Systems and methods for controlling multi-level diode-clamped inverters using space vector pulse width modulation (svpwm)

A method of controlling a multi-level inverter, comprising:

• sampling a reference voltage vector and an angle;
• identifying a sector among a plurality of sectors of the multi-level inverter and a region among a plurality of regions of the multi-level inverter based on the sampled reference voltage vector and the sampled angle;
• selecting a switching sequence and a plurality of turn-on time values based on the identified region location;
• and
• generating pulse width modulation (PWM) switching signals for the plurality of regions of the multi-level inverter and the plurality of sectors of the multi-level inverter based on the turn-on time values and the selected switching sequence.

An energy storage system comprising:

• an energy storage device;
• a DC-DC converter coupled to the energy storage device;
• a multi-level inverter coupled to the DC-DC converter;
• and
• a controller for the multi-level inverter, the controller comprising:
• a processor and a memory configured to:
• sample a reference voltage vector and an angle;
• identify a sector among a plurality of sectors of the multi-level inverter and a region among a plurality of regions of the multi-level inverter based on the sampled reference voltage vector and the sampled angle;
• and
• select a switching sequence and a plurality of turn-on time values based on the identified sector and region location;
• and
• a circuit configured to generate pulse width modulation (PWM) switching signals for the plurality of regions of the multi-level inverter and the plurality of sectors of the multi-level inverter based on the turn-on time values and the selected switching sequence.