A power loss protection integrated circuit includes a VIN terminal, a VOUT terminal, an STR terminal, a switch circuit (eFuse), a control circuit, and a prebiasing circuit. In a normal mode, current flows from a power source, into VIN, through the eFuse, out of VOUT, and to the output node. A switching converter of which the control circuit is a part is disabled. If a switch over condition then occurs, the eFuse is turned off and the switching converter starts operating. The switching converter receives energy from STR and drives the output node. Switch over is facilitated by prebiasing. Prior to switch over, the prebiasing circuit prebiases a control loop node as a function of eFuse current flow prior to switch over. When the switching converter begins operating, the node is already prebiased for the proper amount of current to be supplied by the switching converter onto the output node.

A voltage adjusting circuit includes a variable current generating means for generating a variable current to be supplied to a power source line, a decision voltage generating means for generating a decision voltage by using a power source voltage of the power source line, and power source noise detecting means for detecting power source noise of the power source line by using the power source voltage of the power source line and the decision voltage.

A voltage adjusting circuit includes a variable current generating means for generating a variable current to be supplied to a power source line, a decision voltage generating means for generating a decision voltage by using a power source voltage of the power source line, and power source noise detecting means for detecting power source noise of the power source line by using the power source voltage of the power source line and the decision voltage.

Aspects of the present disclosure are generally directed to configurations of power conversion systems for wind turbine generators. For example, certain aspects are directed to a multi-rotor wind turbine. The multi-rotor wind turbine generally includes a plurality of rotors, each coupled to a plurality of electrical generators, one or more machine-side converters, MSCs, coupled to the electrical generators of each of the plurality of rotors and configured to generate at least one direct-current, DC, signal, and one or more line-side converters, LSCs, coupled to the MSCs and configured to generate at least one AC signal based on the at least one DC signal.

Aspects of the present disclosure are generally directed to configurations of power conversion systems for wind turbine generators. For example, certain aspects are directed to a multi-rotor wind turbine. The multi-rotor wind turbine generally includes a plurality of rotors, each coupled to a plurality of electrical generators, one or more machine-side converters, MSCs, coupled to the electrical generators of each of the plurality of rotors and configured to generate at least one direct-current, DC, signal, and one or more line-side converters, LSCs, coupled to the MSCs and configured to generate at least one AC signal based on the at least one DC signal.

A converter for symmetrical reactive power compensation has phase legs whose associated phases of a three-phase AC voltage network can be connected and are interconnected in an insulated star connection. The first phase leg is devoid of sub modules. The second and third phase legs each has a phase module with series-connected bipolar sub modules. A control device controls phase module currents and determines voltages to be set at each phase module. A decoupling unit calculates correction voltages for each phase module as a function of a first connection voltage between the first and second phase legs, a second connection voltage between the second and third phase legs and a first and/or a second control voltage each derived from target currents and the phase module currents of the second or third phase legs. The voltages to be set are derived from the control voltages and correction voltages.

A converter for symmetrical reactive power compensation has phase legs whose associated phases of a three-phase AC voltage network can be connected and are interconnected in an insulated star connection. The first phase leg is devoid of sub modules. The second and third phase legs each has a phase module with series-connected bipolar sub modules. A control device controls phase module currents and determines voltages to be set at each phase module. A decoupling unit calculates correction voltages for each phase module as a function of a first connection voltage between the first and second phase legs, a second connection voltage between the second and third phase legs and a first and/or a second control voltage each derived from target currents and the phase module currents of the second or third phase legs. The voltages to be set are derived from the control voltages and correction voltages.

The present disclosure relates to converter modules. The teachings thereof may be embodied in converter modules for a multi-level energy converter. For example, a method for operating a converter module of a multi-level energy converter by means of a control unit and via a control connection may include: controlling the switching states of one of two converter module connections of the converter module and a switching unit incorporating the control connection. Two series-connected converter module capacitors connected to the switching unit respectively deliver a converter module capacitor voltage. The switching unit switches the converter module capacitor voltage of one of the converter module capacitors or a summed voltage of the series-connected converter module capacitors to the converter module connections, according to the respective switching state of the switching unit.

The present disclosure relates to converter modules. The teachings thereof may be embodied in converter modules for a multi-level energy converter. For example, a method for operating a converter module of a multi-level energy converter by means of a control unit and via a control connection may include: controlling the switching states of one of two converter module connections of the converter module and a switching unit incorporating the control connection. Two series-connected converter module capacitors connected to the switching unit respectively deliver a converter module capacitor voltage. The switching unit switches the converter module capacitor voltage of one of the converter module capacitors or a summed voltage of the series-connected converter module capacitors to the converter module connections, according to the respective switching state of the switching unit.

A power loss protection integrated circuit includes a VIN terminal, a VOUT terminal, an STR terminal, a switch circuit (eFuse), a control circuit, and a prebiasing circuit. In a normal mode, current flows from a power source, into VIN, through the eFuse, out of VOUT, and to the output node. A switching converter of which the control circuit is a part is disabled. If a switch over condition then occurs, the eFuse is turned off and the switching converter starts operating. The switching converter receives energy from STR and drives the output node. Switch over is facilitated by prebiasing. Prior to switch over, the prebiasing circuit prebiases a control loop node as a function of eFuse current flow prior to switch over. When the switching converter begins operating, the node is already prebiased for the proper amount of current to be supplied by the switching converter onto the output node.