JP2001136603A - Rolling stock for regenerating and reusing energy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling stock which uses effectively braking energy that is radiated as heat, and reduces noise and exhaust gas in a railroad depot yard and city district around the railroad depot. SOLUTION: In a rolling stock linked with a motive power unit, AC machines 3a, 3b are connected with wheel shaft 2a, 2b from a battery 10 through a line breaker 6, a filter reactor 7 and an inverter 4. As generators, the AC machines 3a, 3b store braking energy in the battery 10, in the case of deceleration and in the case of speed suppression. Mainly in the case of low speed running, the AC machines act as motors, which drive the wheel shafts 2a, 2b with electric power of the battery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway vehicle that converts braking energy into electric energy during deceleration and deceleration traveling and stores it in a storage battery, and starts and drives at low speed with the stored power.

[0002]

2. Description of the Related Art In a railway line without overhead wiring facilities, FIG.
As shown in (a), a reduction gear 17 mounted with a diesel engine 15 and connected to an axle via a fluid transmission 16
Is driving. During deceleration, friction braking (air brake device) using compressed air (not shown) is performed,
Most of the inertial energy of the vehicle is released as heat.

[0003] In Fig. 2A, two diesel engines 15 are mounted to drive the axles of the front and rear bogies 1 respectively. Reference numeral 18 denotes a fuel tank.
On the other hand, an electric vehicle to which electric power is supplied from an overhead wire is generally braked by an air brake at the time of deceleration in the same manner as described above, but there is also a vehicle in which braking energy is regenerated.

As shown in FIG. 2 (b), an AC machine 21 is connected to each axle, electric power is taken in from an overhead line via a pantograph, and a disconnector 24, a filter reactor 23
The inverter 21 is connected to an AC machine 21 via an inverter 22. During deceleration, the AC machine 21 is used as a generator to convert braking energy into electric energy.

However, there are cases where this regenerative energy cannot be used in other knitting, and at this time, the regenerative energy has expired. In this case, the regenerative energy is released as heat by a resistor or friction braking.

[0006]

In recent years, interest in the global environment has increased, and research has been promoted to reduce the amount of exhaust gas by reducing fuel consumption of the engine and to reduce noise. Some have been put to practical use.

[0007] In the case of railway vehicles, looking at the vehicle operation data,
Although there is a difference depending on the route, in the case of operation at each station stop, the braking distance is 10 to 20% of the total length of the route, and the coasting distance is 2% of the total length.
There is about 0 to 50%. Most of these are released as heat as described above, and there is a demand to recover and use this wasted energy.

Further, vehicles equipped with a diesel engine emit a large amount of exhaust gas before and after a station in a station yard or in an urban area, and generate a large amount of noise. Therefore, there is a demand to reduce this. Therefore, it is conceivable to adopt a hybrid system proposed for automobiles. However, railway vehicles are characterized by longer start / stop intervals and longer high-speed driving times than automobiles, and in particular, have a large body mass. Therefore, the braking energy at the time of high-speed running is enormous, and if the energy is to be recovered by regenerative braking, the capacity of the storage battery must be extremely large. However, the space for mounting the storage battery and the weight of the vehicle are limited, and it is difficult to obtain a hybrid system with sufficient performance.

The present invention has been developed under such a background, and makes effective use of the braking energy released as heat as much as possible while reducing noise and exhaust gas in the station premises and in the urban area around the station. It is intended to provide a railway vehicle.

[0010]

The present invention employs the following means to achieve the above object. That is, a railway vehicle connected to a motor vehicle, an AC machine is connected to the axle from a storage battery via a current breaker, a filter reactor, and an inverter,
The AC machine is characterized in that braking energy is stored in a storage battery as a generator during deceleration and deceleration, and the axle is driven by electric power of the storage battery mainly as an electric motor during low-speed running.

This vehicle is equipped with a braking device, but is not equipped with a power source such as a diesel engine or the like, and is not supplied with power from the outside by a pantograph or the like. It runs in combination. Then, the energy at the time of braking or deceleration is converted into electric energy, collected, stored, and used at the time of starting and running at low speed.

[0012] Since a railway vehicle is operated by connecting a plurality of vehicles, it is necessary to drive the train in consideration of the balance of the whole train. The vehicle of the present invention performs recovery and storage of braking energy to share starting and low-speed running, and to share medium and high-speed running to other trained power vehicles.

The method of knitting may be appropriately selected according to the route. For example, knitting may be performed with two powered vehicles and one vehicle of the present invention, or may be formed with one powered vehicle and two vehicles of the present invention. The powered vehicle may be either a diesel vehicle equipped with a diesel engine or an electric vehicle that receives power from an overhead line.

In a general operation of a train to which this vehicle is connected, when starting from a stop, the axle of this vehicle is driven by the power of the storage battery and runs until a predetermined speed is reached. At this time, the axle of the connected power vehicle is not driven. When the vehicle reaches a predetermined speed, the driving of the AC machine of the vehicle is stopped, and the vehicle runs by driving the axle of the motor vehicle. Alternatively, the AC machine and the motor vehicle are operated together in the specific speed range.

[0015] The predetermined speed may be, for example, a running speed when the rotation speed of the diesel engine is in an efficient range when the powered vehicle is a diesel vehicle. When traveling in the constant speed traveling area, for example, when the deceleration traveling area near the stop station is reached, stop driving the axle of the power vehicle, electrically connect the AC machine of this vehicle to the axle, and act as a regenerative brake ,
The electricity is collected in the storage battery. Then, this electric power is used as power for starting from the next stop station.

[0016] Normally, railroad vehicles have an operation standard determined for each route and travel in accordance with the standard. Therefore, since the power required at that time can be obtained in advance as data, the driving by the motor vehicle, the driving by the AC machine and the combination of the two, and the control of the charge and discharge of the storage battery are best performed by simulation according to the route. What is necessary is just to perform efficient operation control.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a schematic diagram illustrating a drive system of a railway vehicle that regenerates and reuses energy, and FIG. 3 is a plan view illustrating an arrangement of each device.

Alternating machines 3a and 3b are connected to axles 2a and 2b of the bogie 1 of the railway car.
3b is connected from the storage battery 10 via the disconnector 6, the filter reactor 7, and the inverter 4. AC machine 3
A and 3b obtain electric power from the storage battery 10 and drive the axles 2a and 2b, but function as generators when the vehicle is braked or during deceleration operation, and charge the storage battery 10.

The inverter 4 converts the DC power of the storage battery 10 into AC and functions as AC motors 3a, 3b
When the AC machines 3a and 3b function as generators, the AC power is converted to DC and stored in the storage battery 10. The filter reactor 7 is a filter that mainly removes high frequencies, and the disconnector 6 is for cutting off direct current electricity.

The vehicle is stopped by an air brake system (not shown). 8 is a resistor and a storage battery 1
This is for releasing the electric power generated when 0 is the upper limit by resistance. The control device 9 controls the operation of the AC machines 3a and 3b as electric motors or as generators, and is connected to an operation control panel in a cab. Reference numeral 20 denotes a storage battery capacity detector which outputs a control signal when the lower limit and the upper limit are set.

In this vehicle, during power running, as shown by the solid line A, electric power is transmitted from the storage battery 10 to the inverter 4 via the disconnector 6 and the filter reactor 7, and is converted into AC and converted into AC. 3b. In this case, when the capacity of the storage battery 10 becomes the lower limit value, the disconnector 6 operates to stop the power supply from the storage battery 10.

On the other hand, during deceleration or deceleration traveling, as indicated by the dotted line B, the AC machines 3a and 3b function as generators,
The power is driven by the axles 2 a and 2 b to generate electric power, converted into direct current by the inverter 4 and stored in the storage battery 10. The vehicle configured as described above is connected to a powered vehicle, for example, a vehicle equipped with a diesel engine, and is travel-controlled by an operation controller provided in a driver's seat.

In this operation controller, the operation standard of the vehicle on the route is stored in advance, and the operation is controlled according to the instruction of the operation standard while detecting the current position.
The vehicle operation standards are data on the driving status of the vehicle from the first station to the last station, and the vehicle speed and required power at each position from the first station and the operation time such as starting, accelerating, decelerating, and stopping are stored. Have been.

The traveling control of a train set in which the vehicles of the present invention are connected on a general route is as follows. At the time of departure, the storage battery 10 is fully charged and the alternator 3a,
3b, and instructs the inverter 4 to make the rotation speed of the AC machines 3a, 3b a predetermined value in accordance with the operation standard, and gradually increases the speed to travel. At this time, the axle of the power vehicle is not driven because power is not transmitted.

During this traveling, the capacity detector 20 of the storage battery 10
Sends a signal indicating that the storage battery capacity is at the lower limit value, the disconnector 6 is operated to stop the supply from the storage battery 10, and the vehicle is driven by driving the axle of the motor vehicle. In the case of a stop signal or deceleration running, the regenerative brake is operated using the AC machines 3a and 3b as generators to charge the storage battery 10. In addition, when the signal indicating that the capacity of the storage battery 10 is the upper limit value is output from the capacity detector 20 of the storage battery 10 during the deceleration traveling, the charging of the storage battery 10 is stopped and the resistor 8
And discharge by resistance. Stopping braking in a low-speed range is performed by an air brake as in the related art.

In the running control of the train set described above, a control program can be created in advance based on the running reference of the line section. In this case, it is sufficient to minimize the required energy of the motor vehicle and minimize the discharge of the regenerative power by the resistor. Summarizing the above explanation,
The running control of the train set connected to the regenerating vehicle will be described with reference to the flowchart of FIG.

The driver performs a driving operation based on the traveling reference of the line section. In step 110, it is determined whether the vehicle is running or decelerating, and when a driving notch is input,
Proceeding to step 120, if the storage battery 10 is not at the lower limit, proceed to step 130. If the operation notch is in the low speed range, the AC machines 3a and 3b are driven (step 14).
0) Run. In this case, the axle of the connected powered vehicle is not driven, but if it is determined that the acceleration is insufficient (step 150), the powered vehicle is also driven and operated in combination (step 160).

Then, in the low-speed running by the storage battery 10, when the detection information indicating that the capacity of the storage battery 10 is the lower limit is input (step 120), the power to the AC machines 3a and 3b is turned off, and It is run only by driving. When the driver has operated the driving notch to the brake notch, the process proceeds from step 110 to step 200, in which the alternators 3a and 3b function as generators to decelerate, and the process proceeds to step 220, where the capacity of the storage battery 10 is at the upper limit. It judges whether or not there is.
The generated powers a and 3b are collected in the storage battery 10. Storage battery 1
When the capacity of 0 is the upper limit value, the circuit of the electric power generated by the AC machines 3a and 3b to the storage battery 10 is cut off and discharges to the resistor 8.

Although the braking energy of the motor vehicle is not described in the above embodiment, for example, when the motor vehicle is an electric vehicle provided with a regenerative brake, the regenerative energy of the electric vehicle is calculated according to the present invention. It is also possible to collect it in the storage battery of the vehicle. As described above, the present invention is not limited to such embodiments at all, and can be implemented in various modes without departing from the gist of the present invention.

[0030]

As described above, according to the present invention, an AC machine is connected to an axle from a storage battery via a disconnector, a filter reactor, and an inverter, and the AC machine is used as a generator during deceleration and deceleration. Storing braking energy in a storage battery,
Since the axle is driven mainly by the electric power of the storage battery during low-speed driving, the amount of braking energy recovered during deceleration can reliably save energy costs, and when connected to a diesel vehicle, fuel consumption is reduced. At the same time, noise and exhaust gas in the station premises and in the urban area around the station can be reduced. Further, when the vehicle is connected to an electric vehicle, the vehicle can be surely regenerated at the time of deceleration regardless of the overhead wire voltage.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a method for regenerating energy according to an embodiment of the present invention.
It is a schematic diagram showing a drive system of a railcar to be reused.

FIG. 2A is a schematic diagram illustrating a drive system of a vehicle equipped with a diesel engine, and FIG. 2B is a schematic diagram illustrating a drive system of an electric vehicle equipped with a regenerative brake.

FIG. 3 is a diagram illustrating energy regeneration and energy recovery according to an embodiment of the present invention.
It is a top view which shows arrangement | positioning of each apparatus of the railcar reused.

FIG. 4 is a flowchart showing a flow of traveling control.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Truck 2a, 2b ... Axle 3a, 3b ... AC machine 4 ... Inverter 5 ... Trans reactor 6 ... Disconnector 7 ... Filter reactor 8 ... Resistor 9 ... Control device 10 ... Storage battery 15 ... Diesel engine 16 ... Fluid transmission Reference numeral 20: battery capacity detector 21: AC machine 22: inverter 23: filter reactor 24: disconnector

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Eijiro Matsuoka 1-4-1 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Tokai Passenger Railway Co., Ltd. No. 1 In Japan Vehicle Manufacturing Co., Ltd. (72) Eiichi Suzuki Inventor Eiichi Suzuki 1-1 in Japan Vehicle Manufacturing Co., Ltd. (72) Inventor Tsuyoshi Morita Mihonmatsu-cho, Atsuta-ku, Nagoya City, Aichi Prefecture No. 1-1 F-term in Japan Vehicle Manufacturing Co., Ltd. (reference) 5H115 PA11 PC02 PG01 PI01 PI11 PI16 PI29 PO02 PU08 PU24 PU25 PV09 QE02 QE10 QI03 QI04 QN03 RB02 SE04 TI01

Claims (1)

[Claims] 1. A railway vehicle connected to a motor vehicle, wherein an axle is connected to an alternator from a storage battery via a disconnector, a filter reactor, and an inverter, and the alternator is configured to generate power during deceleration and deceleration. And store the braking energy in the storage battery as
A railway vehicle that regenerates and reuses energy, wherein an axle is driven by electric power of the storage battery mainly as an electric motor during low-speed traveling.