Inverter DC bus bar assembly
    1.
    发明授权

    公开(公告)号:US10135355B2

    公开(公告)日:2018-11-20

    申请号:US14841526

    申请日:2015-08-31

    Abstract: Power inverter assemblies are provided herein for use with motor vehicles. An inverter assembly may have a symmetrical structure configured to convert DC input power to AC output power. The inverter assembly may include a housing enclosing a symmetrical DC input portion, a symmetrical AC output portion, a DC link capacitor, and a gate drive portion having a pair of power modules. The symmetrical DC input portion can include a DC input bus bar sub-assembly to which the DC link capacitor is coupled, and a second DC bus bar sub-assembly that may electrically couple the DC link capacitor with the power modules. The symmetrical AC output portion may include a three phase output AC bus bar sub-assembly to which the power modules can be electrically coupled. A cooling sub-assembly may be provided for cooling the power modules with fluid transfer using a coolant.

    Method for measuring electrical isolation of a vehicle chassis

    公开(公告)号:US10126344B2

    公开(公告)日:2018-11-13

    申请号:US14975289

    申请日:2015-12-18

    Inventor: Steven E. Schulz

    Abstract: A method for measuring the isolation resistance between a chassis and a battery terminal in an electric vehicle. The method can include measuring an open voltage (VP(open)) of the positive terminal; measuring an open voltage (VN(open)) of the negative terminal; measuring a voltage (VN(S1 closed)) between the negative terminal and the chassis with switch S1 closed; measuring a voltage (VP(S1 closed)) between the positive terminal and the chassis with switch S1 closed; calculating the ratio (VP(open)/VN(closed)) of the voltages VP(open) and VN(closed); calculating the open ratio of the open voltages (VP(open)/VN(open)); calculating the difference between the ratio (VP(S1 closed)/VN(S1 closed)) and the open ratio (VP(open)/VN(open)); and multiplying the value of the test resistor (R0) by the difference between the ratio (VP(S1 closed)/(VN(S1 closed)) and the open ratio (VP(S2 open)/VN(S1 open)) to obtain the isolation resistance.

    Methods and apparatus for generating current commands for an interior permanent magnet (IPM) motor

    公开(公告)号:US09768719B2

    公开(公告)日:2017-09-19

    申请号:US14859182

    申请日:2015-09-18

    CPC classification number: H02P21/22 H02P21/0089 H02P21/06 H02P21/12 H02P27/06

    Abstract: In one aspect, an apparatus includes a motor and inverter configured to provide input power to the motor and a data store comprising at least one entry including a first torque command, a first motor speed, and a first DC voltage value. The first torque command and the first motor speed and the first DC voltage value are associated with a first current output. The apparatus includes a processor configured to receive a torque input, a DC voltage input, and a motor speed input and determine an output current associated with the torque input, the DC voltage input, and the motor speed input, correct the output current to be within a voltage constraint of the motor when the DC voltage input is than a reference voltage at the motor and output the corrected output current to cause the inverter to provide the input power to the motor.

    METHOD FOR MEASURING ELECTRICAL ISOLATION OF A VEHICLE CHASSIS

    公开(公告)号:US20170176509A1

    公开(公告)日:2017-06-22

    申请号:US14975289

    申请日:2015-12-18

    Inventor: Steven E. Schulz

    CPC classification number: G01R31/006 G01R27/025 G01R31/007 G01R31/12 G01R31/14

    Abstract: A method for measuring the isolation resistance between a chassis and a battery terminal in an electric vehicle. The method can include measuring an open voltage (VP(open)) of the positive terminal; measuring an open voltage (VN(open)) of the negative terminal; measuring a voltage (VN(S1 closed)) between the negative terminal and the chassis with switch S1 closed; measuring a voltage (VP(S1 closed)) between the positive terminal and the chassis with switch S1 closed; calculating the ratio (VP(open)/VN(closed)) of the voltages VP(open) and VN(closed); calculating the open ratio of the open voltages (VP(open)/VN(open)); calculating the difference between the ratio (VP(S1 closed)/VN(S1 closed)) and the open ratio (VP(open)/VN(open)); and multiplying the value of the test resistor (R0) by the difference between the ratio (VP(S1 closed)/(VN(S1 closed)) and the open ratio (VP(S2 open)/VN(S1 open)) to obtain the isolation resistance.

    METHODS AND APPARATUS FOR GENERATING CURRENT COMMANDS FOR AN INTERIOR PERMANENT MAGNET (IPM) MOTOR

    公开(公告)号:US20170085200A1

    公开(公告)日:2017-03-23

    申请号:US14859182

    申请日:2015-09-18

    CPC classification number: H02P21/22 H02P21/0089 H02P21/06 H02P21/12 H02P27/06

    Abstract: In one aspect, an apparatus includes a motor and inverter configured to provide input power to the motor and a data store comprising at least one entry including a first torque command, a first motor speed, and a first DC voltage value. The first torque command and the first motor speed and the first DC voltage value are associated with a first current output. The apparatus includes a processor configured to receive a torque input, a DC voltage input, and a motor speed input and determine an output current associated with the torque input, the DC voltage input, and the motor speed input, correct the output current to be within a voltage constraint of the motor when the DC voltage input is than a reference voltage at the motor and output the corrected output current to cause the inverter to provide the input power to the motor.

    Inverter Assembly
    9.
    发明申请
    Inverter Assembly 审中-公开
    变频器总成

    公开(公告)号:US20170064864A1

    公开(公告)日:2017-03-02

    申请号:US14952829

    申请日:2015-11-25

    Abstract: Power inverter assemblies are provided herein for use with motor vehicles. An inverter assembly may have a symmetrical structure configured to convert DC input power to AC output power. The inverter assembly may include a housing enclosing a symmetrical DC input portion, a symmetrical AC output portion, a DC link capacitor, and a gate drive portion having a pair of power modules. The symmetrical DC input portion can include a DC input bus bar sub-assembly to which the DC link capacitor is coupled, and a second DC bus bar sub-assembly that may electrically couple the DC link capacitor with the power modules. The symmetrical AC output portion may include a three phase output AC bus bar sub-assembly to which the power modules can be electrically coupled. A cooling sub-assembly may be provided for cooling the power modules with fluid transfer using a coolant.

    Abstract translation: 本文提供的功率逆变器组件用于机动车辆。 逆变器组件可以具有被配置为将DC输入功率转换为AC输出功率的对称结构。 逆变器组件可以包括包围对称DC输入部分的壳体,对称AC输出部分,DC链路电容器和具有一对功率模块的栅极驱动部分。 对称DC输入部分可以包括直流链路电容器耦合到的DC输入母线子组件,以及可以将DC链路电容器与功率模块电耦合的第二DC母线子组件。 对称的AC输出部分可以包括三相输出AC母线子组件,功率模块可以电耦合到该组件。 可以提供冷却子组件,用于使用冷却剂流体转移来冷却功率模块。

    Methods and apparatus for generating current commands for an interior permanent magnet (IPM) motor

    公开(公告)号:US09762164B2

    公开(公告)日:2017-09-12

    申请号:US14859174

    申请日:2015-09-18

    CPC classification number: H02P21/12 H02P21/22 H02P27/06

    Abstract: In one aspect, an apparatus includes a motor and inverter configured to provide input power to the motor. The apparatus may also include a data store comprising at least one entry including a first torque command, a first motor speed, and a first DC voltage value, where the first torque command and the first motor speed and the first DC voltage value are associated with a first current output and a processor. The processor receives a torque input, a DC voltage input, and a motor speed input and identifies the current output associated with the torque input, the DC voltage input, and the motor speed input based on another motor speed different than the motor speed input and another DC voltage different than the DC voltage input and the motor speed input, and output the determined current output to cause the inverter to provide the input power to the motor.

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