Patent ID: 7660138

Claim:
A method for operating an electronically controlled inverter, comprising: controlling a positive half wave of an output alternating current in accordance with a step-up/step-down cascade; controlling a negative half wave of the output alternating current in accordance with a CUK converter; and providing a single-phase inverter having: two direct current terminals, two alternating current terminals, a plurality of semiconductor switches controlled by a plurality of microcontrollers, and a first limiting choke having a first side connected to a positive pole of a direct current source and a second side connected via a first semiconductor switch to a negative pole of the direct current source and the second side of the first choke is also connected via a series circuit of a second semiconductor switch and a third semiconductor switch to a first terminal of a second choke of which the second terminal is connected to a first terminal of an alternating current output, that the connection of second and third semiconductor switch via a first capacitor and a fifth semiconductor switch is connected via the second terminal of the alternating current output, that the negative pole of the direct current source is connected to the second terminal of the alternating current output and that the connection of first capacitor and fifth semiconductor switch is made via a fourth semiconductor switch with the first terminal of the second choke.