| 摘要 |
<p>A method of operating an inverter for converting a DC power into AC power by use of a pulse width modulation switching scheme is provided, in which
- the inverter is controlled by use of the pulse width modulation switching scheme to provide at least one alternating current on the basis of at least a current demand signal defining at least one alternating current to be provided by the inverter,
- an upper current threshold is provided which must not be overshot by the at least one alternating current,
- a lower current threshold is provided which must not be undershot by the at least one alternating current,
- the instantaneous value of the at least one alternating current is measured, and
- in case it is detected that the instantaneous value of the at least one alternating current overshoots the upper current threshold or undershoots the lower current threshold, the pulse width modulation switching scheme is replaced by an amended switching scheme which controls the instantaneous value of the at least one alternating current to be between the upper current threshold and the lower current threshold. The upper current threshold and the lower current threshold oscillate with at least one alternating phase.</p> |
