摘要:
A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics.
摘要:
A high-ductility, high-strength and high Mn steel strip used for steel strips of automobiles requiring superior formability and high strength, a plated steel strip produced by using the same, and a manufacturing method thereof are disclosed. The high Mn steel strip comprises, by weight %, 0.2˜1.5% of C, 10˜25% of Mn, 0.01˜3.0% of Al, 0.005˜2.0% of Si, 0.03% or less of P, 0.03% or less of S, 0.040% or less of N, and the balance of Fe and other unavoidable impurities. The high-ductility, high-strength and high Mn steel strip, and the plated steel strip produced by using the same have superior surface properties and plating characteristics.
摘要:
An arm-short diagnostic method for a bi-directional DC/DC converter that includes a buck switching device, a buck diode, a boost switching device, and a boost diode, is presented. The method includes detecting an output current of the bi-directional DC/DC converter, and determining whether the output current is detected in a positive direction. The method also includes maintaining supply of a turn-off gating signal to the boost switching device, and supplying a turn-on gating signal to the buck switching device, if the detected output current is in a positive direction. Finally, the method includes determining whether the output current of the bi-directional DC/DC converter increases in a positive direction, and determining that at least one of the boost switching device and the buck diode is in a short circuit state, if it is determined that the output current of the bi-directional DC/DC converter does not increase in the positive direction.
摘要:
The present invention relates to a system and method for controlling power distribution of a fuel cell hybrid electric vehicle. The system includes a fuel cell, a battery, a DC/DC converter connected to the battery for the input and output of power, an inverter connected to the DC/DC converter and fuel cell, a motor connected to the inverter, and a controller for estimating the required vehicle power. Further the present invention controls power transmission between the fuel cell, the battery, the DC/DC converter, and the inverter. The controller selectively performs control into one of a fuel cell mode, a battery discharge mode, a battery charge mode, and a regeneration mode.