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    • 8. 发明授权
    • Motor insulation deterioration detection device
    • 电机绝缘劣化检测装置
    • US07898264B2
    • 2011-03-01
    • US12623920
    • 2009-11-23
    • Shinichi HorikoshiHiroyasu SatoAkira Hirai
    • Shinichi HorikoshiHiroyasu SatoAkira Hirai
    • G01R31/02
    • G01R31/1263G01R31/343G01R31/346
    • Disclosed is an insulation deterioration detection device that can accurately detect insulation deterioration in multiple motors by a simple circuit configuration. When detecting insulation deterioration, one end A of a smoothing capacitor is connected via a first switch to ground, and the other end B is connected via a second switch to motor windings; in this condition, link voltage is measured by a voltage measuring circuit provided in a converter unit, and the measured link voltage value is transmitted to a microcomputer in each inverter unit via serial communication. Current flowing via motor insulation resistance Z1, Z2 is measured by a current measuring circuit provided in each inverter unit, and the microcomputer calculates the value of the insulation resistance Z1, Z2 from the link voltage value and the current value.
    • 公开了一种能够通过简单的电路配置精确地检测多个电动机的绝缘劣化的绝缘劣化检测装置。 当检测到绝缘劣化时,平滑电容器的一端A经由第一开关连接到地,另一端B经由第二开关连接到电动机绕组; 在这种情况下,通过设置在转换器单元中的电压测量电路来测量链路电压,并且通过串行通信将测量的链路电压值发送到每个逆变器单元中的微型计算机。 通过电动机绝缘电阻Z1,Z2流动的电流由设在每个逆变器单元中的电流测量电路测量,并且微计算机根据链路电压值和当前值计算绝缘电阻Z1,Z2的值。
    • 10. 发明申请
    • MOTOR INSULATION DETERIORATION DETECTION DEVICE
    • 电机绝缘检测装置
    • US20100171511A1
    • 2010-07-08
    • US12623920
    • 2009-11-23
    • Shinichi HorikoshiHiroyasu SatoAkira Hirai
    • Shinichi HorikoshiHiroyasu SatoAkira Hirai
    • G01R31/00
    • G01R31/1263G01R31/343G01R31/346
    • Disclosed is an insulation deterioration detection device that can accurately detect insulation deterioration in multiple motors by a simple circuit configuration. When detecting insulation deterioration, one end A of a smoothing capacitor is connected via a first switch to ground, and the other end B is connected via a second switch to motor windings; in this condition, link voltage is measured by a voltage measuring circuit provided in a converter unit, and the measured link voltage value is transmitted to a microcomputer in each inverter unit via serial communication. Current flowing via motor insulation resistance Z1, Z2 is measured by a current measuring circuit provided in each inverter unit, and the microcomputer calculates the value of the insulation resistance Z1, Z2 from the link voltage value and the current value.
    • 公开了一种能够通过简单的电路配置精确地检测多个电动机的绝缘劣化的绝缘劣化检测装置。 当检测到绝缘劣化时,平滑电容器的一端A经由第一开关连接到地,另一端B经由第二开关连接到电动机绕组; 在这种情况下,通过设置在转换器单元中的电压测量电路来测量链路电压,并且通过串行通信将测量的链路电压值发送到每个逆变器单元中的微型计算机。 通过电动机绝缘电阻Z1,Z2流动的电流由设在每个逆变器单元中的电流测量电路测量,并且微计算机根据链路电压值和当前值计算绝缘电阻Z1,Z2的值。