JP2008296834A - Main circuit cooling system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise emitted by blower operation while thermally protecting a transformer, a power conversion system and/or a driving motor by using the transformer blower, power conversion system blower and/or motor blower. <P>SOLUTION: The main circuit cooling system reduces noise emitted by a blower operation while thermally protecting the transformer 11 consisting of the main circuit, the power conversion system 12, and the driving motor 12, by controlling ON/OFF operation of the transformer blower 41, the power conversion system blower 51 and the motor blower 61 so that they are operated only when cooling is needed, and they are stopped when cooling is not needed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a main circuit cooling device that cools a main circuit by performing on / off control of a blower that cools a drive motor, a power conversion device, and / or a transformer constituting a main circuit of a vehicle.

  Like a Shinkansen train, the vehicle transforms the AC overhead line voltage into the vehicle and takes it into the vehicle, the main power converter that converts the transformer transformer output from AC to DC to AC, and this main power. A main motor for driving the vehicle that is rotationally driven by the converted electric power of the converter is provided, and these constitute a main circuit.

  A large current flows through the main transformer, main power converter, and main motor that constitute the main circuit, so the temperature rises rapidly. Therefore, conventionally, a transformer blower, a power converter blower, and a motor blower are installed to protect the equipment by blowing cooling air to the main transformer, main power converter, and main motor to suppress temperature rise. Has been.

  However, the conventional main circuit cooling device has a problem of high noise because all of these blowers are always operated during operation of the vehicle, even while the vehicle is stopped at the station.

On the other hand, considering the temperature rise of each device in the actual operation state of the vehicle, the period of stopping at the station and the period of traveling at constant speed are long, but during these periods a large current flows to each device. Therefore, the temperature rise is relatively small. A large temperature increase mainly occurs during a period of acceleration operation from a stationary state such as a station departure / arrival period to a constant speed running. Therefore, as shown in FIG. 10, it is necessary to actually cool the equipment by operating the transformer blower, the power converter blower, and the motor blower when the temperature exceeds the line L1. . Therefore, even if the blower is stopped if there is an operation situation that does not exceed the line L1, there is no adverse effect due to temperature on the equipment. In addition, noise can be reduced by stopping the blower.
JP-A-6-84001

  The present invention has been made in view of the above-described problems of the prior art, and operates a blower for a transformer, a blower for a power converter, and / or a motor blower only in a situation where cooling of the device is substantially necessary. Providing a main circuit cooling device that reduces the noise generated by blower operation while protecting the temperature of transformers, power converters and / or drive motors that constitute the main circuit by performing on / off control to stop in the situation The purpose is to do.

  One feature of the present invention is a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a conversion power of the power converter. A main circuit including a drive motor to be driven; a motor blower for cooling the drive motor; current / voltage detection means for detecting current / voltage to the drive motor; and a motor current detected by the current / voltage detection means Motor temperature calculation means for calculating the temperature of the drive motor based on the voltage, and motor blower control means for controlling on / off operation of the motor blower based on the temperature of the drive motor calculated by the motor temperature calculation means. It is the main circuit cooling device provided.

  Another feature of the present invention is a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to a transformer output of the transformer, and a converted power of the power converter. A main circuit having a drive motor to be driven; a motor blower for cooling the drive motor; motor temperature detection means for detecting the temperature of the drive motor; and the temperature of the drive motor detected by the motor temperature detection means. And a motor blower control means for controlling the on / off operation of the motor blower.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A motor circuit driven by a motor, a motor blower for cooling the drive motor, and a timing for turning on and off the motor blower corresponding to the operation plan of the vehicle. And a motor blower control means for monitoring the operation status of the vehicle and controlling the on / off operation of the motor blower with reference to the motor blower on / off operation plan. It is a cooling device.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A power circuit, a power converter blower for cooling the power converter, a current / voltage detector for detecting a current / voltage for the power converter, and the current / voltage Power converter temperature calculating means for calculating the temperature of the power converter based on the current / voltage detected by the detecting means, and the power conversion based on the temperature of the power converter calculated by the power converter temperature calculating means It is a main circuit cooling device provided with the blower control means for power converters which controls the on / off operation of the blower for devices.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A power converter blower for cooling the power converter, power converter temperature detecting means for detecting the temperature of the power converter, and the power converter temperature. It is a main circuit cooling device provided with the power converter blower control means for controlling the on / off operation of the power converter blower based on the temperature of the power converter detected by the detecting means.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A power circuit driven drive motor, a power converter blower for cooling the power converter, and a timing for turning on the power converter blower corresponding to the vehicle operation plan. The power converter blower operation plan holding means for holding the timing as a power converter blower on / off operation plan, the operation status of the vehicle is monitored, and the power is referred to the power converter blower on / off operation plan. It is a main circuit cooling device provided with the blower control means for power converters which controls the ON / OFF operation of the blower for converters.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A drive circuit driven by the main circuit, a transformer blower for cooling the transformer, current / voltage detection means for detecting current / voltage to the transformer, and detection of the current / voltage detection means A transformer temperature calculating means for calculating the temperature of the transformer based on the measured current and voltage, and controlling the on / off operation of the transformer blower based on the temperature of the transformer calculated by the transformer temperature calculating means. And a transformer blower control means.

  Another feature of the present invention includes a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to the transformer output of the transformer, and a converted power of the power converter. A drive circuit driven by the main circuit, a transformer blower for cooling the transformer, transformer temperature detection means for detecting the temperature of the transformer, and the temperature detected by the transformer temperature detection means. And a transformer blower control means for controlling on / off operation of the transformer blower based on the temperature of the transformer.

  Still another feature of the present invention is that a transformer for transforming an AC overhead line voltage into a vehicle, a power converter for converting power to a transformer output of the transformer, and a converted power of the power converter A drive circuit driven by a motor, a transformer blower for cooling the transformer, a timing for turning on the transformer blower corresponding to the operation plan of the vehicle, and a timing for turning off the transformer blower. Transformer blower operation plan holding means to be held as an off / off plan, and a transformer for monitoring the operation status of the vehicle and controlling on / off operation of the transformer blower with reference to the blower on / off operation plan for the transformer A main circuit cooling device including a blower control means for appliances.

  According to the main circuit cooling apparatus of the present invention, the motor blower is turned on / off based on the temperature state calculated from the power supply state of the drive motor, the actual temperature state of the drive motor, or the blower on / off operation plan based on the vehicle operation plan. Since the operation is controlled, an off period can be provided according to the temperature state of the drive motor without always turning on the motor blower, and noise can be reduced when the motor blower is always operated.

  Further, according to the main circuit cooling device of the present invention, the power is based on the temperature state calculated from the energization state of the power converter, the actual temperature state of the power converter, or the blower on / off operation plan based on the vehicle operation plan. Since the on / off operation of the converter blower is controlled, an off period can be provided according to the temperature state of the power converter without always turning on the power converter blower. Noise can be reduced by operating constantly.

  Furthermore, according to the main circuit cooling device of the present invention, the blower for transformer is based on the temperature state calculated from the energization state of the transformer, the actual temperature state of the transformer, or the blower on / off operation plan based on the vehicle operation plan. Since the on / off operation is controlled, an off period can be provided according to the temperature state of the transformer without always turning on the transformer blower, and noise is reduced when the transformer blower is always operated. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  (First Embodiment) A main circuit cooling apparatus according to a first embodiment of the present invention will be described with reference to FIG. A transformer 11 for transforming an AC overhead line voltage taken from the AC overhead line 1 through a current collector 10 such as a pantograph and taking it into the vehicle, and a power for converting the transformation output of the transformer 11 into an AC-DC-AC power The converter 12 and the drive motor 13 driven by the converted power of the power converter 12 form a main circuit. A motor blower (BRA) 61 that blows air to cool the drive motor 13 is installed near the drive motor 13.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the motor blower 61, the motor current / voltage detector 62 for detecting the current Im flowing through the drive motor 13 and the applied voltage Vm, and the motor A motor temperature calculation unit 63 for calculating the temperature of the drive motor 13 based on the motor current Im and the motor voltage Vm detected by the current / voltage detector 62, and a motor estimated temperature Tmet calculated by the motor temperature calculation unit 63 are calculated in advance. A motor blower control unit 64 that controls the on / off operation of the motor blower 61 by comparing with the set blower on / off reference temperature Tmrf is provided.

  In the main circuit cooling apparatus of the above embodiment, the motor blower 61 is controlled to be turned on / off for cooling the drive motor 13 as follows. The temperature rise of the drive motor 13 can be calculated by a function of the current Im flowing through the drive motor 13 and the applied voltage Vm. For example, for the estimated drive motor temperature Tmet, Tmet = fm (Im, Vm), where fm is a function.

  Therefore, the motor temperature calculation unit 63 calculates the estimated motor temperature Tmet based on the motor current Im and voltage Vm detected by the motor current / voltage detector 62, and outputs the calculated estimated motor temperature Tmet to the motor blower control unit 64. . The motor blower control unit 64 compares the estimated motor temperature Tmet with a preset blower on / off reference temperature Tmrf. When the estimated motor temperature Tmet exceeds the reference temperature Tmrf, the motor blower 61 is turned on to estimate the estimated motor temperature. When Tmet becomes equal to or lower than the reference temperature Tmrf, the motor blower 61 is turned off.

  As a result, according to the main circuit cooling apparatus of the present embodiment, when it is estimated that a large current flows through the drive motor 13 and the temperature rises before the reference temperature Tmrf is exceeded, the motor blower 61 is turned on. If the drive motor 13 is cooled to suppress the temperature rise, but the current flowing through the drive motor 13 is small and it is estimated that the temperature rise will not rise beyond the reference temperature Tmrf, the motor blower 61 is turned on. The noise generated by the blower operation can be suppressed by turning it off.

  (Second Embodiment) A main circuit cooling apparatus according to a second embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling device of the present embodiment, in order to control the on / off operation of the motor blower 61, the motor temperature sensor 65 that detects the actual temperature Tmrl of the drive motor 13 and the drive detected by the motor temperature sensor 65 are detected. A motor blower control unit 64 for comparing the actual temperature Tmrl of the motor 13 with a preset blower on / off reference temperature Tmrf and controlling the motor blower 61 on / off is provided.

  In the main circuit cooling apparatus of the above embodiment, the motor blower 61 is controlled to be turned on / off for cooling the drive motor 13 as follows. The motor temperature sensor 65 detects the actual temperature Tmrl of the drive motor 13 and outputs it to the motor blower control unit 64. The motor blower control unit 64 compares the actual temperature Tmrl of the motor with a preset blower on / off reference temperature Tmrf. When the motor actual temperature Tmrl exceeds the reference temperature Tmrf, the motor blower 61 is turned on, When the temperature Tmrl falls below the reference temperature Tmrf, the motor blower 61 is turned off.

  As a result, according to the main circuit cooling apparatus of the present embodiment, when the motor actual temperature Tmrl rises until a large current flows through the drive motor 13 or exceeds the reference temperature due to other reasons, the motor blower 61 is turned on. However, if the actual temperature of the drive motor 13 does not rise so as to exceed the reference temperature, the motor blower 61 is turned off to suppress noise generated by the blower operation. be able to.

  (Third Embodiment) A main circuit cooling apparatus according to a third embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the motor blower 61, the timing for turning on and off the motor blower 61 corresponding to the vehicle operation plan is set to the motor blower on / off operation. A motor blower operation plan storage unit 66 held as a plan and an elapsed time from the starting station of the vehicle are monitored, and a blower on operation period is referred to by referring to a motor blower on / off operation plan held in the motor blower operation plan storage unit 66 Or a motor blower control section 64-1 that controls whether the motor blower 61 is on or off based on this determination.

  In the main circuit cooling apparatus of the above embodiment, the motor blower 61 is controlled to be turned on / off for cooling the drive motor 13 as follows. The motor blower operation plan storage unit 66 holds in advance a motor blower operation plan in which the ON period and the OFF period of the motor blower 61 are set in correspondence with the elapsed time from the departure time of the starting station on the operation route of the vehicle. Since the vehicle is operated according to a predetermined schedule, at which point (which corresponds to the elapsed time from the departure from the first station), a large current flows and the temperature of the drive motor 13 increases rapidly. Then, since constant speed running is performed, it is empirically known that the current flowing through the drive motor 13 is small and the temperature rise is small. Accordingly, an appropriate motor blower on / off operation plan is created in order to effectively suppress an excessive temperature rise in correspondence with the elapsed time from the departure time of the first station, and is stored in the motor blower operation plan storage unit 66. is there.

  The motor blower control unit 64-1 measures the elapsed time since the departure from the first station, refers to the motor blower on / off operation plan held in the motor blower operation plan storage unit 66, and the current time is the blower on operation period. And whether the motor blower 61 belongs to the off operation period or not, and the on / off operation of the motor blower 61 is controlled based on this judgment.

  In the case of train operation, abnormalities such as accidents and breakdowns are rare, and normal operation is the majority. In normal operation, it is almost fixed at which point on the service route the vehicle accelerates, decelerates at which point, and at which point the vehicle travels at a constant speed at what speed. Therefore, as in this embodiment, the drive motor 13 is also cooled by controlling the on / off operation of the motor blower 61 in accordance with the blower on / off operation plan corresponding to the elapsed time from the departure time of the first station. Although the temperature rise is suppressed, when the actual temperature of the drive motor 13 does not rise to exceed the reference temperature, the motor blower 61 can be turned off to suppress noise generated by the blower operation.

  In the above embodiment, the motor blower 61 is controlled to be turned on / off in accordance with the motor blower on / off operation plan corresponding to the elapsed time from the time of departure of the vehicle at the first station. The elapsed time from the vehicle and the traveling point correspond to each other almost one-to-one if the timetable is normal. Therefore, the motor blower operation plan storage unit 66 holds the motor blower on / off operation plan corresponding to the travel point, and the motor blower control unit 64-1 takes in the travel point information and corresponds to the travel point. It is also possible to determine whether the current point is an on operation section or an off section with reference to the blower on / off operation plan, and to control the motor blower 61 on / off based on this determination.

  (Fourth Embodiment) A main circuit cooling apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. In the main circuit cooling apparatus according to the present embodiment, the configuration of the main circuit is the same as that of the first embodiment. Therefore, in FIG. 4, the same reference numerals are given to the components common to FIG. is there. In the case of the present embodiment, the cooling control of the power conversion device 12 is characterized, and a blower (BRB) 51 for conversion device that blows air to cool the power conversion device 12 is near the power conversion device 12. Is installed.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the converter blower 51, a current / voltage detector that detects the current Ic input to the power converter 12 and the applied voltage Vc. 52, a converter temperature calculation unit 53 that calculates the temperature Tcet of the power converter 12 based on the input current Ic and voltage Vc of the power converter detected by the current / voltage detector 52, and the converter temperature calculator 53. The conversion device estimated temperature Tcet calculated by 53 is compared with a preset ON / OFF reference temperature Tcrf of the conversion device blower 51, and the conversion device blower control unit 54 performs on / off operation control of the conversion device blower 51. It has.

  In the main circuit cooling apparatus of the above embodiment, the converter blower 51 is on / off controlled for cooling the power converter 12 as follows. The temperature rise of the power converter 12 can also be calculated by a function of the current Ic and the voltage Vc flowing through it. For example, with respect to the converter estimated temperature Tcet, Tcet = fc (Ic, Vc), where fc is a function. Therefore, the converter temperature calculator 53 calculates the converter estimated temperature Tcet based on the input current Ic and the voltage Vc detected by the converter current / voltage detector 52, and uses the calculated converter estimated temperature Tcet for the converter. Output to the blower control unit 54. The converter blower control unit 54 compares the converter estimated temperature Tcet with a preset blower on / off reference temperature Tcrf. When the converter estimated temperature Tcet exceeds the reference temperature Tcrf, the converter blower 51 is converted. Is turned on, and the converter blower 51 is turned off when the estimated temperature Tcet falls below the reference temperature Tcrf.

  Thus, according to the main circuit cooling device of the present embodiment, when it is estimated that a large current flows through power converter 12 and that the temperature rise rises above reference temperature Tcrf, converter blower 51 Is turned on to cool the power conversion device 12 to suppress the temperature rise, but it is estimated that the current flowing through the power conversion device 12 is small and the temperature rise does not rise so as to exceed the reference temperature Tcrf. In this case, the noise generated by the blower operation can be suppressed by turning off the converter blower (BRB) 51.

  (Fifth Embodiment) A main circuit cooling apparatus according to a fifth embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the converter blower 51, the converter temperature sensor 55 that detects the actual temperature Tcr1 of the power converter 12, and the converter temperature A conversion device blower control unit 54 that controls the on / off operation of the conversion device blower 51 by comparing the actual temperature Tcrl of the power conversion device 12 detected by the sensor 55 with a preset blower on / off reference temperature Tcrf. I have.

  In the main circuit cooling apparatus of the above embodiment, the converter blower 51 is on / off controlled for cooling the power converter 12 as follows. The converter temperature sensor 55 detects the actual temperature Tcr1 of the power converter 12 and outputs it to the converter blower controller 54. The converter blower control unit 54 compares the actual temperature Tcrl of the power converter 12 with a preset blower on / off reference temperature Tcrf, and the actual temperature Tcrl of the power converter 12 exceeds the reference temperature Tcrf. Sometimes, the converter blower 51 is turned on, and when the converter actual temperature Tcrl becomes equal to or lower than the reference temperature Tcrf, the converter blower 51 is turned off.

  As a result, according to the main circuit cooling device of the present embodiment, when the converter actual temperature Tcr1 rises until a large current flows through the power converter 12 or exceeds the reference temperature due to other reasons, the converter blower 51 is turned on to cool the power converter 12 to suppress the temperature rise, but when the actual temperature of the power converter 12 does not rise to exceed the reference temperature, the converter blower 51 is turned off. Thus, noise generated by blower operation can be suppressed.

  (Sixth Embodiment) A main circuit cooling apparatus according to a sixth embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the converter blower (BRB) 51, the timing at which the converter blower 51 is turned on corresponding to the operation plan of the vehicle, off The conversion device blower operation plan storage unit 56 that holds the timing of the conversion device as a blower on / off operation plan for the conversion device, and the elapsed time from the starting station of the vehicle are monitored and stored in the conversion device blower operation plan storage unit 56. The conversion device blower control unit that determines whether the blower on operation period or the off operation period is in reference to the conversion device blower on / off operation plan, and controls the on / off operation of the conversion device blower 51 based on this determination. 54-1 is provided.

  In the main circuit cooling apparatus of the above embodiment, the converter blower 51 is on / off controlled for cooling the power converter 12 as follows. The converter blower operation plan storage unit 56 sets the on period and the off period of the converter blower 51 corresponding to the elapsed time from the departure time of the starting station on the route of the vehicle. The plan is held in advance. Since the vehicle is operated according to a predetermined diagram, the current flowing through the power conversion device 12 is small because a large current flows at any point and the temperature of the power conversion device 12 increases sharply, or at a point where the vehicle runs at a constant speed. It is empirically known that the temperature rise is small. Therefore, a conversion device blower on / off operation plan suitable for effectively suppressing an excessive temperature rise in correspondence with the elapsed time from the departure time of the first station is created, and the conversion device blower operation plan storage unit 56 is created. Is held.

  The converter blower control unit 54-1 measures the elapsed time since the departure from the first station, and refers to the converter blower on / off operation plan held in the converter blower operation plan storage unit 56. Then, it is determined whether the current time point belongs to the blower on operation period or the off operation period, and the on / off operation of the converter blower 51 is controlled based on this determination.

  According to the present embodiment, power conversion is performed by controlling on / off operation of the converter blower 51 in accordance with the on / off operation plan of the converter blower corresponding to the elapsed time from the departure time of the first station. The apparatus 12 is cooled to suppress the temperature rise, but when the actual temperature of the power converter 12 does not rise so as to exceed the reference temperature, the converter blower 51 is turned off to generate noise generated by the blower operation. Can be suppressed.

  In the above embodiment, the conversion device blower 51 is controlled to be turned on / off in accordance with the conversion device blower on / off operation plan corresponding to the elapsed time from the departure time of the starting station of the vehicle. The conversion device blower on / off operation plan corresponding to the travel point is held in the conversion device blower operation plan storage unit 56, and the conversion device blower control unit 54-1 takes in the travel point information and stores the travel point information in the travel point. With reference to the corresponding converter blower on / off operation plan, it is determined whether the current point is the on operation section or the off section, and on the basis of this determination, the converter blower 51 is on / off controlled. It can also be configured.

  (Seventh Embodiment) A main circuit cooling apparatus according to a seventh embodiment of the present invention will be described with reference to FIG. In the main circuit cooling apparatus of the present embodiment, the configuration of the main circuit is the same as that of the first embodiment. Therefore, in FIG. 7, the same reference numerals are given to the same components as those in FIG. is there. In this embodiment, the cooling control of the transformer 11 is characterized. A transformer blower (BRC) 41 for blowing air to cool the transformer 11 is installed near the transformer 11. Yes.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the transformer blower 41, a current / voltage detector 42 for detecting the current It and the voltage Vt flowing through the transformer 11, and the current / voltage Based on the transformer current It and voltage Vt detected by the detector 42, the transformer temperature calculation unit 43 that calculates the temperature Ttet of the transformer 11, and the estimated transformer temperature Ttet calculated by the transformer temperature calculation unit 43 A transformer blower control unit 44 that controls the on / off operation of the transformer blower 41 in comparison with a preset on / off reference temperature Ttrf of the transformer blower 41 is provided.

  In the main circuit cooling apparatus of the above embodiment, the transformer blower 41 is controlled to be turned on / off for cooling the transformer 11 as follows. The temperature rise of the transformer 11 can also be calculated by a function of the current It and the voltage Vt flowing through it. For example, for the estimated transformer temperature Ttet, Ttet = ft (It, Vt), where ft is a function. Therefore, the transformer temperature calculation unit 43 calculates the estimated transformer temperature Ttet based on the current It and the voltage Vt detected by the transformer current / voltage detector 42, and uses the calculated transformer estimated temperature Ttet for blower control for the transformer. To the unit 44. The transformer blower control unit 44 compares the estimated transformer temperature Ttet with a preset blower on / off reference temperature Ttrf, and turns on the transformer blower 41 when the estimated transformer temperature Ttet exceeds the reference temperature Ttrf. The transformer blower 41 is turned off when the estimated temperature Ttet is lower than the reference temperature Ttrf.

  As a result, according to the main circuit cooling device of the present embodiment, when it is estimated that a large current flows through the transformer 11 and the temperature rise rises above the reference temperature Ttrf, the transformer blower 41 is turned on. When the transformer 11 is operated and the temperature rise is suppressed by suppressing the temperature rise, it is estimated that the current flowing through the transformer 11 is small and the temperature rise is not expected to rise to exceed the reference temperature Ttrf. The blower (BRC) 41 can be turned off to suppress noise generated by the blower operation.

  (Eighth Embodiment) A main circuit cooling apparatus according to an eighth embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling apparatus of the present embodiment, in order to control the on / off operation of the transformer blower 41, the transformer temperature sensor 45 that detects the actual temperature Ttrl of the transformer 11, and the transformer temperature sensor 45 The transformer blower control unit 44 that compares the actual temperature Ttrl of the detected transformer 11 with a preset blower on / off reference temperature Ttrf and controls on / off operation of the transformer blower 41 is provided.

  In the main circuit cooling apparatus of the above embodiment, the transformer blower 41 is controlled to be turned on / off for cooling the transformer 11 as follows. The transformer temperature sensor 45 detects the actual temperature Ttrl of the transformer 11 and outputs it to the transformer blower control unit 44. The transformer blower control unit 44 compares the actual temperature Ttrl of the transformer 11 with a preset blower on / off reference temperature Ttrf, and when the actual temperature Ttrl of the transformer 11 exceeds the reference temperature Ttrf, The blower 41 is turned on, and the transformer blower 41 is turned off when the transformer actual temperature Ttcrl becomes equal to or lower than the reference temperature Ttrf.

  As a result, according to the main circuit cooling apparatus of the present embodiment, when the transformer actual temperature Ttrl rises until a large current flows through the transformer 11 or exceeds the reference temperature due to other reasons, the transformer blower 41 is Turns on and cools the transformer 11 to suppress the temperature rise. If the actual temperature of the transformer 11 is not so high as to exceed the reference temperature, the transformer blower 41 is turned off and generated by the blower operation. Noise can be suppressed.

  (Ninth Embodiment) A main circuit cooling apparatus according to a ninth embodiment of the present invention will be described with reference to FIG. The main circuit configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and common constituent elements will be described using common reference numerals.

  In the main circuit cooling device of the present embodiment, in order to control the on / off operation of the transformer blower (BRC) 41, the transformer blower 41 is turned on and turned off in accordance with the vehicle operation plan. Is stored as a transformer blower on / off operation plan, and the transformer blower on plan storage unit 46 monitors the elapsed time from the starting station of the vehicle and is stored in the transformer blower operation plan storage unit 46. A transformer blower control unit 44-1 is provided to determine whether the blower on operation period or the off operation period is referred to with reference to the / off operation plan, and to control the on / off operation of the transformer blower 41 based on this determination.

  In the main circuit cooling apparatus of the above embodiment, the transformer blower 41 is controlled to be turned on / off for cooling the transformer 11 as follows. The transformer blower operation plan storage unit 46 stores in advance a transformer blower operation plan in which the ON period and the OFF period of the transformer blower 41 are set in accordance with the elapsed time from the departure time of the starting station on the operation route of the vehicle. It is held. Since the vehicle is operated in accordance with a predetermined diagram, at which point a large current flows and the temperature of the transformer 11 increases rapidly, or at which point the vehicle runs at a constant speed, so the current flowing through the transformer 11 is small and the temperature Experience shows that the rise is small. Therefore, an appropriate transformer blower on / off operation plan is created in order to effectively suppress an excessive temperature rise in correspondence with the elapsed time from the departure of the first station, and is stored in the transformer blower operation plan storage unit 46. I'm allowed.

  The transformer blower control unit 44-1 measures the elapsed time since the departure from the first station, refers to the transformer blower on / off operation plan held in the transformer blower operation plan storage unit 46, and Is in the blower-on operation period or the off-operation period, and on / off operation of the transformer blower 41 is controlled based on this determination.

  According to the present embodiment, the transformer 11 is controlled by performing on / off operation control of the transformer blower 41 in accordance with the transformer blower on / off operation plan corresponding to the elapsed time from the departure of the first station. Although the temperature rise is suppressed by cooling, when the actual temperature of the transformer 11 does not rise so as to exceed the reference temperature, the transformer blower 41 can be turned off to suppress the noise generated by the blower operation. .

  In the above embodiment, the transformer blower 41 is controlled to be turned on / off in accordance with the transformer blower on / off operation plan corresponding to the elapsed time from the departure time of the vehicle from the first departure station. The blower operation plan storage unit 46 holds a transformer blower on / off operation plan corresponding to the travel point, and the transformer blower control unit 44-1 takes in the travel point information and converts the transformer corresponding to the travel point. It is also possible to determine whether the current point is an on operation section or an off section with reference to the machine blower on / off operation plan, and to control the on / off operation of the transformer blower 41 based on this determination. .

The block diagram of the main circuit cooling device of the 1st Embodiment of this invention. The block diagram of the main circuit cooling device of the 2nd Embodiment of this invention. The block diagram of the main circuit cooling device of the 3rd Embodiment of this invention. The block diagram of the main circuit cooling device of the 4th Embodiment of this invention. The block diagram of the main circuit cooling device of the 5th Embodiment of this invention. The block diagram of the main circuit cooling device of the 6th Embodiment of this invention. The block diagram of the main circuit cooling device of the 7th Embodiment of this invention. The block diagram of the main circuit cooling device of the 8th Embodiment of this invention. The block diagram of the main circuit cooling device of the 9th Embodiment of this invention. The graph which shows the temperature change of a drive motor in the period until a railway vehicle transfers to constant speed driving | running | working from the departure station.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Transformer 12 Power converter 13 Drive motor 41 Transformer blower 42 Current / voltage detector 43 Transformer temperature calculation part 44,44-1 Transformer blower control part 45 Transformer temperature sensor 46 Transformer blower operation plan memory part 51 Converter blower 52 Current / voltage detector 53 Power converter temperature calculator 54, 54-1 Converter blower controller 55 Power converter temperature sensor 56 Converter blower operation plan storage 61 Motor blower 62 Current / voltage Detector 63 Motor temperature calculation unit 64, 64-1 Motor blower control unit 65 Motor temperature sensor 66 Motor blower operation plan storage unit

Claims (12)

A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A motor blower for cooling the drive motor;
Current / voltage detection means for detecting current / voltage with respect to the drive motor;
Motor temperature calculation means for calculating the temperature of the drive motor based on the motor current / voltage detected by the current / voltage detection means;
A main circuit cooling device comprising: motor blower control means for controlling on / off operation of the motor blower based on the temperature of the drive motor calculated by the motor temperature calculation means. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A motor blower for cooling the drive motor;
Motor temperature detecting means for detecting the temperature of the drive motor;
A main circuit cooling device comprising: motor blower control means for controlling on / off operation of the motor blower based on the temperature of the drive motor detected by the motor temperature detection means. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A motor blower for cooling the drive motor;
Motor blower operation plan holding means for holding a timing for turning on the motor blower corresponding to the operation plan of the vehicle, and a timing for turning it off as a motor blower on / off operation plan;
A main circuit cooling apparatus comprising: motor blower control means for monitoring an operation state of the vehicle and controlling on / off operation of the motor blower with reference to the motor blower on / off operation plan.   The main motor blower on / off operation plan according to claim 3, wherein the motor blower on / off operation plan defines an on period and an off period of the motor blower corresponding to an elapsed time from the start of operation of the vehicle. Circuit cooling device. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A power converter blower for cooling the power converter;
Current / voltage detection means for detecting current / voltage with respect to the power converter;
Power converter temperature calculation means for calculating the temperature of the power converter based on the current / voltage detected by the current / voltage detector;
A main circuit cooling apparatus comprising: a power converter blower control unit that controls on / off operation of the power converter blower based on the temperature of the power converter calculated by the power converter temperature calculation unit. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A power converter blower for cooling the power converter;
Power converter temperature detection means for detecting the temperature of the power converter;
A main circuit cooling device comprising: a power converter blower control unit that controls on / off operation of the power converter blower based on the temperature of the power converter detected by the power converter temperature detection unit. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A power converter blower for cooling the power converter;
A power converter blower operation plan holding means for holding a power converter blower on / off timing as a power converter blower on / off operation plan in correspondence with the vehicle operation plan;
A main circuit comprising: a power converter blower control unit that monitors an operation state of the vehicle and controls on / off operation of the power converter blower with reference to the power converter blower on / off operation plan. Cooling system.   The power converter blower on / off operation plan defines an on period and an off period of the power converter blower corresponding to an elapsed time from the start of operation of the vehicle. Item 8. The main circuit cooling device according to Item 7. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A transformer blower for cooling the transformer;
Current / voltage detection means for detecting current / voltage to the transformer;
Transformer temperature calculation means for calculating the temperature of the transformer based on the current / voltage detected by the current / voltage detection means;
A main circuit cooling device comprising: a transformer blower control means for controlling on / off operation of the transformer blower based on the temperature of the transformer calculated by the transformer temperature calculation means. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A transformer blower for cooling the transformer;
Transformer temperature detecting means for detecting the temperature of the transformer;
A main circuit cooling device comprising: a transformer blower control means for controlling on / off operation of the transformer blower based on the temperature of the transformer detected by the transformer temperature detection means. A transformer for transforming AC overhead line voltage into a vehicle, a power converter that converts power to the transformer output of the transformer, and a drive motor driven by the converted power of the power converter Main circuit,
A transformer blower for cooling the transformer;
A transformer blower operation plan holding means for holding a timing for turning on the transformer blower corresponding to the operation plan of the vehicle, and a timing for turning it off as a transformer blower on / off operation plan;
A main circuit cooling apparatus comprising: a transformer blower control unit that monitors an operation state of the vehicle and controls on / off operation of the transformer blower with reference to the transformer blower on / off operation plan.   12. The transformer blower on / off operation plan defines an on period and an off period of the transformer blower corresponding to an elapsed time from the start of operation of the vehicle. Main circuit cooling device.

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