Abstract
Abstract: In recent years, DC-DC converters find many applications in low to medium power range. The isolated converters are used in medium power application such as military, electric vehicle (EV) and space industries since they provide isolation between input and output and protection from input side faults. These are made capable of providing a specified output voltage by managing the PWM pulses delivered to the switching device's gate. This paper presents use of voltage feed-forward method which helps in suppressing effect of input line harmonics and disturbances and gives regulated output voltage. The converter is operating at a switching frequency of 140 kHz and behaviour of switching device is not taken into consideration. The converter has protection circuits like over voltage protection (OVP), over current protection (OCP) on input and outputs, under voltage protection (UVP) which protects from abnormal operating condition. The design and simulation results of the feed-forward technique with type-2 compensation and protection circuits are discussed.
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