Bidirectional direct current converter based on super-capacitor and accumulator hybrid energy storage system of Buck/Boost circuit and control method thereof

The invention provides a bidirectional direct current converter based on a super-capacitor and accumulator hybrid energy storage system of a Buck/Boost circuit, and an accumulator and a super-capacitor are switched in a direct current bus through the Buck/Boost circuit respectively. The circuit adopts an independent PWM control method. An accumulator loop circuit adopts an electric current loop control method. A super-capacitor loop circuit adopts a voltage loop control method. The converter stabilizes the voltage of the direct current bus, and by utilizing the character advantages of the accumulator and the super-capacitor, the healthy using of the accumulator is guaranteed. The invention further provides a control method of the bidirectional direct current converter based on the super-capacitor and accumulator hybrid energy storage system of the Buck/Boost circuit.