Switching module for a power electronic switching assembly

A switching module comprising:

• an H-bridge circuit comprising:
• first and second AC bridge terminals electrically connectable to a respective coil, first and second DC bridge terminals electrically connectable to a DC current source or to a DC bridge terminal of another switching module,
• a first switch assembly electrically connected between the first AC bridge terminal and the first DC bridge terminal, the first switch assembly comprising a first controllable semiconductor switch and a first semiconductor device electrically connected in series,
• a second switch assembly electrically connected between the first AC bridge terminal and the second DC bridge terminal, the second switch assembly comprising a second controllable semiconductor switch and a second semiconductor device electrically connected in series,
• a third switch assembly electrically connected between the second AC bridge terminal and the first DC bridge terminal, the third switch assembly comprising a third controllable semiconductor switch and a third semiconductor device electrically connected in series, and
• a fourth switch assembly electrically connected between the second AC bridge terminal and the second DC bridge terminal, the fourth switch assembly comprising a fourth controllable semiconductor switch and a fourth semiconductor device electrically connected in series;
• and
• an active clamp circuit comprising:
• first and second DC clamp terminals,
• a fifth controllable semiconductor switch electrically connected between the first DC clamp terminal and a junction between the first controllable semiconductor switch and the first semiconductor device,
• a sixth controllable semiconductor switch electrically connected between the second DC clamp terminal and a junction between the second controllable semiconductor switch and the second semiconductor device,
• a seventh controllable semiconductor switch electrically connected between the first DC clamp terminal and a junction between the third controllable semiconductor switch and the third semiconductor device,
• an eighth controllable semiconductor switch electrically connected between the second DC clamp terminal and a junction between the fourth controllable semiconductor switch and the fourth semiconductor device, and
• an energy storage device electrically connected between the first and second DC clamp terminals.