Converter with phase-offset switching

A direct current (DC) to alternating current (AC) inverter system, comprising:

• a first inverter module configured to receive a first DC input from a first DC source and provide a first AC output to an electrical grid, the first inverter module comprising:
• a first switch electrically coupled between the first DC input and the first AC output;
• a first inductor coupled between the first DC input and the first AC output;
• and
• a first control circuit configured to:
• receive a synchronization signal indicating a zero crossing of a signal on the electric grid;
• generate a first switch control signal having a phase that is offset from the signal by a first phase offset;
• modulate the first switch according to the first switch control signal;
• a second inverter module configured to receive a second DC input from a second DC source and provide a second AC output to the electrical grid, wherein the first inverter module and the second inverter module are electrically coupled in series such that an AC output of the inverter system comprises a sum of the first AC output and the second AC output, the second inverter module comprising:
• a second switch electrically coupled between the second DC input and the second AC output;
• a second filter electrically coupled between the second DC input and the second AC output;
• and
• a second control circuit configured to:
• receive the synchronization signal;
• and
• generate a second switch control signal having a phase that is offset from the signal by a second phase offset different than the first phase offset.