CONTROL PANEL AND PUMP DEVICE

To provide a control panel capable of predicting the lifetime of an electrolytic capacitor in a simple configuration, and a pump device.SOLUTION: A control panel 14 comprises: a converter circuit 31 including an electrolytic capacitor 31a; a temperature detector 32a provided in an inverter circuit 3...

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Bibliographische Detailangaben
Hauptverfasser: SUZUKI RYOJI, TAMAGAWA MITSURU, OUCHI YUTA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a control panel capable of predicting the lifetime of an electrolytic capacitor in a simple configuration, and a pump device.SOLUTION: A control panel 14 comprises: a converter circuit 31 including an electrolytic capacitor 31a; a temperature detector 32a provided in an inverter circuit 32; and a control section 24 which calculates an average temperature Tduring a predetermined time (t) from temperatures detected by the temperature detector 32a, estimates a temperature Tof the electrolytic capacitor 31a during the predetermined time (t) from the average temperature T, and when a maximum rating temperature of the electrolytic capacitor 31a is defined as T, the specific lifetime that is the lifetime of the electrolytic capacitor 31a in the case where the electrolytic capacitor 31a is used at the maximum rating temperature Tis defined as Land the lifetime of the electrolytic capacitor 31a in the case where the temperature of the electrolytic capacitor 31a is the temperature Tis defined as L, calculates a consumption lifetime that is the lifetime consumed by the electrolytic capacitor 31a during the predetermined time (t) from the relationship expressed by L=(1/2)^((T-T)/10)×L.SELECTED DRAWING: Figure 1 【課題】簡素な構成で電解コンデンサの寿命を予測可能な制御盤、及び、ポンプ装置を提供すること。【解決手段】制御盤14は、電解コンデンサ31aを有するコンバータ回路31と、インバータ回路32に設けられる温度検出器32aと、温度検出器32aにより検出した温度から所定時間tにおける平均温度T0を算出し、平均温度T0から所定時間tにおける電解コンデンサ31aの温度Tcを推定し、電解コンデンサ31aの最大定格温度をTmaxとし、最大定格温度Tmaxで電解コンデンサ31aを使用したときの電解コンデンサ31aの寿命である規定寿命をLmaxとし、電解コンデンサ31aの温度が温度Tcであるときの電解コンデンサ31aの寿命をLcとしたときに、Lc=(1/2)^((Tc−Tmax)/10)×Lmaxで表される関係から、所定時間tにおいて電解コンデンサ31aが消費した寿命である消費寿命を算出する制御部24と、を備える。【選択図】 図1