| 摘要 |
The invention relates to an inductive energy transfer system, having at least one primary coil (Sp1) and at least one secondary coil (Sp2), which are coupled or able to be coupled with one another magnetically and which form a primary-side and a secondary-side resonant circuit (Repri, Resek) having at least one capacitance (C1, C2) respectively, characterised in that a primary-side inverter (15) generates a pulsed voltage (UW), in particular a pulsed square wave voltage, from a unipolar primary voltage (|UN|) or a DC voltage (UG) and supplies the primary-side resonant circuit (Repri), wherein the primary-side inverter (15) is pulsed or adjusted or the pulse of the voltage, in particular square wave voltage, generated by the primary-side inverter (15), is selected or adjusted in such a way that a secondary AC voltage (Ui) induced in the secondary-side resonant circuit (Resek) and having a carrier frequency (fT) results, wherein the amplitude of the secondary AC voltage (Ui) oscillates at mains frequency (f0), and that a device (E) is connected downstream of the secondary-side resonant circuit (Resek), said device generating a bipolar secondary-side output voltage (UA) from the voltage (Ui) present at the output of the secondary-side resonant circuit (Resek), wherein the frequency (fA) of the secondary-side output voltage (UA) is equal to the mains frequency (f0), and that the device (E) has four power semiconductors (L1, L2, L3, L4; L5, L6, L7, L8; L9, L10, L11, L12), which form two groups (Gr1;Gr2) of, in particular, equally as many power semiconductors, and the power semiconductors of a group (Gr1, Gr2) are connected together by means of a group control signal (G1; G2), wherein the groups (Gr1, Gr2) are alternately connected actively by means of the group control signals (G1; G2). |
| 主权项 |
1. An inductive energy transfer system, including:
at least one primary coil; at least one secondary coil, wherein the at least one primary coil and the at least one secondary coil are configured to be coupled with one another magnetically, and wherein the at least one primary coil and the at least one secondary coil form a primary-side resonant circuit and a secondary-side resonant circuit having at least one capacitance, respectively; a primary-side inverter configured to generate a pulsed voltage from a unipolar primary voltage or a DC voltage and to supply the primary-side resonant circuit, wherein the primary-side inverter is pulsed or adjusted or the pulse of the voltage generated by the primary-side inverter is selected or adjusted in such a way that a secondary AC voltage induced in the secondary-side resonant circuit and having a carrier frequency results, wherein an amplitude of the secondary AC voltage oscillates at a mains frequency; and a device connected downstream of the secondary-side resonant circuit and configured to generate a bipolar secondary-side output voltage from the voltage present at an output of the secondary-side resonant circuit, wherein a frequency of the secondary-side output voltage is equal to the mains frequency, wherein the device comprises four power semiconductors that form two groups having equal numbers of power semiconductors, wherein the power semiconductors of a group are connected together by means of a group control signal, wherein the groups are alternately connected actively by means of the group control signals. |
