US 12,088,216 B2
DC to AC converter with magnitude based on duty ratio
Vaibhav Kumar Somani, Karnataka (IN); and Kumbha Veera Hanuman, Andhra Pradesh (IN)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Nov. 17, 2022, as Appl. No. 17/989,192.
Claims priority of application No. 202211021616 (IN), filed on Apr. 11, 2022; and application No. 202211039969 (IN), filed on Jul. 12, 2022.
Prior Publication US 2023/0327576 A1, Oct. 12, 2023
Int. Cl. H02M 1/00 (2007.01); H02M 3/158 (2006.01); H02M 7/48 (2007.01); H02M 7/483 (2007.01); H02M 7/493 (2007.01); H02M 7/538 (2007.01); H02M 7/53846 (2007.01); H02M 7/539 (2006.01)
CPC H02M 7/53803 (2013.01) [H02M 1/0093 (2021.05); H02M 1/0095 (2021.05); H02M 3/158 (2013.01); H02M 7/4835 (2021.05); H02M 7/493 (2013.01); H02M 7/53846 (2013.01); H02M 7/539 (2013.01); H02M 7/48 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A DC to AC converter, the converter comprising:
an input configured to receive a DC input voltage;
an output;
two serially connected capacitors connected across the output, the two serially connected capacitors including a first capacitor and a second capacitor connected together at a connection node, wherein the second capacitor is connected between the connection node and ground;
a first parallel converter connected between the input and the connection node;
a second parallel converter connected between the input and the connection node and in parallel with the first parallel converter; and
a controller that selectively connects the first and second parallel converters to the input based on a first duty cycle (D1) and second duty cycle (D2), respectively, and wherein D2 is a fixed value and D1 is variable value, wherein D1 varies based on a desired alternating current signal across the output.