公开(公告)号：EP2957919B1

公开(公告)日：2017-10-18

申请号：EP13875091.4

申请日：2013-02-14

申请人： Mitsubishi Electric Corporation

发明人： ISHIHARA, Masahiro ,  ENDO, Satoshi ,  KOIZUMI, Yoshiaki ,  KUSUBE, Shinsaku ,  TAKATA, Masaki ,  TANIGUCHI, Yoshihiro

IPC分类号： G01R29/18 ,  G01R25/00 ,  G01R15/14 ,  G01R15/18

CPC分类号： G01R25/005 ,  G01R15/142 ,  G01R15/18 ,  G01R29/18 ,  G01R31/02

公开(公告)号：EP2957919A1

公开(公告)日：2015-12-23

申请号：EP13875091.4

申请日：2013-02-14

申请人： Mitsubishi Electric Corporation

发明人： ISHIHARA, Masahiro ,  ENDO, Satoshi ,  KOIZUMI, Yoshiaki ,  KUSUBE, Shinsaku ,  TAKATA, Masaki ,  TANIGUCHI, Yoshihiro

IPC分类号： G01R31/02 ,  G01R22/00

CPC分类号： G01R25/005 ,  G01R15/142 ,  G01R15/18 ,  G01R29/18 ,  G01R31/02

摘要： A voltage/current verifier (17e) computes, for each phase, a phase difference between phase voltage and phase current from the phase of phase voltage and the phase of phase current computed for each phase by a phase acquirer (17d), and determines conformity if all of the computed phase differences are within a preset range. A current/current verifier (17f) computes phase differences between phase currents from the phase of phase current computed for each phase by the phase acquirer (17d), and determines conformity if all of the computed phase differences are within 180°. A reporting device reports that a current transformer is incorrectly placed on a power line unless both the voltage/current verifier (17e) and the current/current verifier (17f) do not determine conformity.

公开(公告)号：EP2629410A1

公开(公告)日：2013-08-21

申请号：EP10858369.1

申请日：2010-10-13

申请人： Mitsubishi Electric Corporation

发明人： TAKATA, Masaki ,  TAKATA, Shigeo

IPC分类号： H02M7/12 ,  H02M7/06

CPC分类号： H02M7/219 ,  H02M1/12 ,  H02M1/4216 ,  H02M7/066 ,  H02P27/06 ,  H02P27/08 ,  Y02B70/126

摘要： To provide a three-phase AC to DC converter capable of reducing harmonic leakage current and the noise level, and an air-conditioning apparatus using the three-phase AC to DC converter.
A three-phase AC to DC converter includes a three-phase AC power supply, a three-phase rectifier bridge circuit that is connected to the three-phase AC power supply and includes rectifying devices which are connected in a bridge configuration, a three-phase full-bridge circuit that includes two serially-connected switching devices for each of three phases, the two serially-connected switching devices being connected at an output side of the three-phase rectifier bridge circuit, and includes reverse blocking diodes which are connected in parallel to the respective switching devices, a reactor that connects the three-phase full-bridge circuit to the three-phase AC power supply, a smoothing capacitor connected to an output side of the three-phase full-bridge circuit, DC voltage detection means that detects an output voltage, power supply phase detection means that detects a power supply phase of the three-phase AC power supply, and pulse width modulation means that outputs PWM signals which control the switching devices. The pulse width modulation means outputs the PWM signals on the basis of the power supply phase and the output voltage.

摘要翻译： 提供能够减少谐波泄漏电流和噪声电平的三相AC-DC转换器，以及使用三相AC-DC转换器的空调装置。 三相AC-DC转换器包括一个三相交流电源，一个连接到三相交流电源的三相整流桥电路，包括以桥式结构连接的整流装置， 该三相全桥电路包括三相串联的两个串联开关器件，两个串联的开关器件连接在三相整流桥电路的输出侧，并且包括反向阻塞二极管，其连接在 并联于各个开关装置，将三相全桥电路连接到三相交流电源的电抗器，连接到三相全桥电路的输出侧的平滑电容器，直流电压检测装置 检测输出电压，检测三相交流电源的电源相位的电源相位检测单元，以及输出PWM信号的脉宽调制单元 ch控制开关器件。 脉宽调制装置根据电源相位和输出电压输出PWM信号。