US 12,410,532 B2
Impedance monitoring of a modular electrolysis system
Ramesh Srinivasan, Bangalore (IN); Anil Kumar Adapa, Bangalore (IN); Arne Ballantine, Incline Village, NV (US); and Zachary Burpee, San Jose, CA (US)
Assigned to Ohmium International, Inc., Newark, CA (US)
Filed by OHMIUM INTERNATIONAL, Inc., Incline Village, NV (US)
Filed on Jun. 28, 2021, as Appl. No. 17/360,153.
Claims priority of application No. 202021027158 (IN), filed on Jun. 26, 2020.
Prior Publication US 2021/0404078 A1, Dec. 30, 2021
Int. Cl. H02M 1/14 (2006.01); C25B 1/02 (2006.01); C25B 15/023 (2021.01); H01M 8/04089 (2016.01); H01M 8/04537 (2016.01); H01M 8/04664 (2016.01); H02M 1/00 (2006.01); H02M 1/42 (2007.01); H01M 8/10 (2016.01); H02M 7/12 (2006.01); H02M 7/155 (2006.01); H02M 7/21 (2006.01); H02M 7/217 (2006.01)
CPC C25B 15/023 (2021.01) [C25B 1/02 (2013.01); H01M 8/04089 (2013.01); H01M 8/04649 (2013.01); H01M 8/04679 (2013.01); H02M 1/007 (2021.05); H02M 1/14 (2013.01); H02M 1/4216 (2013.01); H01M 2008/1095 (2013.01); H02M 1/4233 (2013.01); H02M 7/12 (2013.01); H02M 7/155 (2013.01); H02M 7/21 (2013.01); H02M 7/217 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An alternating current (AC) impedance spectroscopy system, comprising:
a power factor corrected (PFC) rectifier electrically connectable to an AC power source via an AC split bus and to a direct current DC/DC converter via a first DC bus, wherein the PFC rectifier includes:
a plurality of electric power inverters electrically connectable to respective AC busses of the AC split bus;
a first capacitor and a second capacitor electrically connected in parallel to the plurality of electric power inverters via a middle DC bus at a DC-link midpoint; and
an auxiliary electric power converter electrically connected to the DC-link midpoint via the middle DC bus and electrically connectable to the direct current DC/DC converter via the first DC bus, the auxiliary electric power converter configured to draw a reactive power amount from the DC-link to cancel a ripple current drawn by the DC/DC converter and comprising:
a third capacitor electrically connected in parallel to the first capacitor and a fourth capacitor electrically connected in parallel to the second capacitor; and
a filtering inductor electrically connected to the third capacitor and the fourth capacitor in parallel, wherein current from the DC-link midpoint is alternately and controllably drawn through the filtering inductor or the third capacitor and the fourth capacitor.