首页>
外国专利>
METHOD FOR INCREASING THE POWER FACTOR in regenerative braking electric locomotives AND DEVICE FOR ITS IMPLEMENTATION
METHOD FOR INCREASING THE POWER FACTOR in regenerative braking electric locomotives AND DEVICE FOR ITS IMPLEMENTATION
展开▼
机译:再生制动电力机车中功率因数的提高方法及其实现装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
FIELD: electricity.;SUBSTANCE: some ballast resistors of a unit of ballast resistors are shunted with a control switch at the moments, when the grid voltage exceeds a certain threshold level, or information may be used to lock the switch on a moment of grid voltage transition via zero, and the locked condition of the shunting switch is carried out in the range of time of 30-150 electric degrees from the moment of grid voltage transition through zero. A device comprises a transformer, a thyristor rectifying-inverter converter, a smoothening reactor, a traction electric motor, diodes, ballast resistors, shunting switches, a circuit of shunting control, at the same time resistors of the unit of ballast resistors are arranged in the form of two or more serially connected resistors, one or more of which is connected in parallel with the shunting switch and is shunted with a switch controlled by a control circuit. Ballast resistors may be arranged in the form of two or more parallel connected resistors, one or more of which are connected in series with a shunting switch. IGBT transistors may be used as switches.;EFFECT: higher power ration in recuperation mode.;5 cl, 3 dwg
展开▼