24-pulse rectifier with non-coupled chokes

Abstract

Operating principle of the 24-pulse rectifier circuit with non-coupled chokes was presented in this article. Thanks to the work of this circuit we can obtain small higher harmonics currents content of the rectified current. Transistors T1, T2, T3, T4 were used to regulate the value of rectified current. Fulfillment of their control by using the PWM method regulates the rectified current. In addition this paper provides the ability of such controlling of transistors work, that the mains current of the circuit contains the smallest possible higher harmonics content, expressed by small value of the THD coefficient