• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to traction drives of vehicles and provides an extension of the range of adjustment. The proposed drive uses a traction motor of independent excitation, in which, when the speed controller is turned off, a reverse torque is created to dynamically brake the vehicle. The effect in the proposed drive is achieved due to the possibility of regulating the excitation current of the traction motor as a function of the current of the core, providing a minimum signal of the excitation current when the current of the core is less than the reference current, thereby providing the excitation current and torque of the traction motor. 2 Il. § ABOUT)
    公开号:SU1454243A3
    申请号:SU782569951
    申请日:1978-01-25
    公开日:1989-01-23
    发明作者:Леонард Гарднер Алвин；Джей Турлей Барри
    申请人:Дженерал Электрик Компани (Фирма)；
    IPC主号:
    专利说明:


    GO
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    The invention relates to devices for controlling the operation of a vehicle with electric motors, in particular for control systems that provide dynamic braking.
    The purpose of the invention is the separation of the regulation range.
    Fig. 1 is a functional block diagram of a vehicle traction drive; Fig. 2 is a schematic diagram of a control unit for a power generator,
    The device contains a beef DC motor with a winding 1 and a winding 2 independent excitation. Winding 1 box through braking resistor 3, shunted diode 4, is connected to power supply unit 5, the power generator 6 of which is connected to drive motor 7. Excitation winding 2 is connected to exciter 8 with excitation winding 9, the power supply of which includes resistors 10 and 11, the excitation winding 9 is connected to the output of the excitation winding current regulator 12, the exciter, whose input is connected to the output of the adder 13 connected to the output of the exciter current 14, to the output of the current sensor 15 in the winding of an independent excitation and through the converter 16, and output control unit 17, braking, whose input is connected through inverter 18 to the current sensor 19, the anchor coil 1,
    The power supply unit 5 comprises a power generator 6 with an excitation winding 20 and its control unit, which is arranged on emitter followers connected in parallel to each other and containing transistors 21.1, 21.2-21.N diodes 22.1, 22.2-22 , N, resistors 23.1, 23.2-23, N, 24.1, 24.2-24, N, amplifiers 25, Zener diode 26, resistors 27-32, diodes 33-35, switch 36 and battery battery 37
    The level of excitation winding 9 excitation of the exciter corresponds to the speed of rotation of the core 8, Excitation of the winding 9 is insulated with regulator 12, which is a pulse width modulator. One end of the winding 9 is connected to the regulator 11, and the second is connected to the connection point of resistors 10 and 11, which are installed
    0 5 0
    Q j
    0
    five
    between the terminals and the neutral of the voltage source, thereby forming a voltage divider that shifts the second terminal of the excitation winding 9 to a positive voltage. The task of bias is to provide reverse excitation for the winding 9, due to which faster shutdown occurs. The signal produced at the output of the adder 13 is an error signal between the reference signal and the current signal of the excitation winding 2. Such an error signal is applied to the excitation current regulator 12 of the winding 9, which regulates the current of this winding in such a way as to minimize the error signal
    No.1 the minimum level of the motor current is a factor of design choice and may depend on the type of vehicle. In some cases, 1ddc can be set at zero current of the core, so that the excitation current of the engine reaches the minimum level when reverse current of the core is observed.
    Resistor 3 provides a reverse current between core t and power supply unit 5. It is desirable to choose the value of this resistance as much as possible to limit the maximum of the generated current within the driving motor, it can be approximately 1 Ohm. When the drive motor regulator 7 is turned off, it will slow down, the voltage on the clamp of power supply unit 5 will decrease at a rate much greater than the voltage or counter-electromotive force of core 1, taking into account that during the release of the pedal protivodvizhuscha force and speed of the armature 1 is substantially equal to voltage on the power unit 5. The reduction in power coming from block 5 to measles 1 results in a decrease in the power of the traction motor. In this device, in which the engine is part of the vehicle's movement systems, a decrease in the power output of the traction motor results in a slowdown of the machine. However, the moment of inertia of the vehicle causes it to continue moving, so that the connection between the wheels of the car and the traction motor.
    ten
    15
    20 excitation allows the stress of the core to rise in conditions when there is no load. However, with a load, the residual magnetic field may not be sufficient to increase the current. Upon initial start-up, the closure of the switch 36 pulls the excitation to the winding 20, ensuring the start of the generator 6. When the voltage is enough to self-excite the generator, the switch 36 is opened and the battery 37 is disconnected from the winding 20.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    20
    25
    causes the measles 1 engine to continue rotating.
    When the voltage of block 5 is less than the counter electromotive force ko-1 p 1, the current through resistor 3 changes its direction. Such a reverse current is generated by core 1, since the latter rotates and the excitation winding 2 continues to be excited by the minimum level of current generated by the braking control unit. Resistor 3 serves to limit the amount of current and provides a drop in energy or load to absorb recovered energy. Thus, in this mode, the torque of the engine, which causes dynamic braking of the vehicle, is provided. when a slowdown occurs due to a decrease in the voltage of the power supply unit 5.
    The generator with windings 6 and 19 of block 5 is a self-excited high power generator.
    The emitter-follower circuits are connected in parallel to resistor 32, whereby this resistor can be partially or completely bridged under certain operating conditions, which are determined by the nominal voltage of a Xener diode 26, which is connected in parallel with resistor 29, which in combination with a series-connected resistor 28 forms a voltage divider circuit that provides the voltage on the anode of the diode 26 as a function of the voltage of the core 6, and the resistors 29 and 28 are connected in series with the core 6.
    Amplifier 25 provides operating current to the emitter follower transistors, the number of which depends on the individual characteristics of each transistor and the magnitude of the current supplied to the excitation winding 20. The emitter follower circuit acts as a shunt for resistor 32. Since both - - ––––– ““ 1.j ““… ..14 1 SLS C1 1 and D M
    excitation coil 20 leaves induc-g applied to resistors, diodes, an emittive load, diode 34 is connected to ternary repeaters connected in parallel with winding 20 to provide free current flow in case of transient voltages or unexpected opening of the generator circuit, Diode 35 protects the transistor circuit from transient reverse voltages.
    At the initial start of the generator 6, the residual magnet in the winding
    thirty
    35
    40
    45
    Traction drive of a vehicle containing a direct current motor of independent excitation, the winding of the core of which is connected via a braking resistor, shunted by a diode, to the power generator with its control unit connected to the drive motor, and the excitation winding of the traction motor to the exciter , the current sensors in the cortex of the electric motor and its excitation windings, and the excitation winding of the piqc generator is connected to one of the terminals of one of the batteries The battery is characterized by the fact that, in order to expand its control range, it is equipped with a connected input to the output of the current sensor, a control unit, an adder, a regulator of the exciter excitation winding, and resistors in the power supply circuit of this winding, while the current regulator input The excitation winding of the exciter is connected to the output of the adder, the first input of which is connected to the output of the setpoint of the excitation current, the second to the output of the current sensor in the winding of the independent excitation, and the third to the output of the braking control unit, the control unit of the power generator
    55
    parallel to each other, a transistor current amplifier and a Zener diode, which through the first resistor is connected to one of its electrodes to the base of the transistor current amplifier, and the other electrode to one of the windings of the core of the power supply generator, the other output of which is connected to 1454243
    20 excitation allows the stress of the core to rise in conditions when there is no load. However, with a load, the residual magnetic field may not be sufficient to increase the current. Upon initial start-up, the closure of the switch 36 brings up the excitation to the winding 20, ensuring the start of the generator 6. When the voltage is enough to self-excite the generator, the switch 36 is opened and the battery 37 is disconnected from the winding 20.
    Invention Formula
    0
    five
    - --D- ----- - «" 1.j «« «..14 1 SLS C1 1 and D M
    performed on resistors, diodes, emitter followers, connected
    0
    five
    0
    five
    Traction drive of a vehicle containing a direct current motor of independent excitation, the winding of the core of which is connected via a braking resistor, shunted by a diode, to the power generator with its control unit connected to the drive motor, and the excitation winding of the traction motor to the exciter , the current sensors in the cortex of the electric motor and its excitation windings, and the excitation winding of the piqc generator is connected to one of the terminals of one of the batteries battery, characterized in that, in order to expand the range of its regulation, it is provided with a connected input to the output of the current sensor, a control unit, an adder, a regulator of the exciter excitation winding, and resistors in the power supply circuit of this winding, while the input of the current regulator The excitation winding of the exciter is connected to the output of the adder, the first input of which is connected to the output of the setpoint of the excitation current, the second to the output of the current sensor in the winding of the independent excitation, and the third to the output of the braking control unit with the power generator control unit
    g is executed on resistors, diodes, emitters, connected to
    55
    parallel to each other, a transistor current amplifier and a Zener diode, which through the first resistor is connected to one of its electrodes to the base of the transistor current amplifier, and the other electrode to one of the winding terminals of the power supply generator, the other output of which is connected to the editor A. Motch
    and & g
    Tehred A. Kravchuk
    Proofreader V. But ha
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    同族专利:
    公开号 | 公开日
    DE2751074A1|1978-07-27|
    AU508111B2|1980-03-06|
    AU3226878A|1979-07-19|
    JPS53104922A|1978-09-12|
    JPS626401B2|1987-02-10|
    DE2751074C2|1987-02-26|
    US4103211A|1978-07-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1763166A1|1967-04-17|1971-09-02|Bbc Brown Boveri & Cie|Diesel-electric traction system, especially for tram vehicles, and arrangement for its execution|
    US3651388A|1970-04-17|1972-03-21|Chesapeake & Ohio Railway|Dynamic braking control system for plural traction motors|
    US3728599A|1971-07-30|1973-04-17|Toyo Kogyo Co|Control system for an electric automotive vehicle|
    FR2278522B1|1974-03-07|1978-07-07|Peugeot & Renault|US4388569A|1981-09-24|1983-06-14|Shipaev Gennady A|System for automatic control of dynamic braking of independent transport facility|
    US4568996A|1983-10-11|1986-02-04|General Electric Company|Protective circuit for a separately excited d-c motor|
    US4495449A|1983-12-02|1985-01-22|General Electric Company|Electric propulsion system for traction vehicles with automatic retard speed regulation|
    US5051670A|1990-07-30|1991-09-24|Aircraft Parts Corp.|Aircraft DC starter-generator torque controller|
    US5483615A|1994-06-17|1996-01-09|Hallidy; William M.|Direct current electrical motor system and method of using same|
    US6378636B1|2000-10-11|2002-04-30|Ford Global Technologies, Inc.|Method and system for providing for vehicle drivability feel after accelerator release in an electric or hybrid electric vehicle|
    US7293621B2|2002-04-10|2007-11-13|Charge-O-Matic Energy Recovery Devices, Llc|Vehicle drive system with energy recovery system and vehicle mounting same|
    WO2003087623A2|2002-04-10|2003-10-23|Charge-O-Matic Energy Recovery Devices, Llc|Vehicle drive system with energy recovery system|
    US20060085104A1|2004-10-18|2006-04-20|C.Q.S. Eelectrical Products Inc.|Speed controller of an electrical car|
    US7208894B1|2005-11-01|2007-04-24|Earle John L|Electric vehicle motor and control system with high efficiency regeneration|
    DE102007037690A1|2007-03-02|2008-09-04|Volk Fahrzeugbau Gmbh|Industrial truck, particularly hybrid-driver-seat-tractor, has driving current running in and electric main circuit and driving machine is formed as electric motor for driving running wheel|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/762,692|US4103211A|1977-01-26|1977-01-26|Dynamic drag arrangement for electrically propelled traction vehicles|
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