Inverter circuit, inverter, and control method and apparatus of an inverter circuit

An inverter circuit, comprising an inverter module and a filter module that are sequentially connected, characterized in that the inverter module comprises:

• a first bridge arm connected between a positive bus and a negative bus, comprising a first switch tube, a first inductor, a second inductor and a second switch tube that are sequentially connected in series;
• a second bridge arm connected between a neural point and a first node, comprising a third switch tube and a first diode that are connected in series, a collector of the third switch tube being connected with the neural point, an emitter of the third switch tube being connected with an anode of the first diode, a cathode of the first diode being connected with the first node, the first node being a connection point between the first switch tube and the first inductor;
• a third bridge arm connected between the neural point and a second node, comprising a fourth switch tube and a second diode that are connected in series, an emitter of the fourth switch tube being connected with the neural point, a collector of the fourth switch tube being connected with a cathode of the second diode, an anode of the second diode being connected with the second node, the second node being a connection point between the second switch tube and the second inductor;
• a first freewheeling branch connected between the positive bus and the second node;
• and
• a second freewheeling branch connected between the negative bus and the first node,
• wherein the first inductor is connected with the second inductor such that their heteronymous ends are connected each other.