公开(公告)号：US08179082B2

公开(公告)日：2012-05-15

申请号：US12225864

申请日：2007-07-24

Applicant: Xing Li ,  Qiang Zuo ,  Yingsheng Xu ,  Mingqi Si

Inventor： Xing Li ,  Qiang Zuo ,  Yingsheng Xu ,  Mingqi Si

IPC: H02P1/16 ,  H02P1/30

CPC classification number: H02P1/40 ,  H02P1/28 ,  H02P1/30 ,  H02P27/16 ,  H02P27/18

Abstract: The invention relates to a soft starting method and system thereof in the way of wave-skipping with stepped frequency and stepless voltage regulating for a motor which can be applied to the large torque starting of AC motor under the condition of a power supply of a industrial frequency supply source and the safe starting of higher load. Trigger signals generated by a control system, in the soft starting method of the invention, act on five sets of anti-parallel thyristor valves connected between the power supply and the motor to conduct a pair of thyristors thereof according to a set frequency and sequence, and the motor is started from a standstill status to full speed in the way of wave-skipping by controlling the sets of the thyristor valves. The method may improve the starting torque for more than 10 times of the traditional motor soft starting of the voltage reduction and control the starting current for about two times of the rated current. The cost thereof is only 20-25% of similar frequency converter.

Abstract translation: 本发明涉及一种软启动方法及其系统，其以步进频率跳波和无级电压调节的方式，可应用于工业电源的交流电机的大扭矩启动 频率供电源和较高负载的安全启动。 在本发明的软启动方法中，由控制系统产生的触发信号作用于连接在电源和电动机之间的五套反并联晶闸管阀，以根据设定的频率和顺序导通其一对可控硅， 通过控制晶闸管阀组，电机以静止状态从全速开始，以跳波的方式进行。 该方法可以将起动转矩提高10倍以上，传统电机的软起动电压降低，起动电流约为额定电流的两倍。 其成本仅为类似变频器的20-25％。

公开(公告)号：US20090267552A1

公开(公告)日：2009-10-29

申请号：US12225864

申请日：2007-07-24

Applicant: Xing Li ,  Qiang Zuo ,  Yingsheng Xu ,  Mingqi Si

Inventor： Xing Li ,  Qiang Zuo ,  Yingsheng Xu ,  Mingqi Si

IPC: H02P1/30

CPC classification number: H02P1/40 ,  H02P1/28 ,  H02P1/30 ,  H02P27/16 ,  H02P27/18

Abstract: The invention relates to a soft starting method and system thereof in the way of wave-skipping with stepped frequency and stepless voltage regulating for a motor which can be applied to the large torque starting of AC motor under the condition of a power supply of a industrial frequency supply source and the safe starting of higher load. Trigger signals generated by a control system, in the soft starting method of the invention, act on five sets of anti-parallel thyristor valves connected between the power supply and the motor to conduct a pair of thyristors thereof according to a set frequency and sequence, and the motor is started from a standstill status to full speed in the way of wave-skipping by controlling the sets of the thyristor valves. The method may improve the starting torque for more than 10 times of the traditional motor soft starting of the voltage reduction and control the starting current for about two times of the rated current. The cost thereof is only 20-25% of similar frequency converter.

Abstract translation: 本发明涉及一种软启动方法及其系统，其以步进频率跳波和无级电压调节的方式，可应用于工业电源的交流电机的大扭矩启动 频率供电源和较高负载的安全启动。 在本发明的软启动方法中，由控制系统产生的触发信号作用于连接在电源和电动机之间的五套反并联晶闸管阀，以根据设定的频率和顺序导通其一对可控硅， 通过控制晶闸管阀组，电机以静止状态从全速开始，以跳波的方式进行。 该方法可以将起动转矩提高10倍以上，传统电机的软起动电压降低，起动电流约为额定电流的两倍。 其成本仅为类似变频器的20-25％。