Control of leakage currents in systems with a plurality of parallel inverters

An electrical energy conversion system comprising:

• a first inverter comprising a first inverter input, a first inverter output,
• a first bulk capacitor circuit coupled to the first inverter input;
• a first inverter ground branch including a first inverter ground connection and a first current sensor effective to provide a first sensor signal proportional to a first leakage current measured in the first inverter ground branch;
• a second inverter comprising a second inverter input,
• a second inverter output connected in parallel to the first inverter output, and
• a second bulk capacitor circuit coupled to the second inverter input;
• first DC voltage source terminals coupled to the first inverter input;
• second DC voltage source terminals coupled to the second inverter input;
• and a first control loop responsive to the first sensor signal and effective to apply a first feedback signal to vary a voltage across the first inverter bulk capacitor circuit.