A Family of Coupled Inductor Voltage-Multiplying Boost Converters

With the growing maturity of new energy power generation technology, the requirements of boost link in the system are also getting higher and higher. In this study, a new coupling inductor voltage multiplier is proposed, series it with several boost converters, which can get a family of coupled inductor voltage-multiplying boost converters. The voltage gain is significantly improved, the voltage stress of the device is also significantly reduced, and the leakage inductance generated by the coupling inductor can be absorbed, which can restrain the voltage spike of power switch, reduce electromagnetic interference (EMI). This paper analyzes the working principle, steady-state characteristics, parasitic resistance, system stability and other aspects of the converter in detail. Finally, taking one of the converter topologies as an example, its good performance is verified by the experimental results based on a 200 W experiment prototype.