Method and system for controlling a direct-current-to-direct current converter

A dual-active-bridge converter comprising:

• a primary converter having a first switched terminal of low-side semiconductor switch coupled to a corresponding second switched terminal of high-side semiconductor switch at a primary alternating current node, the low-side semiconductor switch having a second switched terminal coupled to one terminal of a primary direct current bus;
• the high-side semiconductor switch having a first switched terminal coupled to another terminal of the primary direct current bus;
• a secondary converter having a first switched terminal of low-side semiconductor switch coupled to a corresponding second switched terminal of high-side semiconductor switch at an secondary alternating current node, the low-side semiconductor switch having a second switched terminal coupled to one terminal of a secondary direct current bus;
• the high-side semiconductor switch having a first switched terminal coupled to another terminal of the secondary direct current bus;
• an output voltage estimator configured to estimate an observed output voltage the secondary converter;
• an output current estimator configured to estimate an observed output current of the secondary converter;
• a transformer coupled between the primary current node and the secondary current node;
• an electronic controller configured to provide control signals to the control terminals of the semiconductor switches of the primary converter and the secondary converter based on a commanded current or target output current;
• the electronic controller configured to adjust the phase angle(s), between a respective pairs of semiconductor switches of the primary converter and second converter based on a deadtime compensation module responsive to a current error or current difference between the target output current and the observed output current.