CN110311620B - 电力转换装置控制系统、电动机系统和复合系统 - Google Patents

电力转换装置控制系统、电动机系统和复合系统 Download PDF

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CN110311620B
CN110311620B CN201910207417.8A CN201910207417A CN110311620B CN 110311620 B CN110311620 B CN 110311620B CN 201910207417 A CN201910207417 A CN 201910207417A CN 110311620 B CN110311620 B CN 110311620B
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power conversion
control
conversion device
motor
permanent magnet
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CN110311620A (zh
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佐野智之
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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
    • H02M7/53Conversion 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
    • H02M7/537Conversion 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
    • H02M7/539Conversion 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 with automatic control of output wave form or frequency
    • H02M7/5395Conversion 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 with automatic control of output wave form or frequency by pulse-width modulation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60Controlling or determining the temperature of the motor or of the drive
    • H02P29/66Controlling or determining the temperature of the rotor
    • H02P29/662Controlling or determining the temperature of the rotor the rotor having permanent magnets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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 apparatus, components or means specially adapted for HEVs
    • B60K6/26Arrangement 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 apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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 apparatus, components or means specially adapted for HEVs
    • B60K6/38Arrangement 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 apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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
    • B60K6/44Series-parallel type
    • B60K6/442Series-parallel switching type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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
    • B60K6/46Series type
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    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60LPROPULSION 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
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/025Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using field orientation; Vector control; Direct Torque Control [DTC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/04Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using dc
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/06Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using substantially sinusoidal ac
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L15/02Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/08Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using pulses
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L3/0061Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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
    • H02M7/53Conversion 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
    • H02M7/537Conversion 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
    • H02M7/5387Conversion 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
    • H02M7/53871Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
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    • H02M7/53Conversion 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
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Abstract

本发明提供能够抑制与载波频率的切换相伴的噪音和振动,并且能够抑制旋转电机的永久磁铁的温度的上升的电力转换装置控制系统、电动机系统和复合系统。电力转换装置控制系统具有:电力转换装置,其向旋转电机供给电力;以及控制装置,其对所述电力转换装置进行控制,所述控制装置在所述旋转电机所具有的永久磁铁的温度高于规定的阈值的情况下,通过所述电力转换装置的载波频率与所述旋转电机的转速成比例的同步控制对所述电力转换装置进行控制,在所述永久磁铁的温度为所述规定的阈值以下的情况下,通过所述电力转换装置的载波频率不与所述旋转电机的转速成比例的非同步控制对所述电力转换装置进行控制。

Description

电力转换装置控制系统、电动机系统和复合系统
技术领域
本申请根据2018年3月23日申请的日本专利申请第2018-056973号主张优先权,将其内容引用于此。
本发明涉及电力转换装置控制系统、电动机系统和复合系统。
背景技术
以往,公知有抑制同步PWM控制时的旋转电机的温度上升的旋转电机控制系统(例如参照日本特开2010-213485号)。该旋转电机控制系统构成为包含旋转电机、同步PWM控制用的控制块、逆变器、控制部、存储部。关于存储部的设定同步脉冲数数据,存储相对于电压指令值1个周期的载波的周期脉冲数即设定同步脉冲数,关于最佳载波相位数据,预先求出载波相位与以该载波相位运转时的旋转电机的温度之间的关系,根据该关系,针对各设定同步脉冲数,分别存储旋转电机的温度成为最佳条件的最佳载波相位。控制部根据旋转电机的运转条件,将逆变器的载波的相位设定为最佳载波相位。
在上述旋转电机控制系统中,通过应用同步PWM控制,提高电流稳定性,并且降低磁铁的温度。
但是,在上述旋转电机控制系统中,大量产生可能产生噪音和振动的载波频率(载波相位)的切换。因此,在上述旋转电机控制系统中,商品性可能降低。
发明内容
本发明提供能够抑制与载波频率的切换相伴的噪音和振动,并且能够抑制旋转电机的永久磁铁的温度的上升的电力转换装置控制系统、电动机系统和复合系统。
(1)本发明的一个方式的电力转换装置控制系统具有:电力转换装置,其向旋转电机供给电力;以及控制装置,其对所述电力转换装置进行控制,所述控制装置在所述旋转电机所具有的永久磁铁的温度高于规定的阈值的情况下,通过所述电力转换装置的载波频率与所述旋转电机的转速成比例的同步控制对所述电力转换装置进行控制,在所述永久磁铁的温度为所述规定的阈值以下的情况下,通过所述电力转换装置的载波频率不与所述旋转电机的转速成比例的非同步控制对所述电力转换装置进行控制。
(2)本发明的一个方式的电动机系统也可以具有上述(1)所记载的电力转换装置控制系统、作为所述旋转电机的行驶驱动用电动机和发电用电动机,所述控制装置通过所述同步控制和所述非同步控制对向所述行驶驱动用电动机供给电力的所述电力转换装置进行控制。
(3)本发明的一个方式的复合系统也可以具有上述(1)所记载的电力转换装置控制系统、所述旋转电机和内燃机,在所述内燃机运转的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
(4)本发明的一个方式的复合系统也可以具有上述(1)所记载的电力转换装置控制系统、所述旋转电机和内燃机,在所述内燃机的转速为规定转速以上的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
(5)上述(1)所记载的电力转换装置控制系统也可以搭载在车辆上,所述旋转电机用于所述车辆的驱动行驶,在所述车辆的行驶速度为规定速度以上的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
在上述(1)所记载的电力转换装置控制系统中,在旋转电机所具有的永久磁铁的温度高于规定的阈值的情况下,控制装置通过电力转换装置的载波频率与旋转电机的转速成比例的同步控制(例如同步PWM控制)对电力转换装置进行控制。因此,在上述(1)所记载的电力转换装置控制系统中,能够抑制旋转电机的永久磁铁的温度的上升,提高可靠性。
在上述(1)所记载的电力转换装置控制系统中,在旋转电机的永久磁铁的温度为规定的阈值以下的情况下,控制装置通过电力转换装置的载波频率不与旋转电机的转速成比例的非同步控制对电力转换装置进行控制。因此,在上述(1)所记载的电力转换装置控制系统中,能够抑制与载波频率的切换相伴的噪音和振动,提高商品性。
即,在上述(1)所记载的电力转换装置控制系统中,根据旋转电机的永久磁铁的温度条件对同步控制和非同步控制进行切换,由此,能够实现可靠性和商品性双方。
上述(2)所记载的电动机系统也可以具有上述(1)所记载的电力转换装置控制系统和作为旋转电机的行驶驱动用电动机,控制装置通过同步控制和非同步控制对向行驶驱动用电动机供给电力的电力转换装置进行控制。
在控制装置通过同步控制和非同步控制对电力转换装置进行控制的情况下,在上述(2)所记载的电动机系统中,能够抑制旋转电机的永久磁铁的温度的上升,提高可靠性,并且抑制与载波频率的切换相伴的噪音和振动,提高商品性。
上述(3)所记载的复合系统也可以具有上述(1)所记载的电力转换装置控制系统、旋转电机和内燃机,在内燃机运转的情况下,控制装置允许通过同步控制对电力转换装置进行控制。
在控制装置允许通过同步控制对电力转换装置进行控制的情况下,在上述(3)所记载的复合系统中,在内燃机的运转时,通过同步控制对电力转换装置进行控制,由此,能够提高节能性,并且通过内燃机的运转来满足用户。
上述(4)所记载的复合系统也可以具有上述(1)所记载的电力转换装置控制系统、旋转电机和内燃机,在内燃机的转速为规定转速以上的情况下,控制装置允许通过同步控制对电力转换装置进行控制。
在控制装置允许通过同步控制对电力转换装置进行控制的情况下,在上述(4)所记载的复合系统中,在内燃机的转速为规定转速以上的情况下,通过同步控制对电力转换装置进行控制,由此,能够提高节能性,并且通过规定转速以上的内燃机的运转来满足用户。
在上述(5)所记载的电力转换装置控制系统中,上述(1)所记载的电力转换装置控制系统也可以搭载在车辆上,旋转电机用于车辆的驱动行驶,在车辆的行驶速度为规定速度以上的情况下,控制装置允许通过同步控制对电力转换装置进行控制。
在控制装置允许通过同步控制对电力转换装置进行控制的情况下,在上述(5)所记载的电力转换装置控制系统中,在车辆的行驶速度为规定速度以上的情况下,通过同步控制对电力转换装置进行控制,由此,能够提高节能性,并且通过规定速度以上的车辆的行驶速度来满足用户。
附图说明
图1是示出第一实施方式的电力转换装置控制系统等的功能的一例的图。
图2是图1中的电子控制单元等的详细图。
图3是示出由图1和图2中的存储部存储的非同步PWM控制映射的一例的图。
图4是示出由图1和图2中的存储部存储的同步PWM控制映射的一例的图。
图5是示出由电子控制单元执行的处理的一例的流程图。
图6是示出第二实施方式的电动机系统的一例的图。
图7是示出第三实施方式的复合系统的一例的图。
图8是示出由第三实施方式的复合系统的电子控制单元执行的处理的一例的流程图。
图9是示出由第四实施方式的复合系统的电子控制单元执行的处理的一例的流程图。
图10是能够应用第一实施方式的电力转换装置控制系统、第二实施方式的电动机系统、第三或第四实施方式的复合系统的车辆的一部分的一例的图。
具体实施方式
下面,参照附图对本发明的电力转换装置控制系统、电动机系统和复合系统的实施方式进行说明。
<第一实施方式>
首先,对本发明的第一实施方式进行说明。
图1是示出第一实施方式的电力转换装置控制系统S等的功能的一例的图。
在图1所示的例子中,电力转换装置控制系统S具有电力转换装置1和作为控制装置发挥功能的电子控制单元28。电力转换装置1具有多个开关元件(未图示),将从电池11供给的直流电力转换为交流电力,将交流电力供给到作为旋转电机的电动机12。电子控制单元28对电力转换装置1进行控制,由此对电动机12进行控制。
电动机12具有转子12A、定子12B、位置检测器12C。转子12A具有永久磁铁12A1。位置检测器12C检测转子12A相对于定子12B的旋转角度。通过温度检测部TS检测电动机12的外壳(未图示)内的温度。
电子控制单元28具有控制部28A、电动机转速计算部28B、存储部28C。控制部28A例如如图2所示构成。电动机转速计算部28B根据位置检测器12C输出的信号计算电动机12的转速。存储部28C例如存储图3和图4所示那样的控制映射。
图2是图1中的电子控制单元28等的详细图。
在图2所示的例子中,电子控制单元28的控制部28A具有电流指令计算部28A1、电流转换部28A2、减法器28A3、减法器28A4、电压指令计算部28A5、电压转换部28A6、逆变器控制部28A7(栅极驱动单元29(参照图10))、温度计算部28A8。
电流指令计算部28A1设定电动机12的输出转矩为指令转矩值T1所需要的驱动电流的振幅和相位。电流指令计算部28A1根据所设定的振幅和相位计算励磁电流指令值Idc和转矩电流指令值Iqc。
电流转换部28A2将电流传感器25检测到的例如U相、V相的驱动电流转换为励磁电流Id、转矩电流Iq。
减法器28A3从电流指令计算部28A1计算出的励磁电流指令值Idc中减去电流转换部28A2转换后的励磁电流Id,由此求出励磁电流指令值Idc与励磁电流Id的偏差(差值)。减法器28A4从电流指令计算部28A1计算出的转矩电流指令值Iqc中减去电流转换部28A2转换后的转矩电流Iq,由此求出转矩电流指令值Iqc与转矩电流Iq的偏差(差值)。
电压指令计算部28A5根据减法器28A3求出的偏差(差值)(Idc-Id)和减法器28A4求出的偏差(差值)(Iqc-Iq),计算d轴的电压指令值(励磁电压指令值)Vdc和q轴的电压指令值(转矩电压指令值)Vqc。电压指令计算部28A5根据PI控制等反馈控制计算励磁电压指令值Vdc和转矩电压指令值Vqc,以使得偏差(差值)(Idc-Id)和偏差(差值)(Iqc-Iq)分别成为“0”。
电压转换部28A6将电压指令计算部28A5计算出的励磁电压指令值Vdc和转矩电压指令值Vqc转换为电动机12的U相的施加电压的指令电压值Vuc、V相的施加电压的指令电压值Vvc和W相的施加电压的指令电压值Vwc。
这些指令电压值Vuc、Vvc、Vwc规定电动机12的各相的施加电压的大小和相位。
逆变器控制部28A7(栅极驱动单元29)根据电压转换部28A6转换后的指令电压值Vuc、Vvc、Vwc,将对电力转换装置1的多个开关元件进行控制的控制信号送到电力转换装置1。由此,从电力转换装置1输出的三相的驱动电流的振幅和相位成为电流指令计算部28A1设定的振幅和相位,施加给电动机12的各相的电压成为指令电压值Vuc、Vvc、Vwc。因此,电动机12的输出转矩成为指令转矩值T1。
温度计算部28A8根据温度检测部TS输出的信号和公知方法,计算电动机12的永久磁铁12A1的温度。
图3是示出由图1和图2中的存储部28C存储的非同步PWM(PulseWidthModulation)控制映射的一例的图。图3的横轴示出电动机12的转速。图3的纵轴示出PWM控制的载波频率。
在图3所示的例子中,在电动机12的转速为零~值N1的区域内,载波频率设定为固定值F1。即,在电动机12的转速为零~值N1的区域内,PWM控制的载波频率不与电动机12的转速成比例。
在电动机12的转速为值N1~NA的区域内,随着电动机12的转速增加到值N1~NA,载波频率增加到值F1~FA。
在电动机12的转速大于值NA的区域内,载波频率设定为固定值FA。即,在电动机12的转速大于值NA的区域内,PWM控制的载波频率不与电动机12的转速成比例。
图4是示出由图1和图2中的存储部28C存储的同步PWM控制映射的一例的图。图4的横轴示出电动机12的转速。图4的纵轴示出PWM控制的载波频率。
在图4所示的例子中,电动机12的转速为零~值N1的区域设定为“非同步区域(不能执行同步PWM控制的区域)”。在“非同步区域”内,载波频率设定为固定值F1,进行非同步PWM控制。电动机12的转速大于值N1的区域设定为“同步区域”。在“同步区域”内,进行同步PWM控制。根据电动机12的电角基本频率设定值N1。
在图4所示的例子中,与图3所示的例子同样,在电动机12的转速为零~值N1的“非同步区域”内,载波频率设定为固定值F1。
在电动机12的转速大于值N1的“同步区域”内,随着电动机12的转速增加,所设定的脉冲数减少。在脉冲数为固定值的范围内,随着电动机12的转速增加,载波频率增加。
例如,在“同步区域”中的电动机12的转速为值N1~N2的范围内,脉冲数设定为值P1。随着电动机12的转速增加到值N1~N2,载波频率增加到值F1~FMAX。详细地讲,在电动机12的转速为值N1~N2的范围内,载波频率与电动机12的转速成比例。
在“同步区域”中的电动机12的转速为值N2~N3的范围内,脉冲数设定为值P2(<P1)。随着电动机12的转速增加到值N2~N3,载波频率增加到值F2~FMAX。电动机12的转速为值N2~N3的范围内的载波频率的斜率(增加程度)小于电动机12的转速为值N1~N2的范围内的载波频率的斜率。详细地讲,在电动机12的转速为值N2~N3的范围内,载波频率与电动机12的转速成比例。
在“同步区域”中的电动机12的转速为值N3~N4的范围内,脉冲数设定为值P3(<P2)。随着电动机12的转速增加到值N3~N4,载波频率增加到值F3~FMAX。电动机12的转速为值N3~N4的范围内的载波频率的斜率小于电动机12的转速为值N2~N3的范围内的载波频率的斜率。详细地讲,在电动机12的转速为值N3~N4的范围内,载波频率与电动机12的转速成比例。
图5是示出由电子控制单元28执行的处理的一例的流程图。
在图5所示的例子中,在步骤S1中,电子控制单元28的例如控制部28A取得由电动机转速计算部28B计算出的电动机12的转速。
接着,在步骤S2中,例如控制部28A取得由温度计算部28A8计算出的电动机12的永久磁铁12Al的温度。
接着,在步骤S3中,例如控制部28A取得由存储部28C存储的非同步PWM控制映射(参照图3)和同步PWM控制映射(参照图4)。
接着,在步骤S4中,例如控制部28A判定电动机12的永久磁铁12A1的温度是否高于保护阈值(详细地讲为永久磁铁12A1的温度的极限值)。在永久磁铁12A1的温度为保护阈值以下的情况下,进入步骤S5。另一方面,在永久磁铁12A1的温度高于保护阈值的情况下,进入步骤S9。
在步骤S5中,例如控制部28A判定电动机12的永久磁铁12A1的温度是否为规定的阈值(<保护阈值)以下。在永久磁铁12A1的温度高于规定的阈值的情况下,进入步骤S6。另一方面,在永久磁铁12A1的温度为规定的阈值以下的情况下,进入步骤S7。
在步骤S6中,例如控制部28A判定电动机12的转速是否是能够执行同步PWM控制的转速。在电动机12的转速是无法执行同步PWM控制的转速的情况下,详细地讲,在电动机12的转速为零~值N1(参照图3和图4)的情况下,进入步骤S7。在电动机12的转速是能够执行同步PWM控制的转速的情况下,详细地讲,在电动机12的转速大于值N1的情况下,进入步骤S8。
在步骤S7中,控制部28A通过基于图3所示的非同步PWM控制映射的非同步PWM控制对电力转换装置1进行控制。即,在步骤S7中,电力转换装置控制系统S成为通常运转模式。
例如,在电动机12的转速为零~值N1的情况下,控制部28A将载波频率设定为值F1(即维持载波频率),执行非同步PWM控制。在电动机12的转速为值N1~NA的情况下,控制部28A将载波频率设定为值F1~FA,执行非同步PWM控制。在电动机12的转速大于值NA的情况下,控制部28A将载波频率设定为值FA(即维持载波频率),执行非同步PWM控制。
在步骤S8中,控制部28A通过基于图4所示的同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。即,在步骤S8中,电力转换装置控制系统S成为磁铁温度上升抑制模式。
例如,在电动机12的转速为值N1~N2的情况下,控制部28A将脉冲数设定为值P1,将载波频率设定为值F1~FMAX,执行同步PWM控制。在电动机12的转速为值N2~N3的情况下,控制部28A将脉冲数设定为值P2,将载波频率设定为值F2~FMAX,执行同步PWM控制。在电动机12的转速为值N3~N4的情况下,控制部28A将脉冲数设定为值P3,将载波频率设定为值F3~FMAX,执行同步PWM控制。
在步骤S9中,控制部28A进行限制电动机12的输出的控制。即,在步骤S9中,电力转换装置控制系统S成为输出限制运转模式(节电运转模式)。在输出限制运转模式中,强制限制电动机12的输出,降低永久磁铁12A1的温度。由此,抑制永久磁铁12A1减磁的可能性。
如上所述,在第一实施方式的电力转换装置控制系统S中,在作为旋转电机的电动机12所具有的永久磁铁12A1的温度高于规定的阈值的情况下,且在电动机12的永久磁铁12A1的温度为保护阈值以下的情况下,在图5的步骤S5中判定为“否”,在步骤S8中,控制部28A通过载波频率与电动机12的转速成比例的同步控制(详细地讲为同步PWM控制)对电力转换装置1进行控制。因此,在第一实施方式的电力转换装置控制系统S中,能够抑制电动机12的永久磁铁12A1的温度的上升,提高可靠性。
另外,在第一实施方式的电力转换装置控制系统S中,在电动机12的永久磁铁12A1的温度为规定的阈值以下的情况下(步骤S5为“是”的情况下),控制部28A通过载波频率不与电动机12的转速成比例的非同步控制(详细地讲为非同步PWM控制)对电力转换装置1进行控制。另外,在电动机12的永久磁铁12A1的温度为保护阈值以下的情况(步骤S4为“否”的情况下),且在电动机12的永久磁铁12A1的温度高于规定的阈值的情况下(步骤S5为“否”的情况下),且电动机12的转速是无法执行同步PWM控制的低转速的情况下(步骤S6为“否”的情况下),控制部28A通过载波频率不与电动机12的转速成比例的非同步控制(非同步PWM控制)对电力转换装置1进行控制。
因此,在第一实施方式的电力转换装置控制系统S中,能够抑制与载波频率的切换相伴的噪音和振动,提高商品性。即,在第一实施方式的电力转换装置控制系统S中,根据电动机12的永久磁铁12A1的温度条件对同步控制和非同步控制进行切换,由此,能够实现可靠性和商品性双方。
详细地讲,在第一实施方式的电力转换装置控制系统S中,在电动机12的转速为值N1~N4的情况下,且在电动机12的永久磁铁12A1的温度高于规定的阈值的情况下,执行载波频率与电动机12的转速成比例的同步PWM控制,由此,能够降低永久磁铁12A1的温度,提高电力转换装置控制系统S的可靠性。
另外,在第一实施方式的电力转换装置控制系统S中,在电动机12的转速为值N1~N4的情况下,且在电动机12的永久磁铁12A1的温度为规定的阈值以下的情况下,执行载波频率不与电动机12的转速成比例的非同步PWM控制,由此,能够抑制与载波频率的切换相伴的噪音和振动,提高电力转换装置控制系统S的商品性。
即,在第一实施方式的电力转换装置控制系统S中,根据电动机12的永久磁铁12A1的温度,对保护永久磁铁12A1的控制(同步PWM控制)和提高商品性的控制(非同步PWM控制)进行切换。其结果,能够同时实现电力转换装置控制系统S的可靠性的提高和商品性的提高。
<第二实施方式>
下面,对本发明的第二实施方式进行说明。
除了后述方面,第二实施方式的电动机系统MS与上述第一实施方式的电力转换装置控制系统S同样构成。因此,根据第二实施方式的电动机系统MS,除了后述方面,能够发挥与上述第一实施方式的电力转换装置控制系统S相同的效果。
图6是示出第二实施方式的电动机系统MS的一例的图。
在图6所示的例子中,电动机系统MS具有与第一电力转换装置控制系统S同样构成的电力转换装置控制系统S、电池11、作为旋转电机的行驶驱动用电动机12、发电用电动机13。
行驶驱动用电动机12通过从电池11供给的电力产生旋转驱动力(动力运行动作)。第二实施方式的电动机系统MS的行驶驱动用电动机12与第一实施方式的电力转换装置控制系统S的电动机12同样构成。
发电用电动机13通过输入到旋转轴(未图示)的旋转驱动力产生发电电力。
电力转换装置1将从电池11供给的直流电力转换为交流电力,将交流电力供给到行驶驱动用电动机12。
电子控制单元28对电力转换装置1进行控制,由此对行驶驱动用电动机12进行控制。详细地讲,电子控制单元28通过同步控制(详细地讲为同步PWM控制)和非同步控制(详细地讲为非同步PWM控制)对向行驶驱动用电动机12供给电力的电力转换装置1进行控制。
第二实施方式的电动机系统MS的非同步PWM控制映射与图3所示的第一实施方式的电力转换装置控制系统S的非同步PWM控制映射同样构成。
第二实施方式的电动机系统MS的同步PWM控制映射与图4所示的第一实施方式的电力转换装置控制系统S的同步PWM控制映射同样构成。
第二实施方式的电动机系统MS的电子控制单元28与第一实施方式的电力转换装置控制系统S的电子控制单元28同样,执行图5所示的处理。
详细地讲,在图5的步骤S1中,电子控制单元28的例如控制部28A取得由电动机转速计算部28B计算出的行驶驱动用电动机12的转速。
在图5的步骤S2中,例如控制部28A取得由温度计算部28A8计算出的行驶驱动用电动机12的永久磁铁12A1的温度。
在图5的步骤S3中,例如控制部28A取得上述非同步PWM控制映射和上述同步PWM控制映射。
在图5的步骤S4中,例如控制部28A判定行驶驱动用电动机12的永久磁铁12A1的温度是否高于保护阈值(详细地讲为永久磁铁12A1的温度的极限值)。
在图5的步骤S5中,例如控制部28A判定行驶驱动用电动机12的永久磁铁12A1的温度是否为规定的阈值(<保护阈值)以下。
在图5的步骤S6中,例如控制部28A判定行驶驱动用电动机12的转速是否是能够执行同步PWM控制的转速。
在图5的步骤S7中,控制部28A执行基于上述非同步PWM控制映射的非同步PWM控制,抑制与载波频率的切换相伴的噪音和振动,提高电动机系统MS的商品性。
在图5的步骤S8中,控制部28A执行基于上述同步PWM控制映射的同步PWM控制,抑制行驶驱动用电动机12的永久磁铁12A1的温度的上升,提高电动机系统MS的可靠性。
在图5的步骤S9中,控制部28A进行限制电动机12的输出的控制,降低永久磁铁12A1的温度。
即,在第二实施方式的电动机系统MS中,根据行驶驱动用电动机12的永久磁铁12A1的温度,对保护永久磁铁12A1的控制(同步PWM控制)和提高商品性的控制(非同步PWM控制)进行切换。其结果,能够同时实现电动机系统MS的可靠性的提高和商品性的提高。
<第三实施方式>
下面,对本发明的第三实施方式进行说明。
除了后述方面,第三实施方式的复合系统CS与上述第一实施方式的电力转换装置控制系统S同样构成。因此,根据第三实施方式的复合系统CS,除了后述方面,能够发挥与上述第一实施方式的电力转换装置控制系统S相同的效果。
图7是示出第三实施方式的复合系统CS的一例的图。
在图7所示的例子中,复合系统CS具有与第一电力转换装置控制系统S同样构成的电力转换装置控制系统S、电池11、作为旋转电机的行驶驱动用电动机12、发电用电动机13、内燃机ENG、车轮WL、离合器CT。
复合系统CS应用于车辆10。即,电力转换装置控制系统S搭载在车辆10上。
行驶驱动用电动机12通过从电池11供给的电力产生旋转驱动力(动力运行动作),对车辆10的车轮WL进行驱动。第三实施方式的复合系统CS的行驶驱动用电动机12与第一实施方式的电力转换装置控制系统S的电动机12同样构成。
车轮WL也能够通过内燃机ENG进行驱动。在车轮WL与内燃机ENG之间配置有离合器CT。在车轮WL和内燃机ENG经由离合器CT连接的情况下,内燃机ENG能够对车轮WL进行驱动。发电用电动机13通过内燃机ENG产生的旋转驱动力产生发电电力。
电力转换装置1将从电池11供给的直流电力转换为交流电力,将交流电力供给到行驶驱动用电动机12。
电子控制单元28对电力转换装置1进行控制,由此对行驶驱动用电动机12进行控制。详细地讲,电子控制单元28通过同步控制(详细地讲为同步PWM控制)和非同步控制(详细地讲为非同步PWM控制)对向行驶驱动用电动机12供给电力的电力转换装置1进行控制。
第三实施方式的复合系统CS的非同步PWM控制映射与图3所示的第一实施方式的电力转换装置控制系统S的非同步PWM控制映射同样构成。
第三实施方式的复合系统CS的同步PWM控制映射与图4所示的第一实施方式的电力转换装置控制系统S的同步PWM控制映射同样构成。
图8是示出由第三实施方式的复合系统CS的电子控制单元28执行的处理的一例的流程图。
在图8所示的例子中,在步骤S11中,复合系统CS判定内燃机ENG是否运转。在内燃机ENG未运转的情况下,进入步骤S12。另一方面,在内燃机ENG运转的情况下,进入步骤S13。
在步骤S12中,复合系统CS判定车辆10的行驶速度是否为规定速度以上。在车辆10的行驶速度为规定速度以上的情况下,进入步骤S13。另一方面,在车辆10的行驶速度小于规定速度的情况下,进入步骤S14。
在步骤S13中,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。即,在步骤S13中,电力转换装置控制系统S成为同步PWM控制模式(磁铁温度上升抑制模式)。
在步骤S14中,电子控制单元28执行与图5所示的处理相同的主处理。
即,在步骤S14中,在行驶驱动用电动机12的永久磁铁12A1的温度为保护阈值以下的情况下(图5的步骤S4为“否”的情况下)、且行驶驱动用电动机12的永久磁铁12A1的温度高于规定的阈值的情况下(图5的步骤S5为“否”的情况下)、且行驶驱动用电动机12的转速是能够执行同步PWM控制的转速的情况下(图5的步骤S6为“是”的情况下),控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制(图5的步骤S8)。即,电力转换装置控制系统S成为同步PWM控制模式。
在步骤S14中,在行驶驱动用电动机12的永久磁铁12A1的温度为规定的阈值以下的情况下(图5的步骤S4为“否”且步骤S5为“是”的情况下),控制部28A通过基于上述非同步PWM控制映射的非同步PWM控制对电力转换装置1进行控制(图5的步骤S7)。即,电力转换装置控制系统S成为通常运转模式。
另外,在步骤S14中,在行驶驱动用电动机12的永久磁铁12A1的温度为保护阈值以下的情况下(图5的步骤S4为“否”的情况下)、且行驶驱动用电动机12的永久磁铁12A1的温度高于规定的阈值的情况下(图5的步骤S5为“否”的情况下)、且行驶驱动用电动机12的转速是无法执行同步PWM控制的转速的情况下(图5的步骤S6为“否”的情况下),控制部28A对电力转换装置1执行基于上述非同步PWM控制映射的非同步PWM控制(图5的步骤S7)。即,电力转换装置控制系统S成为通常运转模式。
如上所述,在第一实施方式的电力转换装置控制系统S中,在电动机12的永久磁铁12A1的温度高于规定的阈值的情况下,在图5的步骤S8中,控制部28A通过基于图3所示的同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
另一方面,在第三实施方式的复合系统CS中,在内燃机ENG运转的情况下(图8的步骤S11为“是”的情况下),不执行图8的步骤S14,在图8的步骤S13中,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
即,在第三实施方式的复合系统CS中,在内燃机ENG运转的情况下(图8的步骤S11为“是”的情况下),即使行驶驱动用电动机12的永久磁铁12A1的温度为规定的阈值以下,控制部28A也允许通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
因此,在第三实施方式的复合系统CS中,在内燃机ENG的运转时(图8的步骤S11为“是”的情况下),进行行驶驱动用电动机12的同步PWM控制,由此,能够提高节能性,并且通过内燃机ENG的运转来满足用户。
即,在第三实施方式的复合系统CS中,一边进行内燃机ENG的运转,一边进行行驶驱动用电动机12的同步PWM控制,因此,能够抑制用户不满足进行行驶驱动用电动机12的同步PWM控制的可能性。
另外,在第三实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图8的步骤S12为“是”的情况下),不执行图8的步骤S14,在图8的步骤S13中,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
即,在第三实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图8的步骤S12为“是”的情况下),即使行驶驱动用电动机12的永久磁铁12A1的温度为规定的阈值以下,控制部28A也允许通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
因此,在第三实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图8的步骤S12为“是”的情况下),进行行驶驱动用电动机12的同步PWM控制,由此,能够提高节能性,通过规定速度以上的车辆10的行驶速度来满足用户。即,在第三实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的状态下进行行驶驱动用电动机12的同步PWM控制,因此,能够抑制用户不满足进行行驶驱动用电动机12的同步PWM控制的可能性。
<第四实施方式>
下面,对本发明的第四实施方式进行说明。
除了后述方面,第四实施方式的复合系统CS与上述第三实施方式的复合系统CS同样构成。因此,根据第四实施方式的复合系统CS,除了后述方面,能够发挥与上述第三实施方式的复合系统CS相同的效果。
第四实施方式的复合系统CS的非同步PWM控制映射与图3所示的第一实施方式的电力转换装置控制系统S的非同步PWM控制映射同样构成。
第四实施方式的复合系统CS的同步PWM控制映射与图4所示的第一实施方式的电力转换装置控制系统S的同步PWM控制映射同样构成。
图9是示出由第四实施方式的复合系统CS的电子控制单元28执行的处理的一例的流程图。
在图9所示的例子中,在步骤S21中,复合系统CS判定内燃机ENG的转速是否为规定转速以上。在内燃机ENG的转速小于规定转速的情况下,进入步骤S22。另一方面,在内燃机ENG的转速为规定转速以上的情况下,进入步骤S23。
在步骤S22中,复合系统CS判定车辆10的行驶速度是否为规定速度以上。在车辆10的行驶速度为规定速度以上的情况下,进入步骤S23。另一方面,在车辆10的行驶速度小于规定速度的情况下,进入步骤S24。
在步骤S23中,与步骤S13同样,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。即,在步骤S23中,电力转换装置控制系统S成为同步PWM控制模式(磁铁温度上升抑制模式)。
在步骤S24中,电子控制单元28执行与图5所示的处理相同的主处理(即与图8的步骤S14相同的处理)。
如上所述,在第一实施方式的电力转换装置控制系统S中,在电动机12的永久磁铁12A1的温度高于规定的阈值的情况下,在图5的步骤S8中,控制部28A对电力转换装置1执行基于图3所示的同步PWM控制映射的同步PWM控制。
另一方面,在第四实施方式的复合系统CS中,在内燃机ENG的转速为规定转速以上的情况下(图9的步骤S21为“是”的情况下),不执行图9的步骤S24,在图9的步骤S23中,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
即,在第四实施方式的复合系统CS中,在内燃机ENG的转速为规定转速以上的情况下(图9的步骤S21为“是”的情况下),即使行驶驱动用电动机12的永久磁铁12A1的温度为规定的阈值以下,控制部28A也允许通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
因此,在第四实施方式的复合系统CS中,在内燃机ENG的转速为规定转速以上的情况下(图9的步骤S21为“是”的情况下),进行行驶驱动用电动机12的同步PWM控制,由此,能够提高节能性,并且通过规定转速以上的内燃机ENG的运转来满足用户。即,在第四实施方式的复合系统CS中,在内燃机ENG的转速为规定转速以上的状态下进行行驶驱动用电动机12的同步PWM控制,因此,能够抑制用户不满足进行行驶驱动用电动机12的同步PWM控制的可能性。
另外,在第四实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图9的步骤S22为“是”的情况下),不执行图9的步骤S24,在图9的步骤S23中,控制部28A通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
即,在第四实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图9的步骤S22为“是”的情况下),即使行驶驱动用电动机12的永久磁铁12A1的温度为规定的阈值以下,控制部28A也允许通过基于上述同步PWM控制映射的同步PWM控制对电力转换装置1进行控制。
因此,在第四实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的情况下(图9的步骤S22为“是”的情况下),进行行驶驱动用电动机12的同步PWM控制,由此,能够提高节能性,通过规定速度以上的车辆10的行驶速度来满足用户。即,在第四实施方式的复合系统CS中,在车辆10的行驶速度为规定速度以上的状态下进行行驶驱动用电动机12的同步PWM控制,因此,能够抑制用户对进行行驶驱动用电动机12的同步PWM控制存在不满的可能性。
<应用例>
下面,参照附图对上述第一实施方式的电力转换装置控制系统S、第二实施方式的电动机系统MS、第三或第四实施方式的复合系统CS的应用例进行说明。
图10是示出能够应用第一实施方式的电力转换装置控制系统S、第二实施方式的电动机系统MS、第三或第四实施方式的复合系统CS的车辆10的一部分的一例的图。
在图10所示的例子中,车辆10在电力转换装置控制系统S的电力转换装置1的基础上,还具有电池11(BATT)、行驶驱动用的第一电动机12(MOT)、发电用的第二电动机13(GEN)。
电池11具有电池壳体和收容在电池壳体内的多个电池模块。电池模块具有串联连接的多个电池单体。电池11具有与电力转换装置1的直流连接器1a连接的正极端子PB和负极端子NB。正极端子PB和负极端子NB在电池壳体内与串联连接的多个电池模块的正极端和负极端连接。
第一电动机12通过从电池11供给的电力产生旋转驱动力(动力运行动作)。第二电动机13通过输入到旋转轴的旋转驱动力产生发电电力。这里,构成为能够向第二电动机13传递内燃机ENG(参照图7)的旋转动力。例如,第一电动机12和第二电动机13分别是三相交流的无刷DC电动机。三相是U相、V相和W相。第一电动机12和第二电动机13分别为内转子型。如图1所示,第一电动机12具备具有励磁用的永久磁铁12A1的转子12A、以及具有用于产生使转子12A旋转的旋转磁场的三相的定子绕组的定子12B。同样,第二电动机13具备具有励磁用的永久磁铁的转子、以及具有用于产生使转子旋转的旋转磁场的三相的定子绕组的定子。第一电动机12的三相的定子绕组与电力转换装置1的第一三相连接器1b连接。第二电动机13的三相的定子绕组与电力转换装置1的第二三相连接器1c连接。
图10所示的电力转换装置1具有功率模块21、电抗器22、电容器单元23、电阻器24、第一电流传感器25、第二电流传感器26、第三电流传感器27。电力转换装置控制系统S具有电子控制单元28(MOT GEN ECU)、栅极驱动单元29(G/D VCU ECU)(逆变器控制部28A7(参照图2))。
功率模块21具有第一电力转换电路部31、第二电力转换电路部32、第三电力转换电路部33。
第一电力转换电路部31的输出侧导电体(输出母线)51汇集成U相、V相和W相这三个相,与第一三相连接器1b连接。即,第一电力转换电路部31的输出侧导电体51经由第一三相连接器1b而与第一电动机12的三相的定子绕组连接。
第一电力转换电路部31的正极侧导电体(P母线)PI汇集成U相、V相和W相这三个相,与电池11的正极端子PB连接。
第一电力转换电路部31的负极侧导电体(N母线)NI汇集成U相、V相和W相这三个相,与电池11的负极端子NB连接。
即,第一电力转换电路部31将从电池11经由第三电力转换电路部33输入的直流电力转换为三相交流电力。
第二电力转换电路部32的输出侧导电体(输出母线)52汇集成U相、V相和W相这三个相,与第二三相连接器1c连接。即,第二电力转换电路部32的输出侧导电体52经由第二三相连接器1c而与第二电动机13的三相的定子绕组连接。
第二电力转换电路部32的正极侧导电体(P母线)PI汇集成U相、V相和W相这三个相,与电池11的正极端子PB和第一电力转换电路部31的正极侧导电体PI连接。
第二电力转换电路部32的负极侧导电体(N母线)NI汇集成U相、V相和W相这三个相,与电池11的负极端子NB和第二电力转换电路部32的负极侧导电体NI连接。
第二电力转换电路部32将从第二电动机13输入的三相交流电力转换为直流电力。由第二电力转换电路部32转换后的直流电力能够供给到电池11和第一电力转换电路部31中的至少一方。
在图10所示的例子中,第一电力转换电路部31的U相开关元件UH、V相开关元件VH、W相开关元件WH和第二电力转换电路部32的U相开关元件UH、V相开关元件VH、W相开关元件WH与正极侧导电体PI连接。正极侧导电体PI与电容器单元23的正极母线50p连接。
第一电力转换电路部31的U相开关元件UL、V相开关元件VL、W相开关元件WL和第二电力转换电路部32的U相开关元件UL、V相开关元件VL、W相开关元件WL与负极侧导电体NI连接。负极侧导电体NI与电容器单元23的负极母线50n连接。
在图10所示的例子中,第一电力转换电路部31的U相开关元件UH与U相开关元件UL的连接点TI、V相开关元件VH与V相开关元件VL的连接点TI、W相开关元件WH与W相开关元件WL的连接点TI与输出侧导电体51连接。
第二电力转换电路部32的U相开关元件UH与U相开关元件UL的连接点TI、V相开关元件VH与V相开关元件VL的连接点TI、W相开关元件WH与W相开关元件WL的连接点TI与输出侧导电体52连接。
在图10所示的例子中,第一电力转换电路部31的输出侧导电体51与第一输入输出端子Q1连接。第一输入输出端子Q1与第一三相连接器1b连接。第一电力转换电路部31的各相的连接点TI经由输出侧导电体51、第一输入输出端子Q1和第一三相连接器1b而与第一电动机12的各相的定子绕组连接。
第二电力转换电路部32的输出侧导电体52与第二输入输出端子Q2连接。第二输入输出端子Q2与第二三相连接器1c连接。第二电力转换电路部32的各相的连接点TI经由输出侧导电体52、第二输入输出端子Q2和第二三相连接器1c而与第二电动机13的各相的定子绕组连接。
在图10所示的例子中,第一电力转换电路部31的开关元件UH、UL、VH、VL、WH、WL分别具有续流二极管。
同样,第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL分别具有续流二极管。
在图10所示的例子中,栅极驱动单元29(逆变器控制部28A7(参照图2))分别向第一电力转换电路部31的开关元件UH、UL、VH、VL、WH、WL输入栅极信号。
同样,栅极驱动单元29分别向第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL输入栅极信号。
第一电力转换电路部31将从电池11经由第三电力转换电路部33输入的直流电力转换为三相交流电力,向第一电动机12的三相的定子绕组供给交流的U相电流、V相电流和W相电流。第二电力转换电路部32通过与第二电动机13的旋转取得了同步的第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL各自的接通(导通)/断开(截止)驱动,将从第二电动机13的三相的定子绕组输出的三相交流电力转换为直流电力。
第三电力转换电路部33是电压控制单元(VCU)。第三电力转换电路部33具有1个相的高侧的开关元件S1和低侧的开关元件S2。
开关元件S1的正极侧的电极与正极母线PV连接。正极母线PV与电容器单元23的正极母线50p连接。开关元件S2的负极侧的电极与负极母线NV连接。负极母线NV与电容器单元23的负极母线50n连接。电容器单元23的负极母线50n与电池11的负极端子NB连接。开关元件S1的负极侧的电极与开关元件S2的正极侧的电极连接。开关元件S1和开关元件S2具有续流二极管。
构成第三电力转换电路部33的开关元件S1与开关元件S2的连接点的母线53与电抗器22的一端连接。电抗器22的另一端与电池11的正极端子PB连接。电抗器22具有线圈和检测线圈的温度的温度传感器。温度传感器通过信号线而与电子控制单元28连接。
第三电力转换电路部33根据从栅极驱动单元29输入到开关元件S1的栅极电极和开关元件S2的栅极电极的栅极信号,切换开关元件S1和开关元件S2的接通(导通)/断开(截止)。
第三电力转换电路部33在升压时,交替切换开关元件S2设定为接通(导通)且开关元件S1设定为断开(遮断)的第一状态以及开关元件S2设定为断开(遮断)且开关元件S1设定为接通(导通)的第二状态。在第一状态下,依次向电池11的正极端子PB、电抗器22、开关元件S2、电池11的负极端子NB流过电流,电抗器22被直流励磁而蓄积磁能。在第二状态下,妨碍由于流过电抗器22的电流被遮断而引起的磁通变化,在电抗器22的两端之间产生起电电压(感应电压)。基于电抗器22中蓄积的磁能的感应电压与电池电压重叠,对第三电力转换电路部33的正极母线PV与负极母线NV之间施加比电池11的端子间电压高的升压电压。
第三电力转换电路部33在再生时交替切换第二状态和第一状态。在第二状态下,依次向第三电力转换电路部33的正极母线PV、开关元件S1、电抗器22、电池11的正极端子PB流过电流,电抗器22被直流励磁而蓄积磁能。在第一状态下,妨碍由于流过电抗器22的电流被遮断而引起的磁通变化,在电抗器22的两端之间产生起电电压(感应电压)。基于电抗器22中蓄积的磁能的感应电压被降压,对电池11的正极端子PB与负极端子NB之间施加比第三电力转换电路部33的正极母线PV和负极母线NV之间的电压低的降压电压。
电容器单元23具有第一平滑电容器41、第二平滑电容器42、噪声滤波器43。
第一平滑电容器41连接在电池11的正极端子PB与负极端子NB之间。第一平滑电容器41对伴随第三电力转换电路部33的再生时的开关元件S1和开关元件S2的接通/断开的切换动作而产生的电压变动进行平滑化。
第二平滑电容器42连接在第一电力转换电路部31和第二电力转换电路部32各自的正极侧导电体PI和负极侧导电体NI之间、以及第三电力转换电路部33的正极母线PV和负极母线NV之间。第二平滑电容器42经由正极母线50p和负极母线50n而与多个正极侧导电体PI和负极侧导电体NI、以及正极母线PV和负极母线NV连接。第二平滑电容器42对伴随第一电力转换电路部31和第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL各自的接通/断开的切换动作而产生的电压变动进行平滑化。第二平滑电容器42对伴随第三电力转换电路部33的升压时的开关元件S1和开关元件S2的接通/断开的切换动作而产生的电压变动进行平滑化。
噪声滤波器43连接在第一电力转换电路部31和第二电力转换电路部32各自的正极侧导电体PI和负极侧导电体NI之间、以及第三电力转换电路部33的正极母线PV和负极母线NV之间。噪声滤波器43具有串联连接的2个电容器。2个电容器的连接点与车辆10的车身搭铁等连接。
电阻器24连接在第一电力转换电路部31和第二电力转换电路部32各自的正极侧导电体PI和负极侧导电体NI之间、以及第三电力转换电路部33的正极母线PV和负极母线NV之间。
第一电流传感器25配置在构成第一电力转换电路部31的各相的连接点TI且与第一输入输出端子Q1连接的输出侧导电体51上,检测U相、V相和W相各自的电流。第二电流传感器26配置在构成第二电力转换电路部32的各相的连接点TI且与第二输入输出端子Q2连接的输出侧导电体52上,检测U相、V相和W相各自的电流。第三电流传感器27配置在构成开关元件S1和开关元件S2的连接点且与电抗器22连接的母线53上,检测流过电抗器22的电流。
第一电流传感器25、第二电流传感器26和第三电流传感器27分别通过信号线而与电子控制单元28连接。
电子控制单元28对第一电动机12和第二电动机13各自的动作进行控制。例如,电子控制单元28是通过CPU(Central Processing Unit)等处理器执行规定的程序而发挥功能的软件功能部。软件功能部是具有CPU等处理器、存储程序的ROM(Read Only Memory)、暂时存储数据的RAM(Random Access Memory)和计时器等电子电路的ECU(ElectronicControl Unit)。需要说明的是,电子控制单元28中的至少一部分也可以是LSI(LargeScale Integration)等集成电路。例如,电子控制单元28使用第一电流传感器25的电流检测值和与针对第一电动机12的转矩指令值对应的电流目标值执行电流的反馈控制等,生成输入到栅极驱动单元29(逆变器控制部28A7(参照图2))的控制信号。例如,电子控制单元28使用第二电流传感器26的电流检测值和与针对第二电动机13的再生指令值对应的电流目标值执行电流的反馈控制等,生成输入到栅极驱动单元29的控制信号。控制信号是表示对第一电力转换电路部31和第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL分别进行接通(导通)/断开(截止)驱动的时机的信号。例如,控制信号是进行脉冲宽度调制后的信号等。
栅极驱动单元29(逆变器控制部28A7(参照图2))根据从电子控制单元28接收的控制信号,生成用于实际对第一电力转换电路部31和第二电力转换电路部32的开关元件UH、UL、VH、VL、WH、WL分别进行接通(导通)/断开(截止)驱动的栅极信号。例如,栅极驱动单元29执行控制信号的放大和电平移动等,生成栅极信号。
栅极驱动单元29生成用于对第三电力转换电路部33的开关元件S1和开关元件S2分别进行接通(导通)/断开(截止)驱动的栅极信号。例如,栅极驱动单元29生成与第三电力转换电路部33的升压时的升压电压指令或第三电力转换电路部33的再生时的降压电压指令对应的占空比的栅极信号。占空比是开关元件S1和开关元件S2的比率。
在图10所示的例子中,第一实施方式的电力转换装置控制系统S或第二实施方式的电动机系统MS应用于车辆10,但是,在其他例子中,例如也可以对电梯、泵、风扇、铁道车辆、空调机、冰箱、洗衣机等车辆10以外的装置应用第一实施方式的电力转换装置控制系统S或第二实施方式的电动机系统MS。
本发明的实施方式作为例子进行提示,并不意图限定发明的范围。这些实施方式能够以其他各种方式进行实施,能够在不脱离发明主旨的范围内进行各种省略、置换、变更。这些实施方式及其变形包含在发明的范围和主旨内,同样,包含在权利请求的范围所记载的发明及其等同的范围内。

Claims (5)

1.一种电力转换装置控制系统,其具有:
电力转换装置,其向旋转电机供给电力;以及
控制装置,其对所述电力转换装置通过脉冲宽度调制控制进行控制,
所述控制装置在所述旋转电机所具有的永久磁铁的温度高于规定的阈值的情况下,
通过所述电力转换装置的所述脉冲宽度调制控制中的载波频率与所述旋转电机的转速成比例的同步控制对所述电力转换装置进行控制,
在所述永久磁铁的温度为所述规定的阈值以下的情况下,
通过所述电力转换装置的所述脉冲宽度调制控制中的载波频率不与所述旋转电机的转速成比例的非同步控制对所述电力转换装置进行控制。
2.一种电动机系统,其具有权利要求1所述的电力转换装置控制系统、作为所述旋转电机的行驶驱动用电动机和发电用电动机,
所述控制装置通过所述同步控制和所述非同步控制对向所述行驶驱动用电动机供给电力的所述电力转换装置进行控制。
3.一种复合系统,其具有权利要求1所述的电力转换装置控制系统、所述旋转电机和内燃机,
在所述内燃机运转的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
4.一种复合系统,其具有权利要求1所述的电力转换装置控制系统、所述旋转电机和内燃机,
在所述内燃机的转速为规定转速以上的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
5.根据权利要求1所述的电力转换装置控制系统,其中,
所述电力转换装置控制系统搭载在车辆上,
所述旋转电机用于所述车辆的驱动行驶,
在所述车辆的行驶速度为规定速度以上的情况下,即使所述永久磁铁的温度为所述规定的阈值以下,所述控制装置也允许通过所述同步控制对所述电力转换装置进行控制。
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