-
公开(公告)号：EP4318920A1
公开(公告)日：2024-02-07
申请号：EP22780015.8
申请日：2022-03-11
申请人： DENSO CORPORATION
发明人： KAZAOKA, Ryoya , SHINDO, Yusuke , KUBO, Shunichi , TOSHIYUKI, Ken
IPC分类号： H02M7/48
摘要： A power converter has a capacitor (31) and a power conversion unit (30) having a series-connected unit composed of an upper arm side switching element (QUH, QVH, QWH) and a lower arm side switching element (QUL, QVL, QWL). The capacitor is connected in parallel with the series connection unit. The power conversion unit supplies electric power to a motor (40). A controller (50) for the power conversion unit has a frequency characteristics estimation part (62) estimating frequency characteristics of a battery current of the battery when a current is flowing between the power convertor and the battery (10), a ripple current setting part (63) determining a ripple frequency of a ripple current contained in the battery current based on the frequency characteristics of the battery current, and a control part (59) performing a switching control of the switching elements based on the ripple frequency in order to generate the ripple current.
-
公开(公告)号：EP4383512A1
公开(公告)日：2024-06-12
申请号：EP22852783.4
申请日：2022-07-07
申请人： DENSO CORPORATION
发明人： TANI, Keiya , KUBO, Shunichi
摘要： A power conversion device is applicable to three or more charge storage units (11 to 16) connected in series. The power conversion device includes: a rotating electric machine (30) including a stator winding (31); an inverter (20) including upper and lower arm switches (SWH, SWL) and connecting the stator winding and the charge storage units; a high potential path (LP) connected to a high potential terminal of the upper arm switch; a low potential path (LN) connected to a low potential terminal of the lower arm switch; a neutral point path (LM) connected to a neutral point of the stator winding; and neutral point switches (SM1 to SM5) installed individually corresponding to cell connection points (PB 1 to PB5) each between a positive electrode terminal and a negative electrode terminal of adjacent charge storage units in the charge storage units, the neutral point switches connecting the cell connection points and the neutral point path.
-
公开(公告)号：EP4350940A1
公开(公告)日：2024-04-10
申请号：EP22811186.0
申请日：2022-05-16
申请人： DENSO CORPORATION
发明人： SHIRAKAWA, Kazuhiro , TANI, Keiya , KUBO, Shunichi
摘要： An electrical charging apparatus (10) working to electrically charge an electrical storage device (110) includes an electrical power converter (13, 20, 30) and a controller (70). The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.
-
-
搜索结果
3 条记录 (耗时 0.009 秒)
