公开(公告)号：FI20080667A0

公开(公告)日：2008-12-19

申请号：FI20080667

申请日：2008-12-19

Applicant: KONE CORP

Inventor： PUTKINEN ESA ,  LEHTINEN HANNU

IPC: H02J20060101

Abstract: The invention relates to an arrangement for protecting a component in a power supply circuit. The arrangement comprises determination of an electric quantity constituting a load on the component, which electric quantity constituting a load on the component is determined repeatedly while the component is exposed to the load. The arrangement also comprises estimation of instantaneous load capacity of the component, which estimation of instantaneous load capacity is performed using a limitation criterion set for the load capacity of the component. This limitation criterion indicates the longest possible operating time of the component under a given loading condition. For the limitation criterion, a representation with respect to the electric quantity constituting a load on the component is provided, and a limitation criterion corresponding to the defined electric quantity constituting a load on the component is derived repeatedly from the said representation while the component is exposed to the load. The estimate of instantaneous load capacity of the component is thus determined on the basis of both the limitation criterion defined substantially at the estimation instant and the limitation criteria defined before this.

公开(公告)号：CA2463832C

公开(公告)日：2006-11-07

申请号：CA2463832

申请日：2002-09-24

Applicant: KONE CORP

Inventor： PUTKINEN ESA ,  JAHKONEN PEKKA

IPC: H02M3/157 ,  H02P7/29 ,  B66B1/32 ,  H01L23/36 ,  H01L23/46 ,  H02M3/158 ,  H02P3/08

Abstract: A control unit of controlling a direct-current load (M1), said control unit comprising a DC/DC bridge (B1) provided with controllable semiconductor switches (UT, UB, VT, VB, WT, WB) and having two bridge sections (B11, B12), one (B12) of which conducts direct current while the other one (B11) is controlled via PWM to regulate the current magnitude. The bridge section controlled via PWM consists of two bridge arms (B111, B112), and the semiconductor switches (UT, UB, VT, VB) in these bridge arms are turned on alternately.

公开(公告)号：HK1070475A1

公开(公告)日：2005-06-17

申请号：HK05103085

申请日：2005-04-12

Applicant: KONE CORP

Inventor： JAHKONEN PEKKA ,  PUTKINEN ESA

IPC: H02M20060101 ,  H02P7/29 ,  H02M3/158

Abstract: A control unit of controlling a direct-current load (M1), said control unit comprising a DC/DC bridge (B1) provided with controllable semiconductor switches (UT, UB, VT, VB, WT, WB) and having two bridge sections (B11, B12), one (B12) of which conducts direct current while the other one (B11) is controlled via PWM to regulate the current magnitude. The bridge section controlled via PWM consists of two bridge arms (B111, B112), and the semiconductor switches (UT, UB, VT, VB) in these bridge arms are turned on alternately.

公开(公告)号：FI112297B

公开(公告)日：2003-11-14

申请号：FI20012244

申请日：2001-11-19

Applicant: KONE CORP

Inventor： PUTKINEN ESA ,  JAHKONEN PEKKA

IPC: H02P7/29 ,  H02M3/158 ,  H02P7/292

Abstract: A control unit of controlling a direct-current load (M1), said control unit comprising a DC/DC bridge (B1) provided with controllable semiconductor switches (UT, UB, VT, VB, WT, WB) and having two bridge sections (B11, B12), one (B12) of which conducts direct current while the other one (B11) is controlled via PWM to regulate the current magnitude. The bridge section controlled via PWM consists of two bridge arms (B111, B112), and the semiconductor switches (UT, UB, VT, VB) in these bridge arms are turned on alternately.