An inverter system comprising: an input having an input current, a positive DC node and a negative DC node adapted to be coupled to a DC power source and to receive input DC power from the DC power source; an output having an output current and adapted to be coupled to at least one load and to provide output AC power to the at least one load; a first inverter leg including a first switching device and a second switching device; a second inverter leg including a third switching device and a fourth switching device, the first inverter leg and the second inverter leg being coupled between the input and the output and adapted to convert the input DC power to the output AC power; an output capacitor coupled across the output; characterized in that the inverter system further comprises: a single current sensor, which is coupled to one of the negative DC node and the positive DC node and comprising a non-inductive current sense resistor; a controller assembly adapted to measure a current through the single current sensor and determine an inductor current through an inductor coupled between the second inverter leg and the output, based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node, and determine the output current based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node; and a first capacitor coupled between the negative DC node and the positive DC node, and a second capacitor coupled between the negative DC node and the positive DC node, said second capacitor comprising a high-frequency decoupling capacitor, and wherein the non-inductive current sense resistor is coupled between the first capacitor and the second capacitor; wherein the controller assembly is adapted to: measure an output voltage; estimate a voltage across the output capacitor based at least in part on a model of the output capacitor and a current through the output capacitor; compare the estimated voltage across the output capacitor and said output voltage to determine the current through the output capacitor; and compare the current through the output capacitor and the inductor current to determine the output current. an input having an input current, a positive DC node and a negative DC node adapted to be coupled to a DC power source and to receive input DC power from the DC power source; an output having an output current and adapted to be coupled to at least one load and to provide output AC power to the at least one load; a first inverter leg including a first switching device and a second switching device; a second inverter leg including a third switching device and a fourth switching device, the first inverter leg and the second inverter leg being coupled between the input and the output and adapted to convert the input DC power to the output AC power; an output capacitor coupled across the output; characterized in that the inverter system further comprises: a single current sensor, which is coupled to one of the negative DC node and the positive DC node and comprising a non-inductive current sense resistor; a controller assembly adapted to measure a current through the single current sensor and determine an inductor current through an inductor coupled between the second inverter leg and the output, based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node, and determine the output current based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node; and a first capacitor coupled between the negative DC node and the positive DC node, and a second capacitor coupled between the negative DC node and the positive DC node, said second capacitor comprising a high-frequency decoupling capacitor, and wherein the non-inductive current sense resistor is coupled between the first capacitor and the second capacitor; a single current sensor, which is coupled to one of the negative DC node and the positive DC node and comprising a non-inductive current sense resistor; a controller assembly adapted to measure a current through the single current sensor and determine an inductor current through an inductor coupled between the second inverter leg and the output, based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node, and determine the output current based at least in part on the current through the single current sensor which is coupled to one of the negative DC node and the positive DC node; and a first capacitor coupled between the negative DC node and the positive DC node, and a second capacitor coupled between the negative DC node and the positive DC node, said second capacitor comprising a high-frequency decoupling capacitor, and wherein the non-inductive current sense resistor is coupled between the first capacitor and the second capacitor; measure an output voltage; estimate a voltage across the output capacitor based at least in part on a model of the output capacitor and a current through the output capacitor; compare the estimated voltage across the output capacitor and said output voltage to determine the current through the output capacitor; and compare the current through the output capacitor and the inductor current to determine the output current.