| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor system wherein common mode noise is reduced. <P>SOLUTION: A power supply for the motor system comprises: AC power 10; a first transformer unit 12; a second transformer unit 14; an IGBT driving power supply 16 electrically connected to the first transformer unit 12; and a control power supply 18 electrically connected to the second transformer unit 14. In the driving power supply 16 and the control power supply 18, different transformers are used to prevent the ingress of common mode noise. The first transformer unit 12 and the second transformer unit 14 include a rectifier for providing DC-level voltage after a voltage ratio is changed at the first transformer unit 12 and the second transformer unit 14. <P>COPYRIGHT: (C)2009,JPO&INPIT |
