JP2016010275A - Control device for motor - Google Patents

Control device for motor Download PDF

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JP2016010275A
JP2016010275A JP2014130860A JP2014130860A JP2016010275A JP 2016010275 A JP2016010275 A JP 2016010275A JP 2014130860 A JP2014130860 A JP 2014130860A JP 2014130860 A JP2014130860 A JP 2014130860A JP 2016010275 A JP2016010275 A JP 2016010275A
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switching element
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JP6308551B2 (en
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敬尋 三ツ井
Takahiro Mitsui
敬尋 三ツ井
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Toyo Electric Manufacturing Ltd
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Abstract

PROBLEM TO BE SOLVED: To match ON/OFF timing between switching elements of power generation brake devices connected in parallel.SOLUTION: In place of a voltage detector 17, a comparator 18 and a drive circuit 4a, a voltage detector for detecting a DC voltage of a smoothing capacitor 13 of an inverter device 16, a comparator which compares output of the voltage detector with a limit value of a DC voltage and outputs 1 in the case where the output of the voltage detector is greater than the limit value of the DC voltage or outputs 0 in the case where the output of the voltage detector is smaller than the limit value of the DC voltage, and a first transmitter 7 for transmitting the output of the comparator by communication are included in the inverter device. A second receiver 10a which outputs a received value in the case where the output of the first transmitter can be received or outputs 0 in the case where the output of the first transmitter cannot be received, and a drive circuit which outputs a signal for turning off a switching element 3a in the case where the output of the second receiver is 0 or outputs a signal for turning on the switching element in the case where the output of the second receiver is 1 are included in a power generation brake device 1a.

Description

本発明は、電動機の制御装置に関するもので、複数台の発電制動装置を適用する場合に各発電制動装置の動作タイミングを合わせる電動機の制御装置を提案するものである。   The present invention relates to a motor control device, and proposes a motor control device that matches the operation timing of each power braking device when a plurality of power braking devices are applied.

図２に一例として従来技術のブロック図を示し、この図に基づいて従来技術を説明する。
インバータ装置１６’は、整流器１２と平滑コンデンサ１３と電力変換器１４とにより構成される。 FIG. 2 shows a block diagram of the prior art as an example, and the prior art will be described based on this figure.
The inverter device 16 ′ includes a rectifier 12, a smoothing capacitor 13, and a power converter 14.

整流器１２は、交流電源１１の交流電力を整流し直流電力を出力する。平滑コンデンサ１３は、整流器１２の出力である直流電力を平滑化する。電力変換器１４は、平滑コンデンサ１３の直流電力を電動機１５に供給する。   The rectifier 12 rectifies the AC power of the AC power supply 11 and outputs DC power. The smoothing capacitor 13 smoothes the DC power that is the output of the rectifier 12. The power converter 14 supplies the DC power of the smoothing capacitor 13 to the electric motor 15.

発電制動装置１ａ’は、電圧検出器１７ａ’と比較器１８ａ’と駆動回路４ａ’とスイッチング素子３ａと制動抵抗２ａとにより構成され、発電制動装置１ａ’と同じ発電制動装置１ｂ’は、電圧検出器１７ｂ’と比較器１８ｂ’と駆動回路４ｂ’とスイッチング素子３ｂと制動抵抗２ｂとにより構成され、インバータ装置１６’の平滑コンデンサ１３とそれぞれ並列に接続する。   The dynamic braking device 1a ′ includes a voltage detector 17a ′, a comparator 18a ′, a drive circuit 4a ′, a switching element 3a, and a braking resistor 2a. The dynamic braking device 1b ′, which is the same as the dynamic braking device 1a ′, The detector 17b ′, the comparator 18b ′, the drive circuit 4b ′, the switching element 3b, and the braking resistor 2b are connected in parallel with the smoothing capacitor 13 of the inverter device 16 ′.

電圧検出器１７ａ’は、平滑コンデンサ１３の直流電圧を検出する。比較器１８ａ’は、電圧検出器１７ａ’の検出した平滑コンデンサ１３の直流電圧と直流電圧の制限値Ｖｄｂとを入力し、平滑コンデンサ１３の直流電圧が直流電圧の制限値Ｖｄｂより大きければ１を、平滑コンデンサ１３の直流電圧が直流電圧の制限値Ｖｄｂより小さければ０を出力する。   The voltage detector 17 a ′ detects the DC voltage of the smoothing capacitor 13. The comparator 18a ′ inputs the DC voltage of the smoothing capacitor 13 detected by the voltage detector 17a ′ and the DC voltage limit value Vdb, and 1 if the DC voltage of the smoothing capacitor 13 is greater than the DC voltage limit value Vdb. If the DC voltage of the smoothing capacitor 13 is smaller than the DC voltage limit value Vdb, 0 is output.

駆動回路４ａ’は、比較器１８ａ’の出力を入力し、比較器１８ａ’の出力が１ならスイッチング素子３ａをオンする信号を出力し、比較器１８ａ’の出力が０ならスイッチング素子３ａをオフする信号を出力する。   The drive circuit 4a ′ receives the output of the comparator 18a ′, outputs a signal for turning on the switching element 3a if the output of the comparator 18a ′ is 1, and turns off the switching element 3a if the output of the comparator 18a ′ is 0. Output a signal.

スイッチング素子３ａと制動抵抗２ａとは直列接続し、平滑コンデンサ１３と並列に接続する。スイッチング素子３ａは、駆動回路４ａ’の出力によりオン／オフし、スイッチング素子３ａがオンの時は、制動抵抗２ａにより平滑コンデンサ１３の直流電力を消費する。   The switching element 3a and the braking resistor 2a are connected in series and connected in parallel with the smoothing capacitor 13. The switching element 3a is turned on / off by the output of the drive circuit 4a '. When the switching element 3a is on, the DC power of the smoothing capacitor 13 is consumed by the braking resistor 2a.

ここで、従来技術の電動機の制御装置の動作について説明する。
インバータ装置１６’により電動機１５を急減速または急停止した場合や回生運転をした場合に、電動機１５は回生電力を発生する。整流器１２はダイオード整流であり、平滑コンデンサ１３の直流電力を交流電源１１に戻せない。よって、回生電力が発生すると、平滑コンデンサ１３の直流電圧が上昇する。そこで、発電制動装置１ａ’は、直流電圧の制限値Ｖｄｂより平滑コンデンサ１３の直流電圧が大きい場合はスイッチング素子３ａをオンし、制動抵抗２ａにより平滑コンデンサ１３の直流電力を消費することで、平滑コンデンサ１３の直流電圧が過電圧とならないようにする。 Here, the operation of the conventional motor control device will be described.
When the motor 15 is suddenly decelerated or suddenly stopped by the inverter device 16 ′ or when a regenerative operation is performed, the motor 15 generates regenerative power. The rectifier 12 is diode rectification, and the DC power of the smoothing capacitor 13 cannot be returned to the AC power supply 11. Therefore, when regenerative power is generated, the DC voltage of the smoothing capacitor 13 increases. Therefore, the power generation braking device 1a ′ turns on the switching element 3a when the DC voltage of the smoothing capacitor 13 is larger than the DC voltage limit value Vdb and consumes the DC power of the smoothing capacitor 13 by the braking resistor 2a. The DC voltage of the capacitor 13 is prevented from becoming an overvoltage.

発電制動装置１ｂ’の電圧検出器１７ｂ’と比較器１８ｂ’と駆動回路４ｂ’とスイッチング素子３ｂと制動抵抗２ｂとは、発電制動装置１ａ’の電圧検出器１７ａ’と比較器１８ａ’と駆動回路４ａ’とスイッチング素子３ａと制動抵抗２ａと同じ動作となる。   The voltage detector 17b ′, the comparator 18b ′, the drive circuit 4b ′, the switching element 3b, and the braking resistor 2b of the dynamic braking device 1b ′ are driven by the voltage detector 17a ′ and the comparator 18a ′ of the dynamic braking device 1a ′. The operation is the same as that of the circuit 4a ′, the switching element 3a, and the braking resistor 2a.

インバータ装置１６’と電動機１５とにより発生される回生電力を発電制動装置１ａ’の１台では消費できない場合は、発電制動装置１ｂ’が必要となる。さらに必要となれば３台以上の発電制動装置を適用する。   If the regenerative power generated by the inverter device 16 ′ and the electric motor 15 cannot be consumed by one of the dynamic braking devices 1 a ′, the dynamic braking device 1 b ′ is necessary. If necessary, three or more dynamic braking devices are applied.

これは、回生電力に応じた発電制動装置をその都度設計するよりも、任意の回生電力に応じた発電制動装置を数機種準備し必要な回生電力に応じて複数台適用する方が、設計期間の短縮化や管理・保守に有利となるためである。   Rather than designing a dynamic braking device according to regenerative power each time, it is better to prepare several types of dynamic braking devices according to any regenerative power and apply multiple units according to the required regenerative power. This is because it is advantageous for shortening and management / maintenance.

特開平１１−３０８８８１号公報JP-A-11-308881

発電制動装置１ａ’と発電制動装置１ｂ’とは、それぞれ平滑コンデンサ１３の直流電圧を検出して直流電圧の制限値Ｖｄｂと比較することにより、スイッチング素子３ａとスイッチング素子３ｂとをオン／オフさせている。理想的にはスイッチング素子３ａとスイッチング素子３ｂとは同時にオン／オフするはずであるが、実際には部品公差や温度等の周囲環境により電圧検出器１７ａ’と電圧検出器１７ｂ’ とが検出する直流電圧の値にずれが生じる。よって、比較器１８ａ’と比較器１８ｂ’との結果に違いが出ることにより、スイッチング素子３ａのオン／オフとスイッチング素子３ｂのオン／オフのタイミングがずれる。スイッチング素子３ａとスイッチング素子３ｂとのオン／オフのタイミングがずれると、どちらかの発電制動装置の負担が大きくなり、負担が大きい発電制動装置に含まれる部品の劣化をはやめ、各発電制動装置の寿命に差が生じることとなる。   The dynamic braking device 1a ′ and the dynamic braking device 1b ′ turn on / off the switching element 3a and the switching element 3b by detecting the DC voltage of the smoothing capacitor 13 and comparing it with the DC voltage limit value Vdb. ing. Ideally, the switching element 3a and the switching element 3b should be turned on / off at the same time, but in actuality, the voltage detector 17a 'and the voltage detector 17b' detect depending on the surrounding environment such as component tolerance and temperature. Deviation occurs in the value of the DC voltage. Therefore, the difference between the results of the comparator 18a 'and the comparator 18b' causes the on / off timing of the switching element 3a to be shifted from the on / off timing of the switching element 3b. If the ON / OFF timings of the switching element 3a and the switching element 3b are shifted, the load on one of the dynamic braking devices increases, and the deterioration of components included in the large dynamic braking device is stopped. There will be a difference in life.

上記問題点を解決するために、請求項１に示す如く、交流電源の交流電力を直流電力に変換する整流器と、該整流器に並列接続する平滑コンデンサと、前記直流電力を電動機に供給する電力変換器とからなるインバータ装置と、直列接続して前記平滑コンデンサと並列接続した制動抵抗とスイッチング素子と、前記平滑コンデンサの直流電圧を検出する電圧検出器と、該電圧検出器の出力と前記直流電圧の制限値とを比較し前記電圧検出器の出力が前記直流電圧の制限値より大きい場合は１を出力し前記電圧検出器の出力が前記直流電圧の制限値より小さい場合は０を出力する比較器と、該比較器の出力が０の場合に前記スイッチング素子をオフする信号を出力し前記比較器の出力が１の場合に前記スイッチング素子をオンする信号を出力する駆動回路とからなる発電制動装置とにより構成された電動機の制御装置において、前記電圧検出器と前記比較器と前記駆動回路との代わりに前記平滑コンデンサの直流電圧を検出する電圧検出器と、該電圧検出器の出力と前記直流電圧の制限値とを比較し前記電圧検出器の出力が前記直流電圧の制限値より大きい場合は１を出力し前記電圧検出器の出力が前記直流電圧の制限値より小さい場合は０を出力する比較器と、該比較器の出力を通信で送信する第1送信機とを前記インバータ装置に具備し、該第１送信機の出力が受信できた場合に受信した値を出力し前記第１送信機の出力が受信できなかった場合に０を出力する第２受信機と、該第２受信機の出力が０の場合に前記スイッチング素子をオフする信号を出力し前記第２受信機の出力が１の場合に前記スイッチング素子をオンする信号を出力する駆動回路とを前記発電制動装置に具備したものである。   In order to solve the above problem, as shown in claim 1, a rectifier that converts AC power of an AC power source into DC power, a smoothing capacitor that is connected in parallel to the rectifier, and power conversion that supplies the DC power to an electric motor An inverter device comprising a voltage detector, a braking resistor and a switching element connected in series and connected in parallel with the smoothing capacitor, a voltage detector for detecting a DC voltage of the smoothing capacitor, an output of the voltage detector and the DC voltage A comparison is made to output 1 if the output of the voltage detector is greater than the limit value of the DC voltage and 0 if the output of the voltage detector is less than the limit value of the DC voltage. And a signal for turning off the switching element when the output of the comparator is 0, and a signal for turning on the switching element when the output of the comparator is 1. In a motor control device comprising a power generation braking device comprising a drive circuit, a voltage detector for detecting a DC voltage of the smoothing capacitor instead of the voltage detector, the comparator and the drive circuit, and The output of the voltage detector is compared with the limit value of the DC voltage. When the output of the voltage detector is larger than the limit value of the DC voltage, 1 is output and the output of the voltage detector is the limit value of the DC voltage. If it is smaller, a comparator that outputs 0 and a first transmitter that transmits the output of the comparator by communication are provided in the inverter device, and received when the output of the first transmitter is received. A second receiver that outputs a value and outputs 0 when the output of the first transmitter cannot be received, and outputs a signal that turns off the switching element when the output of the second receiver is 0 The output of the second receiver is Wherein it is a driving circuit for outputting an ON signal of the switching element that is provided in the dynamic braking device in the case of.

また、請求項２に示す如く、前記発電制動装置の異常を検出した場合に０と１とを除いた異常の内容を示す任意の値を出力し前記発電制動装置が正常の場合に１を出力する異常検出器と、該異常検出器の出力を通信で送信する第２送信機とを前記発電制動装置に具備し、該第２送信機の出力が受信できた場合に受信した値を出力し前記第２送信機の出力が受信できなかった場合に０を出力する第１受信機と、該第１受信機の出力が０または前記異常の内容を示す任意の値の場合は前記発電制動装置が異常と判定し前記第１受信機の出力が１の場合は前記発電制動装置が正常と判定する異常判定器とを前記インバータ装置に具備したものである。   Further, as described in claim 2, when an abnormality of the dynamic braking device is detected, an arbitrary value indicating the content of the abnormality excluding 0 and 1 is output, and when the dynamic braking device is normal, 1 is output. And a second transmitter for transmitting the output of the abnormality detector by communication, and when the output of the second transmitter is received, the received value is output. A first receiver that outputs 0 when the output of the second transmitter cannot be received, and the dynamic braking device when the output of the first receiver is 0 or an arbitrary value indicating the content of the abnormality Is determined to be abnormal, and when the output of the first receiver is 1, the inverter device includes an abnormality determination unit that determines that the dynamic braking device is normal.

本発明により、並列接続した各発電制動装置のスイッチング素子のオン／オフするタイミングを合わせることができる。   According to the present invention, the timing for turning on / off the switching elements of the dynamic braking devices connected in parallel can be matched.

本発明の実施例１を示した説明図である。It is explanatory drawing which showed Example 1 of this invention. 従来の技術の一例を示した説明図である。It is explanatory drawing which showed an example of the prior art.

本発明により、並列接続した各発電制動装置のスイッチング素子のオン／オフするタイミングを合わせることができるとともに、発電制動装置の信頼性およびメンテナンス性の向上ができた。   According to the present invention, the timing for turning on / off the switching elements of the power braking devices connected in parallel can be matched, and the reliability and maintenance of the power braking device can be improved.

図１は、本発明の請求項１および請求項２に関する１実施例である。
図２の従来技術と構成が異なるのは、駆動回路４ａと駆動回路４ｂと電圧検出器１７と比較器１８とである。
また、異常検出器５ａと異常検出器５ｂと異常判定器６と第１送信機７と第１受信機８と第２送信機９ａと第２送信機９ｂと第２受信機１０ａと第２受信機１０ｂとが追加されている。 FIG. 1 shows an embodiment relating to claims 1 and 2 of the present invention.
2 differs from the prior art in FIG. 2 in a drive circuit 4a, a drive circuit 4b, a voltage detector 17, and a comparator 18.
Also, the abnormality detector 5a, the abnormality detector 5b, the abnormality determination unit 6, the first transmitter 7, the first receiver 8, the second transmitter 9a, the second transmitter 9b, the second receiver 10a, and the second reception. A machine 10b is added.

インバータ装置１６は、整流器１２と平滑コンデンサ１３と電力変換器１４と電圧検出器１７と比較器１８と第１送信機７と第１受信機８と異常判定器６とにより構成される。   The inverter device 16 includes a rectifier 12, a smoothing capacitor 13, a power converter 14, a voltage detector 17, a comparator 18, a first transmitter 7, a first receiver 8, and an abnormality determiner 6.

電圧検出器１７は、平滑コンデンサ１３の直流電圧を検出する。比較器１８は、電圧検出器１７の検出した平滑コンデンサ１３の直流電圧と直流電圧の制限値Ｖｄｂとを入力し、平滑コンデンサ１３の直流電圧が直流電圧の制限値Ｖｄｂより大きければ１を、平滑コンデンサ１３の直流電圧が直流電圧の制限値Ｖｄｂより小さければ０を出力する。第１送信機７は、比較器１８の出力を第２受信機１０ａへ通信で送信する。   The voltage detector 17 detects the DC voltage of the smoothing capacitor 13. The comparator 18 inputs the DC voltage of the smoothing capacitor 13 detected by the voltage detector 17 and the DC voltage limit value Vdb. If the DC voltage of the smoothing capacitor 13 is greater than the DC voltage limit value Vdb, 1 is smoothed. If the DC voltage of the capacitor 13 is smaller than the DC voltage limit value Vdb, 0 is output. The first transmitter 7 transmits the output of the comparator 18 to the second receiver 10a by communication.

発電制動装置１ａは、第２受信機１０ａと駆動回路４ａとスイッチング素子３ａと制動抵抗２ａと異常検出器５ａと第２送信機９ａとにより構成され、発電制動装置１ａと同じ発電制動装置１ｂは、第２受信機１０ｂと駆動回路４ｂとスイッチング素子３ｂと制動抵抗２ｂと異常検出器５ｂと第２送信機９ｂとにより構成され、インバータ装置１６の平滑コンデンサ１３とそれぞれ並列に接続する。   The dynamic braking device 1a includes a second receiver 10a, a drive circuit 4a, a switching element 3a, a braking resistor 2a, an abnormality detector 5a, and a second transmitter 9a. The dynamic braking device 1b, which is the same as the dynamic braking device 1a, The second receiver 10b, the drive circuit 4b, the switching element 3b, the braking resistor 2b, the abnormality detector 5b, and the second transmitter 9b are connected in parallel to the smoothing capacitor 13 of the inverter device 16, respectively.

第２受信機１０ａは、第１送信機７の出力を受信できた場合に受信した値を出力し、第１送信機７の出力を受信できなかった場合に０を出力する。駆動回路４ａは、第２受信機１０ａの出力を入力し、第２受信機１０ａの出力が１ならスイッチング素子３ａをオンする信号を出力し、第２受信機１０ａの出力が０ならスイッチング素子３ａをオフする信号を出力する。   The second receiver 10a outputs the received value when the output of the first transmitter 7 can be received, and outputs 0 when the output of the first transmitter 7 cannot be received. The drive circuit 4a receives the output of the second receiver 10a, outputs a signal for turning on the switching element 3a if the output of the second receiver 10a is 1, and the switching element 3a if the output of the second receiver 10a is 0. A signal to turn off is output.

異常検出器５ａは、スイッチング素子３ａの過熱や過電流等の発電制動装置１ａの異常を検出した場合に０と１とを除いた異常の内容を示す任意の値を出力し、発電制動装置１ａが正常の場合に１を出力する。第２送信機９ａは、異常検出器５ａの出力を第１受信機８へ通信で送信する。   The abnormality detector 5a outputs an arbitrary value indicating the content of the abnormality excluding 0 and 1 when the abnormality of the dynamic braking device 1a such as overheating or overcurrent of the switching element 3a is detected, and the dynamic braking device 1a When 1 is normal, 1 is output. The second transmitter 9a transmits the output of the abnormality detector 5a to the first receiver 8 by communication.

第１受信機８は、第２送信機９ａの出力を受信できた場合に受信した値を出力し、第２送信機９ａの出力を受信できなかった場合に０を出力する。異常判定器６は、第１受信機８の出力が０または異常の内容を示す任意の値の場合に発電制動装置１ａは異常であると判定し、第１受信機８の出力が１の場合に発電制動装置１ａは正常であると判定する。   The first receiver 8 outputs the received value when the output of the second transmitter 9a can be received, and outputs 0 when the output of the second transmitter 9a cannot be received. The abnormality determiner 6 determines that the dynamic braking device 1a is abnormal when the output of the first receiver 8 is 0 or an arbitrary value indicating the content of the abnormality, and the output of the first receiver 8 is 1. It is determined that the dynamic braking device 1a is normal.

発電制動装置１ｂの第２受信機１０ｂと駆動回路４ｂとスイッチング素子３ｂと制動抵抗２ｂと異常検出器５ｂと第２送信機９ｂとは、発電制動装置１ａの第２受信機１０ａと駆動回路４ａとスイッチング素子３ａと制動抵抗２ａと異常検出器５ａと第２送信機９ａと同じ動作となる。   The second receiver 10b, the driving circuit 4b, the switching element 3b, the braking resistor 2b, the abnormality detector 5b, and the second transmitter 9b of the dynamic braking device 1b are the second receiver 10a and the driving circuit 4a of the dynamic braking device 1a. The switching element 3a, the braking resistor 2a, the abnormality detector 5a, and the second transmitter 9a perform the same operation.

以下に、並列接続した各発電制動装置のスイッチング素子のオン／オフするタイミングを合わせることができる理由を説明する。   The reason why the switching elements of the dynamic braking devices connected in parallel can be turned on / off will be described below.

従来の技術では、各発電制動装置の電圧検出器１７ａ’と電圧検出器１７ｂ’とで平滑コンデンサ１３の直流電圧を検出し、各発電制動装置の比較器１８ａ’と比較器１８ｂ’とで各発電制動装置のスイッチング素子のオン／オフを決定している。そのため、各発電制動装置が検出する直流電圧のずれによりスイッチング素子のオン／オフするタイミングが合わなかった。   In the conventional technique, the DC voltage of the smoothing capacitor 13 is detected by the voltage detector 17a ′ and the voltage detector 17b ′ of each power braking device, and each of the comparator 18a ′ and the comparator 18b ′ of each power braking device is detected. ON / OFF of the switching element of the dynamic braking device is determined. For this reason, the timing for turning on / off the switching element is not suitable due to the difference in the DC voltage detected by each dynamic braking device.

本発明においては、インバータ装置１６内の電圧検出器１７で平滑コンデンサ１３の直流電圧を検出し、比較器１８で各発電制動装置のスイッチング素子のオン／オフを決定する。これにより、比較器１８により出力される各発電制動装置のスイッチング素子３ａとスイッチング素子３ｂとのオン／オフする信号が同じとなることからタイミングを合わせることが可能となる。   In the present invention, the DC voltage of the smoothing capacitor 13 is detected by the voltage detector 17 in the inverter device 16, and the ON / OFF of the switching element of each dynamic braking device is determined by the comparator 18. As a result, the ON / OFF signals of the switching element 3a and the switching element 3b of each dynamic braking device output by the comparator 18 are the same, so that the timing can be adjusted.

以上より、スイッチング素子３ａとスイッチング素子３ｂとのオン／オフのタイミングが合うことにより、発電制動装置１ａと発電制動装置１ｂとの負担が等しくなり、各発電制動装置に含まれる部品の劣化も同等となる。これにより、比較的短寿命部品についての定期交換を同じ時期とすることができる。   As described above, when the ON / OFF timings of the switching element 3a and the switching element 3b are matched, the load on the dynamic braking device 1a and the dynamic braking device 1b becomes equal, and deterioration of components included in each dynamic braking device is also equal. It becomes. Thereby, the periodic replacement | exchange about a comparatively short life part can be made into the same time.

次に、発電制動装置の信頼性の向上が可能となる理由を説明する。   Next, the reason why the reliability of the dynamic braking device can be improved will be described.

インバータ装置１６と発電制動装置１ａとの通信線が断線した場合、第１送信機７と第２受信機１０ａとの通信と、第２送信機９ａと第１受信機８との通信とが切断される。さらに、インバータ装置１６と発電制動装置１ａの少なくともどちらかが故障した場合も、第１送信機７と第２受信機１０ａとの通信と、第２送信機９ａと第１受信機８との通信とが切断されることがある。   When the communication line between the inverter device 16 and the dynamic braking device 1a is disconnected, the communication between the first transmitter 7 and the second receiver 10a and the communication between the second transmitter 9a and the first receiver 8 are disconnected. Is done. Further, even when at least one of the inverter device 16 and the dynamic braking device 1a fails, communication between the first transmitter 7 and the second receiver 10a and communication between the second transmitter 9a and the first receiver 8 are performed. And may be cut off.

通信が切断すると、インバータ装置１６の第１受信機８は発電制動装置１ａの第２送信機９ａの出力を受信できないため０を出力する。インバータ装置１６の異常判定器６は、第１受信機８の出力が０なので、発電制動装置１ａは異常であると判定する。   When communication is disconnected, the first receiver 8 of the inverter device 16 outputs 0 because it cannot receive the output of the second transmitter 9a of the dynamic braking device 1a. The abnormality determiner 6 of the inverter device 16 determines that the dynamic braking device 1a is abnormal because the output of the first receiver 8 is zero.

さらに、発電制動装置１ａの第２受信機１０ａはインバータ装置１６の第１送信機７の出力を受信できないため０を出力する。発電制動装置１ａの駆動回路４ａは、第２受信機１０ａの出力が０なのでスイッチング素子３ａをオフする信号を出力する。   Further, since the second receiver 10a of the dynamic braking device 1a cannot receive the output of the first transmitter 7 of the inverter device 16, it outputs 0. The drive circuit 4a of the dynamic braking device 1a outputs a signal for turning off the switching element 3a because the output of the second receiver 10a is zero.

以上より、インバータ装置１６は、通信線の断線または発電制動装置１ａの故障を検知することができるため、インバータ装置１６の直流電圧が過電圧となる前に運転を停止することができる。さらに、発電制動装置１ａは、通信線の断線を検知するとともに、その際に、スイッチング素子３ａが誤ってオンすることを防ぐことができる。これらにより、発電制動装置の信頼性が向上される。   As described above, since the inverter device 16 can detect the disconnection of the communication line or the failure of the dynamic braking device 1a, the operation can be stopped before the DC voltage of the inverter device 16 becomes an overvoltage. Furthermore, the dynamic braking device 1a can detect the disconnection of the communication line and prevent the switching element 3a from being turned on erroneously at that time. As a result, the reliability of the dynamic braking device is improved.

次に、発電制動装置のメンテナンス性の向上が可能となる理由を説明する。   Next, the reason why the maintenance performance of the dynamic braking device can be improved will be described.

異常検出器５ａは発電制動装置１ａの異常を検出し、その異常を示す任意の値を出力している。異常検出器５ａの出力は、通信により第２送信機９ａから第１受信機８を介してインバータ装置１６の異常判定器６に入力される。   The abnormality detector 5a detects an abnormality of the dynamic braking device 1a and outputs an arbitrary value indicating the abnormality. The output of the abnormality detector 5a is input from the second transmitter 9a to the abnormality determiner 6 of the inverter device 16 via the first receiver 8 by communication.

この異常判定器６に入力された異常を示す任意の値から、例えば、インバータ装置１６に含まれる表示器や、外部のタッチパネル等に発電制動装置１ａの異常を表示できるようにすると、発電制動装置１ａを見なくてもその異常を簡単に知ることが可能となる。一般的に、インバータ装置１６や発電制動装置１ａは、制御盤の中に配置されていることが多いため、発電制動装置１ａの異常を制御盤面等で確認できれば、異常への対応を迅速に行うことができる。これにより、発電制動装置のメンテナンス性が向上される。   If an abnormality of the dynamic braking device 1a can be displayed on an indicator included in the inverter device 16, an external touch panel, or the like from an arbitrary value indicating the abnormality input to the abnormality determining device 6, the dynamic braking device The abnormality can be easily known without looking at 1a. In general, since the inverter device 16 and the dynamic braking device 1a are often arranged in the control panel, if the abnormality of the dynamic braking device 1a can be confirmed on the control panel surface or the like, the response to the abnormality is quickly performed. be able to. Thereby, the maintainability of the dynamic braking device is improved.

発電制動装置１ｂの第２受信機１０ｂと異常検出器５ｂと第２送信機９ｂとは、発電制動装置１ａの第２受信機１０ａと異常検出器５ａと第２送信機９ａと同じ動作となり、発電制動装置１ｂについても同様の効果が期待できる。   The second receiver 10b, the abnormality detector 5b, and the second transmitter 9b of the dynamic braking device 1b are the same operations as the second receiver 10a, the abnormal detector 5a, and the second transmitter 9a of the dynamic braking device 1a, The same effect can be expected for the dynamic braking device 1b.

本発明により、並列接続した各発電制動装置のスイッチング素子のオン／オフするタイミングを合わせることができるとともに、発電制動装置の信頼性およびメンテナンス性の向上ができることから、産業上の利用の可能性は大いにある。   According to the present invention, the timing of turning on / off the switching elements of the power generation braking devices connected in parallel can be adjusted, and the reliability and maintainability of the power generation braking device can be improved. There is much.

１ａ，１ｂ，１ａ’，１ｂ’ 発電制動装置
２ａ，２ｂ 制動抵抗
３ａ，３ｂ スイッチング素子
４ａ，４ｂ，４ａ’，４ｂ’ 駆動回路
５ａ，５ｂ 異常検出器
６ 異常判定器
７ 第１送信機
８ 第１受信機
９ａ，９ｂ 第２送信機
１０ａ，１０ｂ 第２受信機
１１ 交流電源
１２ 整流器
１３ 平滑コンデンサ
１４ 電力変換器
１５ 電動機
１６，１６’ インバータ装置
１７，１７ａ’，１７ｂ’ 電圧検出器
１８，１８ａ’，１８ｂ’ 比較器
1a, 1b, 1a ', 1b' Power braking device 2a, 2b Braking resistor 3a, 3b Switching element 4a, 4b, 4a ', 4b' Drive circuit 5a, 5b Abnormality detector 6 Abnormality detector 7 First transmitter 8 First 1 receiver 9a, 9b 2nd transmitter 10a, 10b 2nd receiver 11 AC power source 12 rectifier 13 smoothing capacitor 14 power converter 15 motor 16, 16 'inverter device 17, 17a', 17b 'voltage detector 18, 18a ', 18b' comparator

Claims (2)

交流電源の交流電力を直流電力に変換する整流器と、該整流器に並列接続する平滑コンデンサと、前記直流電力を電動機に供給する電力変換器とからなるインバータ装置と、直列接続して前記平滑コンデンサと並列接続した制動抵抗とスイッチング素子と、前記平滑コンデンサの直流電圧を検出する電圧検出器と、該電圧検出器の出力と前記直流電圧の制限値とを比較し前記電圧検出器の出力が前記直流電圧の制限値より大きい場合は１を出力し前記電圧検出器の出力が前記直流電圧の制限値より小さい場合は０を出力する比較器と、該比較器の出力が０の場合に前記スイッチング素子をオフする信号を出力し前記比較器の出力が１の場合に前記スイッチング素子をオンする信号を出力する駆動回路とからなる発電制動装置とにより構成された電動機の制御装置において、
前記電圧検出器と前記比較器と前記駆動回路との代わりに前記平滑コンデンサの直流電圧を検出する電圧検出器と、該電圧検出器の出力と前記直流電圧の制限値とを比較し前記電圧検出器の出力が前記直流電圧の制限値より大きい場合は１を出力し前記電圧検出器の出力が前記直流電圧の制限値より小さい場合は０を出力する比較器と、該比較器の出力を通信で送信する第1送信機とを前記インバータ装置に具備し、該第１送信機の出力が受信できた場合に受信した値を出力し前記第１送信機の出力が受信できなかった場合に０を出力する第２受信機と、該第２受信機の出力が０の場合に前記スイッチング素子をオフする信号を出力し前記第２受信機の出力が１の場合に前記スイッチング素子をオンする信号を出力する駆動回路とを前記発電制動装置に具備したことを特徴とする電動機の制御装置。
A rectifier that converts AC power of an AC power source into DC power, a smoothing capacitor that is connected in parallel to the rectifier, an inverter device that includes the power converter that supplies the DC power to the motor, and the smoothing capacitor that is connected in series. The braking resistor and the switching element connected in parallel, the voltage detector for detecting the DC voltage of the smoothing capacitor, the output of the voltage detector and the limit value of the DC voltage are compared, and the output of the voltage detector is the DC A comparator that outputs 1 if it is greater than the limit value of the voltage and outputs 0 if the output of the voltage detector is less than the limit value of the DC voltage; and the switching element if the output of the comparator is 0 And a driving braking circuit that outputs a signal for turning on the switching element when the output of the comparator is 1. The motor controller,
Instead of the voltage detector, the comparator, and the drive circuit, a voltage detector that detects a DC voltage of the smoothing capacitor, and compares the output of the voltage detector with the limit value of the DC voltage to detect the voltage When the output of the comparator is greater than the limit value of the DC voltage, 1 is output, and when the output of the voltage detector is less than the limit value of the DC voltage, 0 is output, and the output of the comparator is communicated The first transmitter that transmits the signal is provided in the inverter device, and when the output of the first transmitter is received, the received value is output, and when the output of the first transmitter cannot be received, 0 is output. A signal for turning off the switching element when the output of the second receiver is 0 and a signal for turning on the switching element when the output of the second receiver is 1 A drive circuit that outputs An electric motor control device provided in a moving device.
前記発電制動装置の異常を検出した場合に０と１とを除いた異常の内容を示す任意の値を出力し前記発電制動装置が正常の場合に１を出力する異常検出器と、該異常検出器の出力を通信で送信する第２送信機とを前記発電制動装置に具備し、該第２送信機の出力が受信できた場合に受信した値を出力し前記第２送信機の出力が受信できなかった場合に０を出力する第１受信機と、該第１受信機の出力が０または前記異常の内容を示す任意の値の場合は前記発電制動装置が異常と判定し前記第１受信機の出力が１の場合は前記発電制動装置が正常と判定する異常判定器とを前記インバータ装置に具備したことを特徴とする請求項１記載の電動機の制御装置。
An abnormality detector that outputs an arbitrary value indicating the content of the abnormality excluding 0 and 1 when an abnormality of the dynamic braking device is detected and outputs 1 when the dynamic braking device is normal, and the abnormality detection The power generation braking device includes a second transmitter for transmitting the output of the transmitter by communication, and when the output of the second transmitter is received, the received value is output and the output of the second transmitter is received. The first receiver that outputs 0 when it cannot be performed, and when the output of the first receiver is 0 or any value indicating the content of the abnormality, the dynamic braking device determines that the abnormality is abnormal and the first reception The motor control device according to claim 1, wherein when the output of the machine is 1, the inverter device includes an abnormality determination unit that determines that the dynamic braking device is normal.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108322128A (en) * 2018-03-09 2018-07-24 奥克斯空调股份有限公司 A kind of motor driving protective device, over-voltage protection method, device and air conditioner
WO2019107871A1 (en) * 2017-11-29 2019-06-06 엘지전자 주식회사 Motor drive apparatus and control method thereof
CN114285348A (en) * 2021-12-17 2022-04-05 深圳市汇川技术股份有限公司 Multi-transmission frequency conversion system, braking control method thereof and computer readable storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07222456A (en) * 1994-01-31 1995-08-18 Meidensha Corp Inverter system
JPH11308881A (en) * 1998-04-24 1999-11-05 Toyo Electric Mfg Co Ltd Over-voltage control apparatus
JP2003333873A (en) * 2002-05-17 2003-11-21 Fuji Electric Co Ltd Overheat protection method for resistor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07222456A (en) * 1994-01-31 1995-08-18 Meidensha Corp Inverter system
JPH11308881A (en) * 1998-04-24 1999-11-05 Toyo Electric Mfg Co Ltd Over-voltage control apparatus
JP2003333873A (en) * 2002-05-17 2003-11-21 Fuji Electric Co Ltd Overheat protection method for resistor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019107871A1 (en) * 2017-11-29 2019-06-06 엘지전자 주식회사 Motor drive apparatus and control method thereof
US11139760B2 (en) 2017-11-29 2021-10-05 Lg Electronics Inc. Motor drive apparatus and control method thereof
CN108322128A (en) * 2018-03-09 2018-07-24 奥克斯空调股份有限公司 A kind of motor driving protective device, over-voltage protection method, device and air conditioner
CN114285348A (en) * 2021-12-17 2022-04-05 深圳市汇川技术股份有限公司 Multi-transmission frequency conversion system, braking control method thereof and computer readable storage medium

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