A power converter system comprising: a first switch circuit configured to receive a first Direct Current, DC, voltage, the first switch circuit having several switches; a second switch circuit, coupled to the first switch circuit, having a positive connection and a negative connection to receive a second DC voltage, the second switch circuit having several switches; a transformer circuit (206, 324) having a first connection coupled to the first switch circuit, and a second connection coupled to the second switch circuit, the transformer circuit having a transformer; a first capacitor coupled between a load, via the positive connection, and a neutral point; a second capacitor coupled between the load, via the negative connection, and the neutral point; an Alternating Current, AC, switch circuit having a first connection coupled to the first capacitor and to the second capacitor, and a second connection coupled to the transformer circuit, the AC switch circuit having several switches; and a controller coupled to the first switch circuit, the second switch circuit, and the AC switch circuit, the power converter system being characterized in that the controller is configured to: detect a voltage imbalance between the first capacitor and the second capacitor; control the first switch circuit, the second switch circuit, and the AC switch circuit to charge, with the first DC voltage, or discharge, to the load, the first capacitor and the second capacitor at different rates to maintain a voltage level across the first capacitor and a voltage level across the second capacitor to be substantially equal. a first switch circuit configured to receive a first Direct Current, DC, voltage, the first switch circuit having several switches; a second switch circuit, coupled to the first switch circuit, having a positive connection and a negative connection to receive a second DC voltage, the second switch circuit having several switches; a transformer circuit (206, 324) having a first connection coupled to the first switch circuit, and a second connection coupled to the second switch circuit, the transformer circuit having a transformer; a first capacitor coupled between a load, via the positive connection, and a neutral point; a second capacitor coupled between the load, via the negative connection, and the neutral point; an Alternating Current, AC, switch circuit having a first connection coupled to the first capacitor and to the second capacitor, and a second connection coupled to the transformer circuit, the AC switch circuit having several switches; and a controller coupled to the first switch circuit, the second switch circuit, and the AC switch circuit, the power converter system being characterized in that the controller is configured to: detect a voltage imbalance between the first capacitor and the second capacitor; control the first switch circuit, the second switch circuit, and the AC switch circuit to charge, with the first DC voltage, or discharge, to the load, the first capacitor and the detect a voltage imbalance between the first capacitor and the second capacitor; control the first switch circuit, the second switch circuit, and the AC switch circuit to charge, with the first DC voltage, or discharge, to the load, the first capacitor and the second capacitor at different rates to maintain a voltage level across the first capacitor and a voltage level across the second capacitor to be substantially equal.