JP2008072857A5 - - Google Patents

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Publication number
JP2008072857A5
JP2008072857A5 JP2006250445A JP2006250445A JP2008072857A5 JP 2008072857 A5 JP2008072857 A5 JP 2008072857A5 JP 2006250445 A JP2006250445 A JP 2006250445A JP 2006250445 A JP2006250445 A JP 2006250445A JP 2008072857 A5 JP2008072857 A5 JP 2008072857A5
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Japan
Prior art keywords
switching elements
value
motor
output
unit
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JP2006250445A
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Japanese (ja)
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JP4679477B2 (en
JP2008072857A (en
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Priority to JP2006250445A priority Critical patent/JP4679477B2/en
Priority claimed from JP2006250445A external-priority patent/JP4679477B2/en
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Publication of JP2008072857A5 publication Critical patent/JP2008072857A5/ja
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Claims (4)

交流電圧を整流する整流回路部と、
該整流回路部により整流された電圧を平滑するコンデンサと、
複数のスイッチング素子及び各スイッチング素子にそれぞれ並列接続された複数のダイオードよりなり、複数のスイッチング素子のオン・オフ動作により前記コンデンサの直流電圧を交流に変換し、出力側のモータに供給するインバータ部と、
前記複数のスイッチング素子のオン・オフを制御するインバータ制御部と、
前記インバータの各アームのローサイドの各スイッチング素子に流れる電流をそれぞれ検出し、その値を電圧出力する複数の電流検出部と、
該複数の電流検出部により出力された電圧を加算する加算回路部と、
該加算回路部の出力値と予め設定された第1の値とを比較し、その比較結果に基づいて前記複数のスイッチング素子のオン・オフ動作を停止させる過電流検出信号を前記インバータ制御部に出力する比較器と
を備えたことを特徴とするモータ駆動装置。
A rectifier circuit that rectifies an AC voltage;
A capacitor for smoothing the voltage rectified by the rectifier circuit unit;
An inverter unit comprising a plurality of switching elements and a plurality of diodes connected in parallel to the respective switching elements, and converts a DC voltage of the capacitor into an alternating current by an on / off operation of the plurality of switching elements, and supplies the alternating current to the motor on the output side When,
An inverter control unit for controlling on / off of the plurality of switching elements;
A plurality of current detection units that detect currents flowing through the switching elements on the low side of the arms of the inverter unit and output the values of the currents;
An adder circuit that adds the voltages output by the plurality of current detectors;
An overcurrent detection signal for comparing the output value of the adding circuit unit with a preset first value and stopping on / off operations of the plurality of switching elements based on the comparison result is sent to the inverter control unit. A motor drive device comprising a comparator for outputting.
前記インバータ部の出力側のモータに直流ブラシレスモータが使用されていることを特徴とする請求項1記載のモータ駆動装置。   2. The motor driving apparatus according to claim 1, wherein a DC brushless motor is used as a motor on an output side of the inverter unit. 前記加算回路部の出力値と予め設定された第2の値とを比較し、その比較結果に基づいて前記複数のスイッチング素子のオン・オフ動作を停止させる同期異常検出信号を前記インバータ制御部に出力する比較器を備えたことを特徴とする請求項1又は2記載のモータ駆動装置。   The output value of the adding circuit unit is compared with a preset second value, and a synchronization abnormality detection signal for stopping the on / off operation of the plurality of switching elements based on the comparison result is sent to the inverter control unit. 3. The motor driving apparatus according to claim 1, further comprising a comparator for outputting. 前記第1の値は、力行電流に対応した値であり、また、前記第2の値は、回生電流に対応した値であることを特徴とする請求項3記載のモータ駆動装置。4. The motor driving device according to claim 3, wherein the first value is a value corresponding to a power running current, and the second value is a value corresponding to a regenerative current.
JP2006250445A 2006-09-15 2006-09-15 Motor drive device Active JP4679477B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006250445A JP4679477B2 (en) 2006-09-15 2006-09-15 Motor drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006250445A JP4679477B2 (en) 2006-09-15 2006-09-15 Motor drive device

Publications (3)

Publication Number Publication Date
JP2008072857A JP2008072857A (en) 2008-03-27
JP2008072857A5 true JP2008072857A5 (en) 2008-07-24
JP4679477B2 JP4679477B2 (en) 2011-04-27

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Family Applications (1)

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JP2006250445A Active JP4679477B2 (en) 2006-09-15 2006-09-15 Motor drive device

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JP (1) JP4679477B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6266298B2 (en) * 2013-10-23 2018-01-24 新電元工業株式会社 Current detection circuit and motor control device
JP6295426B2 (en) * 2014-06-02 2018-03-20 パナソニックIpマネジメント株式会社 Washing machine
JP6528080B2 (en) * 2015-06-26 2019-06-12 パナソニックIpマネジメント株式会社 Washing machine
CN106374731B (en) * 2015-07-23 2019-10-18 乐星产电(无锡)有限公司 Variable frequency drive, over-current protection method and device
WO2017090079A1 (en) * 2015-11-24 2017-06-01 三菱電機株式会社 Inverter device and air conditioner
US10218348B2 (en) * 2016-01-22 2019-02-26 Mitsubishi Electric Corporation Control circuit
KR102014185B1 (en) * 2018-03-27 2019-08-26 엘에스산전 주식회사 Apparatus for determining peak current in inverter
CN114512961B (en) * 2022-02-22 2023-11-10 北京控制工程研究所 Limit working condition self-adaptive protection design method suitable for deep space sampling high-power direct current motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001320894A (en) * 2000-05-08 2001-11-16 Matsushita Electric Ind Co Ltd Motor drive device
JP4062074B2 (en) * 2002-01-28 2008-03-19 株式会社デンソー Control method of three-phase brushless DC motor

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