公开(公告)号：US06507167B2

公开(公告)日：2003-01-14

申请号：US09938537

申请日：2001-08-27

申请人： Gyeong-Hae Han ,  Jong-Ho Kim ,  Keon Sim ,  Hyung-Sang Lee ,  Dong-Hyuk Lee

发明人： Gyeong-Hae Han ,  Jong-Ho Kim ,  Keon Sim ,  Hyung-Sang Lee ,  Dong-Hyuk Lee

IPC分类号： H02P736

CPC分类号： H02M1/4225 ,  H02M2001/007 ,  Y02B70/126

摘要： The present invention relates to a power factor compensation device for a motor driving inverter which can improve a power factor of a voltage and a current inputted to the inverter driving a motor. The present invention detects a zero crossing point of an utility alternating current power, and outputs a driving signal corresponding to a plurality of sine wave form voltage values stored in a memory according to a detection result, when the zero crossing point of the utility alternating current power is detected in a state where the plurality of sine wave form voltage values corresponding to a voltage of the utility alternating current power and frequencies are stored in the memory. A switching transistor is switched according to the driving signal, and the voltage applied to the inverter is switched according to the switching operation, thereby improving the power factor.

公开(公告)号：US06281658B1

公开(公告)日：2001-08-28

申请号：US09475189

申请日：1999-12-30

申请人： Gyeong-Hae Han ,  Jong-Ho Kim ,  Keon Sim ,  Hyung-Sang Lee ,  Dong-Hyuk Lee

发明人： Gyeong-Hae Han ,  Jong-Ho Kim ,  Keon Sim ,  Hyung-Sang Lee ,  Dong-Hyuk Lee

IPC分类号： H02P742

CPC分类号： H02M1/4225 ,  H02M2001/007 ,  Y02B70/126

摘要： The present invention relates to a power factor compensation device for a motor driving inverter which can improve a power factor of a voltage and a current inputted to the inverter driving a motor. The present invention detects a zero crossing point of an utility alternating current power, and outputs a driving signal corresponding to a plurality of sine wave form voltage values stored in a memory according to a detection result, when the zero crossing point of the utility alternating current power is detected in a state where the plurality of sine wave form voltage values corresponding to a voltage of the utility alternating current power and frequencies are stored in the memory. A switching transistor is switched according to the driving signal, and the voltage applied to the inverter is switched according to the switching operation, thereby improving the power factor.

摘要翻译： 本发明涉及一种用于电动机驱动逆变器的功率因数补偿装置，其可以改善输入到驱动电动机的变频器的电压和电流的功率因数。 本发明检测公用交流电力的过零点，并根据检测结果输出与存储在存储器中的多个正弦波形电压值相对应的驱动信号，当公用交流电的过零点 在多个正弦波形成与电力交流电力和频率的电压对应的电压值被存储在存储器中的状态下被检测到电力。 根据驱动信号切换开关晶体管，并且根据开关操作切换施加到逆变器的电压，从而提高功率因数。