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公开(公告)号：EP3200336A4
公开(公告)日：2018-06-06
申请号：EP14902511
申请日：2014-09-26
发明人： ARISAWA KOICHI , YAMAKAWA TAKASHI , TAKAYAMA YUJI , UMEHARA SHIGEO , HIGASHIKAWA TOMOMI , TANIKAWA MAKOTO
CPC分类号： H02M1/12 , H02M1/08 , H02M1/4208 , H02M1/4225 , H02M1/44 , H02M7/06 , H02M2001/0048
摘要： The device 100 includes a rectifier circuit 3 that converts alternating-current power from an alternating-current power supply 1 into direct-current power; a short-circuit unit 30 that short-circuits the alternating-current power supply 1 via a reactor 2 connected between the alternating-current power supply 1 and the rectifier circuit 3; and a control unit 20 that controls an ON/OFF operation of the short-circuit unit 30 during a half cycle of the alternating-current power supply 1. The control unit 20 includes a driving-signal generating unit 21 that generates a driving signal Sa that is a switching pulse to control the ON/OFF operation of the short-circuit unit 30; and a pulse dividing unit 23 that divides the driving signal Sa into a plurality of switching pulses.
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公开(公告)号：EP3197044A4
公开(公告)日：2018-06-06
申请号：EP14902277
申请日：2014-09-17
摘要： To include a leak-current detecting unit 21 that detects a zero-phase current flowing from an electric-motor driving device 100, which drives an electric motor 5 with electric power from an alternating-current power supply 1, or the electric motor 5 to a ground E2, a leak-current control unit 22 that, on the basis of the zero-phase current detected by the leak-current detecting unit 21, generates a control signal having cyclicity synchronized with the alternating-current power supply 1, and an anti-phase generating unit 23 that generates an anti-phase current that is in anti-phase to the zero-phase current on the basis of the control signal from the leak-current control unit 22, and outputs the anti-phase current.
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公开(公告)号：EP3168974A4
公开(公告)日：2018-03-14
申请号：EP14897183
申请日：2014-07-08
CPC分类号： H02M7/06 , H02M1/12 , H02M1/42 , H02M1/4208 , H02M1/4225 , H02M1/44 , H02M7/217 , H02M2001/0009 , H02M2001/0025 , H02M2001/4283
摘要： A power conversion device (100) includes a rectifier circuit (3) that converts an AC power from an AC power supply (1), into a DC power, a short-circuit unit (30) that short-circuits the AC power supply (1) via a reactor (2) connected between the AC power supply (1) and the rectifier circuit (3), a control unit (20) that generates a plurality of drive signals (Sa) to control the short-circuit unit (30) in a half cycle of the AC power supply (1), and a smoothing capacitor (4). The control unit (20) stepwise varies threshold values that limit a value of a power-supply current of the AC power supply (1), in an on-section or an off-section of the plurality of drive signals (Sa).
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公开(公告)号：EP3203626A4
公开(公告)日：2018-05-02
申请号：EP14903091
申请日：2014-09-30
发明人： YAMAKAWA TAKASHI , ARISAWA KOICHI , TAKAYAMA YUJI , UMEHARA SHIGEO , HIGASHIKAWA TOMOMI , TANIKAWA MAKOTO
CPC分类号： H02M7/06 , H02M1/08 , H02M1/12 , H02M1/42 , H02M1/4225 , H02M2001/0009 , H02M2001/0048
摘要： A power converting apparatus (100) includes a rectifier (300) that converts alternating-current power from an alternating-current power supply (1) into direct-current power, a short-circuit unit (30) that short-circuits the alternating-current power supply (1) via a reactor (2), and a control unit (20) that controls a short-circuit operation of the short-circuit unit (30). The control unit (20) changes the number of times of the short-circuit operation during a half cycle of the alternating-current power supply (1) on the basis of a load condition and sets a period from a start to an end of the short-circuit operation during the half cycle of the alternating-current power supply (1) after the change of the number of times of the short-circuit operation to be different from a period from a start to an end of the short-circuit operation during the half cycle of the alternating-current power supply (1) before the change of the number of times of the short-circuit operation.
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