公开(公告)号：EP3806313A1

公开(公告)日：2021-04-14

申请号：EP19810179.2

申请日：2019-05-16

申请人： Mitsubishi Electric Corporation

发明人： TAKAHARA, Takaaki ,  MIZUTANI, Hiroto ,  TOYODA, Hajime ,  IWABUKI, Hiroyasu ,  OTSUKA, Yasunori

IPC分类号： H02M7/48 ,  H02M1/34

摘要： A DC capacitor (10) and a leg (20) are connected in parallel to a high-voltage-side power line (PL) and a low-voltage-side power line (NL). The leg (20) includes a plurality of semiconductor switching elements (21, 22) connected in series between the power lines with an output end (Nout), connected to a load, between the plurality of semiconductor switching elements. An attenuator (30) for attenuating a resonance is connected to a main circuit loop (MLP1, MLP2) formed of the DC capacitor (10), the high-voltage-side power line (PL), the low-voltage-side power line (NL), a semiconductor switching element in ON state, and a drain-source parasitic capacitance of a semiconductor switching element in OFF state.

公开(公告)号：EP3410593A1

公开(公告)日：2018-12-05

申请号：EP17744326.4

申请日：2017-01-26

申请人： Mitsubishi Electric Corporation

发明人： MIZUTANI, Hiroto ,  KONDO, Ryota ,  TAKAHARA, Takaaki

IPC分类号： H02M3/28 ,  H02M7/12 ,  H02M7/48

CPC分类号： H02M1/4233 ,  H02M1/088 ,  H02M1/4258 ,  H02M3/33553 ,  H02M3/33576 ,  H02M3/3376 ,  H02M7/06 ,  H02M7/53871 ,  H02M2001/0009

摘要： This power conversion device includes: a rectification circuit; an inverter circuit having a full-bridge configuration, and having a DC capacitor, and first and second legs each of which has two switching elements connected in series to each other; a transformer; and a control circuit for controlling operation of the inverter circuit, wherein the control circuit controls an ON period for the first leg, thereby controlling increase/decrease in current flowing through a first rectification circuit from an AC input, and controls an ON period for the second leg and a phase shift amount between the ON period for the first leg and the ON period for the second leg, thereby controlling voltage of the DC capacitor to be constant. Thus, it becomes possible to achieve high-power-factor control and output power control at the same time by a single stage of full-bridge inverter circuit.

公开(公告)号：EP4266566A1

公开(公告)日：2023-10-25

申请号：EP20965999.4

申请日：2020-12-18

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： TANIGUCHI, Tomoyuki ,  MIZUTANI, Hiroto

IPC分类号： H02M3/155 ,  H02M3/28 ,  H02M7/12

摘要： In a controller (9) for a power converter (10), a switching frequency of a switching element (5) is determined on the basis of at least one of a magnetic parameter of a magnetic component (3) and an electric parameter of the power converter (10), and the switching frequency changes stepwise in each of M intervals on the basis of one of a predetermined time width and a predetermined electric quantity width, M being an integer not less than 2. A control frequency is a value obtained by dividing the switching frequency by an integer P not less than 2.

公开(公告)号：EP3734828A1

公开(公告)日：2020-11-04

申请号：EP17936427.8

申请日：2017-12-25

申请人： Mitsubishi Electric Corporation

发明人： MIZUTANI, Hiroto ,  TAKAHARA, Takaaki ,  IWABUKI, Hiroyasu

IPC分类号： H02M7/48

摘要： A control circuit (14) performs at least pulse width modulation control on a first leg (500) and selects to perform pulse width modulation control and pulse frequency modulation control, to perform pulse width modulation control and phase shift modulation control, or to perform pulse width modulation control, pulse frequency modulation control, and phase shift modulation control on a second leg (600), based on comparison of a voltage conversion ratio between DC voltage of a DC capacitor (4) and output voltage to a load with at least one threshold.