| 摘要 |
In pulse-controlled invertors, direct converters or other voltage-injection converter circuits, in which the changeover commands of a switch (7.R) are derived from a reference voltage (Uref.R) for an output voltage (U.R), when the switching threshold voltage (Uv.R) control setting is low, the output voltage has a magnitude error and a phase error with respect to the reference voltage. In order to compensate for this error, the magnitude of the threshold voltage is applied as an additional signal (Uz.R) of the reference voltage corresponding to the mathematical sign of the current flowing through the switch. <IMAGE>
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