JPH04117106A - Current collector controller for levitation railway - Google Patents

Abstract

PURPOSE:To suppress noise by introducing a current collector upon simultaneous satisfaction of three conditions; voltage of a current collecting coil is in low speed area or stop area; speed is in the low speed area or stop area when wheels are running; a feeder rail detector provides a signal representing existence of feeder rail. CONSTITUTION:A current collector is introduced only when three conditions are satisfied simultaneously; voltage of a current collecting coil is in a low speed area or a stop area; a magnetic levitation vehicle runs on wheels with a speed in the low speed area or stop area; feeder rail exists. Power is then fed from a power source through the current collecting coil, the current collector, an AC-DC power converter and a DC-AC power converter to a load. If three conditions are not satisfied simultaneously, the current collector is stored and switching is made to feed power from the current collecting coil to the load. According to the constitution, air resistance due to an external protrusion, i.e., the current collector, is eliminated at the time of levitation running and rattling noise is eliminated at the time of high speed running.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an RL dual-use collector control device for a magnetic levitation railway.

(Prior Art) A magnetic levitation railway uses superconducting magnets or normal conducting magnets to levitate and propel a car body. The power source for the auxiliary power source for magnetic levitation trains is based on non-contact current collection using a dedicated induction current collection coil (hereinafter referred to as current collection coil) installed on the bogie of the vehicle. Then, the AC power input from the collector coil is converted to DC power by an AC-DC converter, and this DC power is further converted to AC power by the DC-AC converter, which is used as a power source for the compressor and air conditioner that are loads. .

However, in the case of the sidewall levitation system of magnetic levitation trains, the magnetic field generated by the levitation coil induces a voltage in the current collector coil on the train, so when the train is stopped or at low speed, the magnetic field from the levitation coil is not sufficiently generated and the voltage is collected. Sufficient power cannot be collected from the electric coil, and power is supplied to the contact type collector from the feeder rail or overhead wire of the ground equipment.

(Problem M to be solved by the invention) In the low speed range (predetermined speed range) and stop area of predetermined stopping points such as stations, a collector is used for power supply, but this collector is not used. If there is no control to move the vehicle in and out, it will create air resistance when driving, causing wind noise when driving at high speeds.

In addition, the current collector must be strong enough to withstand air resistance, and since it travels floating, it is desirable that it be as light as possible.

The present invention stores the collector when not in a low-speed range or stop area at a stopping point such as a station, eliminates air resistance due to the collector, and eliminates wind noise of the collector at high speeds, resulting in low noise. Furthermore, by retracting the vehicle, the strength of the current collector is reduced by reducing the effect of air resistance during high-speed driving, and the purpose is to reduce the weight of the current collector compared to before it is retracted.

[Structure of the invention]

(Means for Solving Problem 111) A block diagram of the present invention is shown in FIG. A voltage detector 2 that measures the voltage of the current collector coil 1 when running; a speed sensor 4 that detects the speed from the wheels 3 of the vehicle (although it is a floating railway, it does not float at low speeds but runs on wheels). A feeding rail detector 6 that checks the presence or absence of the feeding rail 5, and a current collector command device 8 that commands the insertion and removal of the current collector 7 based on these signals.
, collector loading/unloading device W9. for loading/unloading the collector. It consists of a current collecting coil and a current collecting switch 10 that switches the current collecting path from the current collector.

(Function) Magnetic levitation railway vehicles collect current in the low speed range or stop range at stations or predetermined stopping points, so the voltage of the current collector coil must be in the low speed range or stop range, and when the wheels are running When three conditions are simultaneously met: the speed detected by the speed sensor is in the low speed range or the stop range, and the feeder rail exists from the feeder rail detector signal, a command to issue the collector is sent to the collector loading/unloading device. The work of taking out the collector is done.

Conversely, the collector is stored unless even one of the three conditions described above is met.

(Embodiment) A block diagram of the present invention is shown in FIG. A voltage detector 2 that measures the voltage of the current collecting coil 1 that collects current during running. A speed sensor 4 detects the speed from the vehicle's axle 3 (it is a floating railway, but at low speeds it does not float and runs on the axle), and switches the current collection route when it comes to an emergency stop in a place where there is no power feeding rail 5. a feeder rail detector 6 for checking the presence or absence of the feeder rail 5, a current collector command device 8 for instructing the insertion and removal of the collector 7 based on these signals, and a current collector command device 8 for instructing the insertion and removal of the collector 7 in order to Collector loading/unloading device 9
．． A collector changeover switch 1o that switches between the collector coil and the current collection path from the collector, an AC-DC converter 11 that converts the collected AC power to DC power, and a DC power supply that stabilizes the DC power with a capacitor or battery, for example. It is composed of a stabilizer 12, a DC-AC converter 13 that converts a DC power source to an AC power source that is a power source for a load, and a load 14 such as a compressor or an air conditioner.

Magnetic levitation railway vehicles cannot cover the load of the vehicle (compressor and air conditioner power supply) with the power from the collector coil at low speeds or when stopped, so power is collected in a barrel that receives power from the feeder rail 5, which is ground equipment. electrons are required.

In order to eliminate air resistance during driving, this collector is retracted during normal driving and is only brought out when the vehicle is moving from a low speed range to a stop range, or from a stop range to a low speed range.

The conditions for the output of the collector are as follows.

■ In floating railways, the voltage collected from the collector coil varies depending on the speed of the vehicle, so the voltage of the collector coil must be in the low speed range or stop range.

■ The magnetic levitation vehicle runs on wheels and its speed is in the low speed range or in the stopped range.

■ If the vehicle is stopped in a place where there is no feeder rail, it will not be possible to supply power even if the collector is sent out. Therefore, the collector should not be sent out and the power used by the load may be gradually reduced, or the collector source may be replaced with an emergency one such as a battery. The existence of a feeder rail to enable the work of switching and supplying power to, etc.

Only when these three conditions are met at the same time, the current collector is turned on and the power supply source is changed from the current collector coil to the current collector, and from the collector to AC.
- Supplying power to the load via DC and DC-AC power converters.

The current collector will be stored unless the three conditions for outputting the current collector are met at the same time. and,
Switch to supply power from the current collector coil to the load.

By retracting the collector, the air resistance caused by the collector, which is an external protrusion of a magnetic levitation vehicle, is eliminated, and there is no wind noise when traveling at high speeds, resulting in low noise. Since the strength can be reduced compared to the previous collector installed externally, the material can be made lighter and the weight of the current collector can be reduced.

In the present invention, we considered laying ground salt rails or overhead wires at stations and predetermined emergency stop points, but if we lay them on the entire line, the presence of salt rails or overhead wires would be detected. This eliminates the need for a detector, and the storage of the current collector is controlled by the running speed of the vehicle and the electromotive force of the induction current collector coil. In addition, the train speed can be detected by a speed detector that uses the Doppler effect, or by wirelessly transmitting the train running speed measured on the ground side to the train, without depending on the rotation speed of the axle. is also possible.

〔Effect of the invention〕

By storing the collector, the air resistance caused by the collector when the magnetic levitation vehicle is running is eliminated, and wind noise at high speeds is also eliminated, resulting in low noise. Moreover, by storing the current collector, the strength level of the current collector can be reduced to a certain level before storing, so that the weight of the material can be reduced, and the current collector can be made lighter.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1. Current collector coil 2. Voltage detector 3. Vehicle wheels 4. Speed sensor 5. Salt rail 6
...Feeding rail detector 7...Collector 8...
・Electronic collector command device 9-Collector input/output device IO・・Todenshi changeover switch 11・・AC-DC converter 12・DC stabilizer load 13・・DC-AC converter [14...Load agent Patent attorney Noriyuki Noriyuki

Claims (1)

[Claims] In the auxiliary power supply system of magnetically levitated railway vehicles, non-contact current collection is carried out using coils dedicated to induction current collection (hereinafter referred to as current collection coils) while the vehicle is in motion. A voltage detector that measures the voltage of the current collecting coil that collects electricity from a current rail or an overhead line, etc., and performs non-contact current collection while running, and a voltage detector that measures the voltage of the current collecting coil that collects electricity while running. A speed sensor that detects the speed by rotation or non-contact (travels on wheels without floating), a feeder rail detector that checks the presence or absence of a feeder rail,
The floating railway consists of a current collector command device that commands the loading and unloading of the current collector based on these signals, a current collector coil that takes out and takes out the current collector, and a current collection switch that switches the current collection path from the current collector. collector control device.