| 摘要 |
<p>The present invention relates to a power converter adapted to convert at least one AC input voltage into an AC output voltage, a power converter (2) comprising: an input signal conversion circuit (6) having half-bridge connected switches (SW1, SW2) being connected to each other at a signal input node, SIN, to which said AC input voltage is applied by an AC voltage source (3); an output signal conversion circuit (7) having half-bridge connected switches (SW3, SW4) being connected to each other at a signal output node, SON, from which the output voltage is supplied to a load (9); an intermediate DC bus circuit (8) connecting said input signal conversion circuit (6) with said output signal conversion circuit (9) via bus lines; a DC bus circuit (8) having capacitors (Ci, C2) connected to each other at a neutral node, NN; and a control circuit (11) adapted to control the switches of said input signal conversion circuit (6) and of said output signal conversion circuit (7) such that said bus line voltages of said bus lines follow a voltage signal envelope corresponding to the maximum voltage of the AC input voltage and/or AC output voltage.</p> |
