A Buck Converter Based Reduced Voltage Starter for DC Oil Pumps
Designed a Reduced Voltage Starter for DC oil pumps in power plant, which is a Buck Converter based DC-motor soft Starter/Stopper with 220VDC power supply. In this paper, the main circuit, working principle and operating sequences of the switches of the device are clarified; and the design of each circuit unit is briefed; the transient of Buck Converter are analyzed and the snubbers for the Buck Converter are designed; at last the load test results of 55kw device are sketched. After running in a number of power plants, it's been proved that the device is an upgrade for traditional Rotor Resistance Starter, for its stability, reliability, efficiency, and intelligence.
J. W. Li et al., "A Buck Converter Based Reduced Voltage Starter for DC Oil Pumps", Applied Mechanics and Materials, Vols. 130-134, pp. 1968-1972, 2012