Method for closed-loop control of at least two converters, which can be controlled as rectifiers or inverters and are connected to one another via a DC voltage link, in the field of power transmission and/or distribution, in which - a measurement DC voltage (Udc_r1...Udc_rr; Udc_i1...Udc_ii) and a measurement direct current (Idc_r1...Idc_rr; Idc_i1...Idc_ii) are in each case measured at each converter and are transmitted to a rectifier regulator (7_rr) for closed-loop control of the respective rectifier, or are transmitted to an inverter regulator (8_ii) for closed-loop control of the respectively associated inverter, - wherein each rectifier regulator (7 rr) and each inverter regulator (8_ii) in each case forms the difference between a predetermined nominal DC voltage (Udco) and the respectively received measurement DC voltage (Udc_r1...Udc_rr; Udc_i1...Udc_ii), producing a difference DC voltage (du) and, furthermore, the difference between a nominal direct current (Idco_r1...Idco_rr, Idco_i1...Idco_ii) and the respectively received measurement direct current (Idc_r1...Idc_rr; Idc_i1...Idc_ii), producing a difference direct current (di), where the measurement direct current, the measurement DC voltage, the nominal direct current and the nominal DC voltage are in a normalized form, and - each converter is a self-commutated converter having power semiconductors which can be turned off, characterized in that - the rectifier regulator (7_rr) controls the respectively associated converter such that the sum of the product of the difference DC voltage (du) and the magnitude of the nominal direct current (|Idco_r|), which is provided at the respectively associated rectifier, and the difference direct current (di) is a minimum (du*|Idco_r|+di→Min) and - the inverter regulator (8_ii) controls the respectively associated converter such that the sum between the difference DC voltage (du) and the difference direct current (di) is a minimum (du+di→Min). - a measurement DC voltage (Udc_r1...Udc_rr; Udc_i1...Udc_ii) and a measurement direct current (Idc_r1...Idc_rr; Idc_i1...Idc_ii) are in each case measured at each converter and are transmitted to a rectifier regulator (7_rr) for closed-loop control of the respective rectifier, or are transmitted to an inverter regulator (8_ii) for closed-loop control of the respectively associated inverter, - wherein each rectifier regulator (7 rr) and each inverter regulator (8_ii) in each case forms the difference between a predetermined nominal DC voltage (Udco) and the respectively received measurement DC voltage (Udc_r1...Udc_rr; Udc_i1...Udc_ii), producing a difference DC voltage (du) and, furthermore, the difference between a nominal direct current (Idco_r1...Idco_rr, Idco_i1...Idco_ii) and the respectively received measurement direct current (Idc_r1...Idc_rr; Idc_i1...Idc_ii), producing a difference direct current (di), where the measurement direct current, the measurement DC voltage, the nominal direct current and the nominal DC voltage are in a normalized form, and - each converter is a self-commutated converter having power semiconductors which can be turned off, characterized in that - the rectifier regulator (7_rr) controls the respectively associated converter such that the sum of the product of the difference DC voltage (du) and the magnitude of the nominal direct current (|Idco_r|), which is provided at the respectively associated rectifier, and the difference direct current (di) is a minimum (du*|Idco_r|+di→Min) and - the inverter regulator (8_ii) controls the respectively associated converter such that the sum between the difference DC voltage (du) and the difference direct current (di) is a minimum (du+di→Min).