F05B 2220/706 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A renewable energy generator, comprising:
a housing for floating in a body of water;
a main generator unit mounted in the housing and including:
an internal housing,
a pendulum provided to pivotally move inside the internal housing,
a pendulum rotation shaft connected to the pendulum and rotatably coupled to the internal housing,
a main motor-generator operating in a first mode or a second mode, wherein the first mode is configured to convert kinetic energy of the pendulum into electrical energy and the second mode is configured to convert applied electrical energy to kinetic energy of the pendulum,
a gear unit engaged both to the pendulum rotation shaft and to the main motor-generator;
one or more frames fixed in the housing;
a main rotation shaft fixed to the main motor-generator and rotatably coupling the main generator unit to at least one of the one or more frames, wherein the main rotation shaft is rotatable with respect to the one or more frames; and
a controller configured to:
determine whether an addition of electrical energy using an operation of the pendulum when the housing is moved by waves in the body of water is greater than a loss of electrical energy for driving the main motor-generator,
control the main motor-generator to move the pendulum when the addition of electrical energy is greater than the loss of electrical energy, and
control the main motor-generator to stop when the addition of electrical energy is less than the loss of electrical energy.