Electrical energy converter with at least one pair of piezoelectric assemblies and at least one complementary switch for direct connection between them, conversion system and associated control method

An electrical energy converter to convert an input voltage to at least one output voltage, the electrical energy converter comprising:

• at least one pair of first and second piezoelectric assemblies, each piezoelectric assembly including at least one piezoelectric element,
• a first switching bridge including two first switching branches, each first switching branch including at least one first switch;
• at least one second switching bridge including two second switching branches, each second switching branch including at least one second switch;
• each piezoelectric assembly including a first end connected to the first switching bridge and a second end connected to the second switching bridge;
• each first switch being connected between an input voltage application terminal and a respective first end;
• each second switch being connected between an output voltage supply terminal and a respective second end;
• and
• at least one complementary switch connected directly between the ends of a respective pair of first and second piezoelectric assemblies, said ends being connected directly to each other via a respective complementary switch being connected to a same respective switching bridge, each complementary switch being connected only to the ends of the respective pair of first and second piezoelectric assemblies.