JP7407768B2 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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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
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/68—Controlling or determining the temperature of the motor or of the drive based on the temperature of a drive component or a semiconductor component
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Inverter Devices (AREA)
Description
半導体スイッチング素子により構成された電力変換部と、
前記半導体スイッチング素子を冷却する冷却器と、
前記半導体スイッチング素子のスイッチングを制御する制御装置と、
前記半導体スイッチング素子の温度を検出する温度センサと、
を備え、回転電機を制御するように構成された電力変換装置であって、
前記制御装置は、
前記温度センサが検出した温度検出値に基づいて演算した温度上昇率と、予め定められた第1の閾値とを比較し、前記温度上昇率が前記第1の閾値を超えたことを判定する温度上昇率判定部と、
前記温度センサの温度検出値と予め定められた第2の閾値とを比較し、前記温度検出値が前記第2の閾値を超えたことを判定する温度上昇判定部と、
前記回転電機に対するトルク指令を抑制するトルク指令抑制部と、
を備え、
前記第1の閾値は、
前記電力変換部若しくは前記冷却器の正常時に前記温度上昇率が到達しない値であり、かつ、少なくとも前記半導体スイッチング素子の損失ばらつきと前記冷却器の性能ばらつきと前記温度センサの検出誤差とを加味し、前記温度センサの温度検出値の単位時間当たりの上昇量が高い値側にばらついたとしても、前記正常時に前記温度上昇率が到達しない値に設定され、
前記第2の閾値は、前記電力変換部若しくは前記冷却器の正常時には到達しない値に設定され、
前記温度上昇率判定部と前記温度上昇判定部とのうちの少なくとも一方が、前記判定をしたとき、前記トルク指令抑制部により、前記回転電機に対するトルク指令を抑制することで前記電力変換装置の駆動条件を制御し、前記電力変換部の出力を抑制する保護動作を実行するように構成されている、
ことを特徴とする。
図1は、実施の形態1による電力変換装置を示す構成図である。図1において、電力変換装置100は、電源部2と、電力変換部3と、冷却器4と、回転角センサ5と、電動機温度センサ6と、半導体スイッチング素子温度センサ7と、指令発生器8と、制御装置9とを備える。電動機1は、電力変換装置100の負荷装置であるが、負荷装置は、電動機1に限るものではなく、電動機以外であってよい。
つぎに、実施の形態2による電力変換装置について説明する。実施の形態2では、実施の形態1による電力変換装置の構成に対して、温度上昇率判定部911の第1の閾値Th1を動的に変化させるようにしたものである。なお、実施の形態2では、実施の形態1と同一又は相当する部分の説明は省略し、実施の形態1と異なる点を中心に説明する。
図8は、実施の形態3による電力変換装置における、出力抑制部の構成を示すブロック図である。実施の形態3による電力変換装置では、実施の形態1による電力変換装置の構成に対して、温度上昇率判定部911の出力先の変更、および出力抑制部91に温度上昇判定部914と異常判定部915とを追加したものである。なお、実施の形態3では、実施の形態1と同様である点の説明を省略し、実施の形態1と異なる点を中心に説明する。
5 回転角センサ、6 電動機温度センサ、7 半導体スイッチング素子温度センサ、
8 指令発生器、9 制御装置、11 U相コイル、12 V相コイル、
13 W相コイル、21 バッテリ、22 平滑コンデンサ、23 チョークコイル、
311、312、313、314、315、316 半導体スイッチング素子、
31 インバータ部、32 電流検出器、321 U相電流検出部、
322 V相電流検出部、323 W相電流検出部、33 増幅回路、34 駆動回路、91 出力抑制部、92 回転数演算部、93 トルク・電流指令変換部、
94 三相・二相変換部、95 電圧指令生成部、96 二相・三相変換部、
97 デューティ変換部、98 PWM信号生成部、911 温度上昇率判定部、
912 トルク指令抑制部、913 出力停止判定部、914 温度上昇判定部、
915 異常判定部
Claims (9)
- 半導体スイッチング素子により構成された電力変換部と、
前記半導体スイッチング素子を冷却する冷却器と、
前記半導体スイッチング素子のスイッチングを制御する制御装置と、
前記半導体スイッチング素子の温度を検出する温度センサと、
を備え、回転電機を制御するように構成された電力変換装置であって、
前記制御装置は、
前記温度センサが検出した温度検出値に基づいて演算した温度上昇率と、予め定められた第1の閾値とを比較し、前記温度上昇率が前記第1の閾値を超えたことを判定する温度上昇率判定部と、
前記温度センサの温度検出値と予め定められた第2の閾値とを比較し、前記温度検出値が前記第2の閾値を超えたことを判定する温度上昇判定部と、
前記回転電機に対するトルク指令を抑制するトルク指令抑制部と、
を備え、
前記第1の閾値は、
前記電力変換部若しくは前記冷却器の正常時に前記温度上昇率が到達しない値であり、かつ、少なくとも前記半導体スイッチング素子の損失ばらつきと前記冷却器の性能ばらつきと前記温度センサの検出誤差とを加味し、前記温度センサの温度検出値の単位時間当たりの上昇量が高い値側にばらついたとしても、前記正常時に前記温度上昇率が到達しない値に設定され、
前記第2の閾値は、前記電力変換部若しくは前記冷却器の正常時には到達しない値に設定され、
前記温度上昇率判定部と前記温度上昇判定部とのうちの少なくとも一方が、前記判定をしたとき、前記トルク指令抑制部により、前記回転電機に対するトルク指令を抑制することで前記電力変換装置の駆動条件を制御し、前記電力変換部の出力を抑制する保護動作を実行するように構成されている、
ことを特徴とする電力変換装置。 - 前記制御装置は、前記電力変換部の出力に基づいて、前記第1の閾値を変動させるように構成されている、
ことを特徴とする請求項1に記載の電力変換装置。 - 前記電力変換部の前記出力が比較的低いときは、前記第1の閾値の値を比較的低く設定し、前記電力変換部の前記出力が比較的高いときは、前記第1の閾値の値を比較的高く設定する、ように構成されている、
ことを特徴とする請求項2に記載の電力変換装置。 - 前記保護動作を実行してから、前記温度上昇率が前記第1の閾値よりも低くなっても、前記保護動作を継続するように構成されている、
ことを特徴とする請求項1から3のうちの何れか一項に記載の電力変換装置。 - 前記制御装置は、
予め定められた第3の閾値と前記温度検出値とを比較し、前記保護動作を実行してから、前記温度検出値が前記第3の閾値を超えたとき、前記電力変換部の出力を停止させる出力停止判定部を備えている、
することを特徴とする請求項1から4のうちの何れか一項に記載の電力変換装置。 - 前記温度上昇率判定部と前記温度上昇判定部のうちの少なくとも一方が、前記判定をした後、前記保護動作を実行するように構成されている、
ことを特徴とする請求項1から5のうちの何れか一項に記載の電力変換装置。 - 前記保護動作を実行した後、前記温度上昇率が前記第1の閾値より低下する状態と、前記温度検出値が前記第2の閾値より低下する状態と、のうちの少なくとも一方の状態になっても、前記保護動作を継続するように構成されている、
ことを特徴とする請求項1から6のうちの何れか一項に記載の電力変換装置。 - 前記保護動作を実行してから、予め定められた時間の後に前記電力変換部の出力を停止するように構成されている、
ことを特徴とする請求項1から7のうちの何れか一項に記載の電力変換装置。 - 前記電力変換部の一つのアームを構成する前記半導体スイッチング素子は、複数の半導体スイッチング素子が並列に接続されて構成されており、
前記温度センサは、全ての半導体スイッチング素子の温度の平均値を検出するように構成されている、
ことを特徴とする請求項1から8のうちの何れか一項に記載の電力変換装置。
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JP2021082890A JP7407768B2 (ja) | 2021-05-17 | 2021-05-17 | 電力変換装置 |
US17/564,324 US11711014B2 (en) | 2021-05-17 | 2021-12-29 | Electric-power conversion apparatus |
CN202210506143.4A CN115441760A (zh) | 2021-05-17 | 2022-05-10 | 功率转换装置 |
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