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Patent Searching and Data


Title:
POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2020137302
Kind Code:
A
Abstract:
To provide a power conversion device that prevents a failure from being caused by wiring trouble between a thyristor and a thyristor drive circuit.SOLUTION: A power conversion device includes: a rectifier; smoothing means for smoothing output voltage of the rectifier; a resistor for suppressing inrush current to the smoothing means at the time of application of power; a thyristor; and a board. The board includes: a thyristor drive circuit for driving the thyristor; and a control circuit for controlling the thyristor drive circuit. The board is connected to the thyristor using wiring. The thyristor drive circuit includes: a switch for making a gate signal of the thyristor flow according to a signal from the control circuit; and a voltage detector for detecting abnormality of voltage between a gate and a cathode of the thyristor.SELECTED DRAWING: Figure 3

Inventors:
TAKADA NAOKI
Application Number:
JP2019029728A
Publication Date:
August 31, 2020
Filing Date:
February 21, 2019
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
International Classes:
H02M1/00; H02M1/08
Domestic Patent References:
JPH1141943A1999-02-12
JPH01278256A1989-11-08
Attorney, Agent or Firm:
Aoritsu patent business corporation