A new high voltage gain step-up converter with minimum phase characteristic

DC-DC converters are critical components in contemporary power electronics systems, facilitating efficient power conversion and distribution across various applications. Conventional step-up converters typically exhibit a right-half-plane zero in their transfer function, leading to non-minimum phase characteristics. This behavior restricts the stability margin and makes the dynamic response time undesirable. This paper presents a novel topology designed to address the non-minimum phase problem. In this converter, a portion of the energy from the input source is transferred to the output via the coupled inductor. Additionally, the required voltage gain can be attained by utilizing the quantity and positioning of the coupled inductor's secondary windings. The voltage gain, stress voltage on semiconductor devices, and losses are calculated through steady-state analysis. The control signal to the output voltage transfer function is obtained through small signal analysis. The results from the laboratory prototype and simulations in two distinct scenarios are presented to validate the performance and integrity of the mathematical analysis.