CPC H02M 7/49 (2013.01) [H02M 1/0009 (2021.05); H02M 1/007 (2021.05); H02M 1/0083 (2021.05); H02M 7/53871 (2013.01)] | 12 Claims |
1. A circuit arrangement for generating an AC voltage, comprising:
at least one modular inverter including a cascade of multiple inverter units;
a control device for controlling the inverter units; and
a data transmission system configured for signal transmission between the control device and the inverter units,
wherein each of the inverter units is connectable to a respective DC voltage source and has a control input configured to receive control signals from the control device for making the respective DC voltage source available on an output side of the respective inverter unit and generating the AC voltage,
wherein the data transmission system has a control line connected to the control device and at least one data line connected to the control device,
wherein each of the inverter units has a data output, wherein the control line is connected to the control inputs of the inverter units and the at least one data line is connected to the data outputs of the inverter units,
wherein each of the inverter units is configured to use the at least one data line to transmit state information relating to the respective DC voltage source to the control device, and
wherein the control device is configured to transmit the control signals to control the inverter units based on the received state information, and
wherein a subset of the inverter units is combined to form a common module group,
wherein the circuit arrangement has a plurality of said common module groups, and
wherein each of the common module groups has a module control input connected to all the control inputs of the inverter units in the respective common module group and a module data output connected to all the data outputs of the inverter units in the common module group,
wherein the data transmission system has one data line for each of the respective common module groups,
wherein the control device has a logic input gate including an input side which is connected to the data lines and an output side which provides a single, combined data line for further processing within the control device, and
wherein each of the common module groups has a logic output gate including an input side which is connected to the data outputs of the inverter units in the respective common module group and an output side which is connected to the module data output of the respective common module group.
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