JP6191586B2 - モータコントローラ、電動車両、及び、スイッチング素子の熱ストレス推定方法 - Google Patents
モータコントローラ、電動車両、及び、スイッチング素子の熱ストレス推定方法 Download PDFInfo
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
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- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
- B60W30/1843—Overheating of driveline components
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B60L2240/36—Temperature of vehicle components or parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
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- B60L2240/525—Temperature of converter or components thereof
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- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
3:メインバッテリ
4:システムメインリレー
5:パワーコントロールユニット(モータコントローラ)
6:エンジン
8:モータ
11:冷却システム
13:冷却パイプ
14:電動ポンプ
15:リザーブタンク
16:ラジエータ
17:クーラ
18:オイルクーラ
19:トランスミッション
20:電圧コンバータ
22、23、31−36:スイッチング素子
30:インバータ
41:流量センサ
43、45a、45b:温度センサ
50:コンピュータ
51:パワーコントローラ
52:冷却器コントローラ
53:HVコントローラ
54:メモリ(カウンタメモリ)
56:ダイアグメモリ
102:ロボット
103:商用交流電源
105:モータコントローラ
108:関節用モータ
120:AC−DCコンバータ
130:インバータ
151:コンピュータ
154:メモリ
Claims (4)
- 電源の出力電力をモータ駆動用の電力に変換するスイッチング素子と、
前記スイッチング素子の温度を計測する温度センサと、
前記スイッチング素子の温度の経時変化における極大点と極小点を抽出し、極大点から次の極小点までの温度差と、極小点から次の極大点までの温度差を算出し、算出された各温度差に基づいて、前記スイッチング素子が受けた熱ストレスの推定値を算出するコンピュータと、を備えており、
前記コンピュータは、
前記スイッチング素子の温度の経時変化における極小点と極大点の温度差の大きさでビンの幅を規定したヒストグラムの各ビンの出現回数を記憶するカウンタメモリを備えており、
算出された温度差毎に、前記カウンタメモリに記憶された出現回数であって当該温度差に対応するビンの出現回数を1つ増加させ、
前記カウンタメモリに記憶された出現回数に基づいて、前記推定値を算出するとともに、
前記ヒストグラムの各ビンに対して出現回数の基準値を記憶しており、
各ビンについて、記憶された出現回数の前記基準値に対する比率を求め、
全てのビンの前記比率を加算し、
加算値を前記推定値として出力するものであり、
絶対値が同じ温度差であって時間軸上で極小点から極大点に向かう上昇局面での温度差と極大点から極小点に向かう下降局面での温度差が異なるビンに割り当てられており、前記異なるビンの夫々の前記基準値が異なっている、モータコントローラ。 - 走行用のモータに電力を供給するモータコントローラと、
前記モータコントローラに備えられているスイッチング素子を冷却する冷媒循環路と、
冷媒を循環させるポンプと、
を備えており、
前記モータコントローラは、
電源の出力電力をモータ駆動用の電力に変換する前記スイッチング素子と、
前記スイッチング素子の温度を計測する温度センサと、
前記スイッチング素子の温度の経時変化における極大点と極小点を抽出し、極大点から次の極小点までの温度差と、極小点から次の極大点までの温度差を算出し、算出された各温度差に基づいて、前記スイッチング素子が受けた熱ストレスの推定値を算出するコンピュータと、を備えており、
前記コンピュータは、前記推定値の単位時間当たりの増加率、又は、単位走行距離当たりの増加率が大きいほど、所定の冷媒温度に対する前記ポンプの出力を増加させることを特徴とする電動車両。 - 前記コンピュータは、
前記スイッチング素子の温度の経時変化における極小点と極大点の温度差の大きさでビンの幅を規定したヒストグラムの各ビンの出現回数を記憶するカウンタメモリを備えており、
算出された温度差毎に、前記カウンタメモリに記憶された出現回数であって当該温度差に対応するビンの出現回数を1つ増加させ、
前記カウンタメモリに記憶された出現回数に基づいて、前記推定値を算出するとともに、
前記ヒストグラムの各ビンに対して出現回数の基準値を記憶しており、
各ビンについて、記憶された出現回数の前記基準値に対する比率を求め、
全てのビンの前記比率を加算し、
加算値を前記推定値として出力するものであり、
絶対値が同じ温度差であって時間軸上で極小点から極大点に向かう上昇局面での温度差と極大点から極小点に向かう下降局面での温度差が異なるビンに割り当てられており、前記異なるビンの夫々の前記基準値が異なっている、請求項2に記載の電動車両。 - 電源の出力電力をモータ駆動用の電力に変換するスイッチング素子が受けた熱ストレスを推定する方法であり、
前記スイッチング素子の温度の経時変化における極大点と極小点を抽出し、
極大点から次の極小点までの温度差と、極小点から次の極大点までの温度差を算出し、
算出された各温度差に基づいて、前記スイッチング素子が受けた熱ストレスの推定値を算出する、
ことを特徴とする熱ストレス推定方法であり、
前記推定値を算出することは、
算出された各温度差に基づいて、前記スイッチング素子の温度の経時変化における極小点と極大点の温度差の大きさでビンの幅を規定したヒストグラムを作成すること、
作成されたヒストグラムにおける出現回数に基づいて、前記推定値を算出すること、
を含んでおり、
前記ヒストグラムの各ビンに対して出現回数の基準値が予め定められており、
前記推定値を算出することはさらに、
各ビンについて、記憶された出現回数の前記基準値に対する比率を求めること、
全てのビンの前記比率を加算すること、
加算値を前記推定値として出力すること、
を含んでおり、
絶対値が同じ温度差であって時間軸上で極小点から極大点に向かう上昇局面での温度差と極大点から極小点に向かう下降局面での温度差が異なるビンに割り当てられており、前記異なるビンの夫々の前記基準値が異なっている、
熱ストレス推定方法。
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