H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/757 (2006.01) H02M 7/515 (2006.01)
Patent
CA 2063596
Abstract of the Disclosure PROCESS AND DEVICE FOR TAKING OVER THE REGULATION OF SEVERAL REGULATING PARAMETERS OF A POWER CONVERTER Current converters of a high-voltage d.c. transmission system or other current-converter installations often require control loops for several controlled variable. Only one control loop thereby determines the delay angle, while the other control loops must be held ready to override this control loop in case of rapid changes in the operating state. According tot he invention, the system deviations of all controlled variables are in fact acquired, and the controller parameters of a pre-programmed, general controlling structure are made available for each controlled variable. However, only one controller is available that has the pre-programmed, general controlling structure. This controller is always operative; however, it only interferes in the minimum value or the maximum value of the system deviations and, in each case, uses the controller parameters, which belong to the control loop activated at nay one time. Fig 2 DC1-27702
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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