Inverter with coupled inductances

摘要

An inverter for converting a direct current flowing between two input lines into an alternating current flowing between two output lines includes first and second series circuits each including two switches configured to switch at a high frequency and of an inductance connected between the switches, wherein the two inductances are magnetically coupled. The inverter further includes diodes which lead from opposite sides of the inductances to a first intermediate point and diodes leading from a second intermediate point to the opposite sides of the inductances, and an unfolding circuit which forwards a direct current flowing between the intermediate points and consisting of sine-shaped half-waves to the output lines with a polarity changing half-wave by half-wave.

主权项

1. An inverter for converting a direct current flowing between first and second input lines into an alternating current flowing between first and second output lines, comprising:
a first series circuit comprising a first switch configured to switch at a high frequency, a first inductance and a second switch configured to switch at a high frequency, and connected between the first and second input lines; a first rectifier diode leading from a first side of the first inductance to a first intermediate point, and a second rectifier diode leading from a second intermediate point to a second side of the first inductance; an unfolding circuit connected to the first and second intermediate points and to the first and second output lines, and comprising switches configured to switch at the frequency of the alternating current; and a second series circuit comprising a third switch configured to switch at a high frequency, a second inductance and a fourth switch configured to switch at a high frequency is connected between the first and second input lines, wherein the first inductance and the second inductance are magnetically coupled, and wherein a third rectifier diode leads from a first side of the second inductance to the first intermediate point, and a fourth rectifier diode leads from the second intermediate point to a second side of the second inductance.