US 12,355,363 B2
Energy converter for energy conversion of electrical energy into thermal energy
Robert Lange, Crimmitschau (DE); and Marco Seja
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 17/922,270
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Apr. 7, 2021, PCT No. PCT/EP2021/059019
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2021/219334, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 20172358 (EP), filed on Apr. 30, 2020.
Prior Publication US 2023/0179114 A1, Jun. 8, 2023
Int. Cl. H02M 7/21 (2006.01); H02J 13/00 (2006.01); H02M 1/08 (2006.01); H02M 7/219 (2006.01)
CPC H02M 7/219 (2013.01) [H02J 13/00002 (2020.01); H02M 1/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An energy converter for energy conversion of electrical energy into thermal energy, said energy converter comprising:
a regenerative rectifier electrically connected to a DC voltage circuit and electrically connectable to a first AC voltage grid, said regenerative rectifier comprising a first bridge arm including first and second power semiconductor modules which are connected in series and form a first center-point pick-up which is connectable to a first AC voltage phase of the first AC voltage grid, with the first power semiconductor module electrically connected to a first DC voltage phase of the DC voltage circuit and with the second power semiconductor module electrically connected to a second DC voltage phase of the DC voltage circuit;
first and second capacitors connected in series and forming a second center-point pick-up, with the first capacitor electrically connected to the first DC voltage phase of the DC voltage circuit and with the second capacitor to the second DC voltage phase;
a coil electrically connected between the first center-point pick-up and the second center-point pick-up; and
a metal apparatus arranged on the coil such that the coil is capable of inducing electrical energy in the metal apparatus and enabling the electrical energy to be converted into the thermal energy,
wherein the regenerative rectifier comprises a second bridge arm including third and fourth power semiconductor modules which are connected in series and form a third center-point pick-up which is connectable to a second AC voltage phase of the first AC voltage grid, with the third power semiconductor module electrically connected to the first AC voltage phase of the DC voltage circuit and with the fourth power semiconductor module electrically connected to the second AC voltage phase of the DC voltage circuit.