• 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 electrical engineering. The purpose of the invention is to increase the uniformity of rotation both at start-up and at low speeds by reducing pulsations. rotational momentum and noise at a dc source. This goal is achieved by introducing into the AC drive a capacitor 9 connected between the common points of connection of the thyristor 7.8 and inverters 2.3. Through inverters 2, 3, chokes 4, 5, the main windings of the synchronous motor 1 are connected to a power source 6 o The power source 6 is shunted by a diode 10. As a result, torque pulsations are excluded. the current is compensated between the motor windings 1. The thyristors 7.8 are switched during the idle phase, therefore interference from the power supply source 2 or more is excluded. § ABOUT)
    公开号:SU1421271A3
    申请号:SU833641524
    申请日:1983-09-15
    公开日:1988-08-30
    发明作者:Вьяр Альбер
    申请人:Жемон-Шнейдер (Фирма)；
    IPC主号:
    专利说明:

     to
    IS
     s
    FIG. one
    The invention relates to electrical and mechanics, namely to an electric drive based on a synchronous motor with two windings on the stator, with
    The purpose of the invention is to improve the rotational uniformity both at start-up and at low speeds by reducing the pulsations of the rotating moment and the noise in the DC source,
    Figure 1 shows the electrical circuit diagram of the electric drive; Fig 2 is the same, another option.
    The AC drive maintains a synchronous motor 5 | 1 (FIG. 1) with two groups of core windings, two inverters 2 and 3, the outputs of each of which are connected by a corresponding group of core windings, a choke with two magnetically coupled 20 windings 4 and 5. Two counter terminals - the positive polarities of the inverters are interconnected, forming a common point and the two other opposite input terminals HHBepTojioB are connected 25 to one of the terminals of the magnetoshore droplet windings, the other terminals of which are connected to the output terminals of the source 6 post direct current from an a direction in schuntirovannogo zo nonconductive direction circuit composed of two series-connected thyristors 7 and 8 o
    Between the common points of the input terminals of inverters 2, 3 and two thyristors 7, 8, a capacitor 9 is connected, and the circuit on thyristors 7, 8 is indicated by a diode 10, which is connected to the positive terminal of the power supply 6 by the cathode, and to the negative terminal of the source 6 food
    In another embodiment, the DC source can be made in the form of a semi-controlled top of a cell made up of two diodes 11, 12, -d (Fig. 2) and two thyristors 13, 14,
    The drive works as follows
    Turning off the thyristors of inverters 2 and 3 is accomplished by interrupting the power supply. The capacitor 9 is pre-charged along the circuit connected to inverter 2 and 3, as shown in and 2. At the moment of idling the source 6, when the current is closed through the diode Yu include the thyristor 7, the capacitor 9 is discharged along the circuit: diode 10, thyristor 7, capacitor 9, inverter 3, motor windings 1, drosse- winding;
    l 5. Due to the inductive connection of the windings 4 and 5 of the throttles with increasing current in the winding 5 of the throttles, it decreases in the winding 4 to zero, which leads to the disconnection of the inverter 2 thyristors,
    Then the other thyristors of the inverter 2 are energized and the capacitor 9 continues to discharge. Under the voltage of the capacitor terminals, the current in the winding 4 and in the inverter 2 increases and decreases in the inverter 3. When the currents in the windings 4 and 5 are equal, the thyristor 7 is normally disconnected. In this case, the capacitor 9 is recharged in the opposite direction and the circuit is prepared for the subsequent switching of the inverter 3. The process of switching it off occurs similarly when the thyristor 8 is turned off,
    As a result, the current flowing through the inverters 2 and 3 and the windings of the engine 1 remains constant, which reduces the ripple of the torque and increases the uniformity of rotation.
    The device of FIG. 2 operates in a similar manner, where a diode 10 and 12 o circuit is used as the diode 10.
    Thus, the invention has great advantages since it provides control of a two-winding synchronous motor at start-up and at low engine speeds | do not cause interruption in the spinning myente due to the mutual compensation of the current carried out between the motor windings. The switching of both thyristors 7 and 8 takes place during the idle phase, therefore no interference occurs in the current source, since the current passes through diode 10 The switching time is also used by a small number of switching thyristors for switching the twelve thyristors of the inverters with a common power source. This solution is of interest to control railway motors. ozhnoy thrust, since the motors can in this case to inform the larger moments at startup without mechanical interference ,, and power during starting does not cause electrical interference on distribution lines
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    AC drive containing a synchronous motor with
    two groups of core windings, two inverters, the output of each of which is connected to the corresponding group of core windings of a synchronous motor; A choke with two identical magnetowired windings with a high coupling coefficient, one input terminals of opposite polarities of inverters are connected together to form a common point, and other input terminals are connected to one vdaodam of magnetically connected windings of the chokes, the other terminals of which are connected to the output terminals of the source direct current, two series-connected thyristors, under JL7 "12
    f t L3
    connected parallel to the DC source, shunting the DC source circuit, characterized in that, in order to increase the uniformity of rotation both at start-up and at low speeds by reducing the ripple of the torque and noise in the DC source, a capacitor was introduced, connected between the common points of the thyristors and inverters, and the shunt circuit is made on a diode, the cathode connected to the positive terminal of the DC source, and the anode to the negative terminal of the DC source about
    FIG. 2
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    同族专利:
    公开号 | 公开日
    AT30491T|1987-11-15|
    HU189343B|1986-06-30|
    EP0107539A1|1984-05-02|
    CA1211499A|1986-09-16|
    PT77385B|1986-03-11|
    KR840006887A|1984-12-03|
    DE3374253D1|1987-12-03|
    ES525648A0|1984-11-16|
    US4518908A|1985-05-21|
    IN160826B|1987-08-08|
    CS252464B2|1987-09-17|
    AU555702B2|1986-10-02|
    FR2534424B1|1984-12-21|
    FR2534424A1|1984-04-13|
    HUT34294A|1985-02-28|
    KR870002154B1|1987-12-12|
    JPH0548074B2|1993-07-20|
    IN160624B|1987-07-18|
    TR21585A|1984-11-12|
    ES8500679A1|1984-11-16|
    JPS5986485A|1984-05-18|
    ZA836694B|1984-06-27|
    PT77385A|1983-10-01|
    EP0107539B1|1987-10-28|
    AU1835583A|1984-04-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1538150A1|1966-03-10|1970-01-08|Siemens Ag|Converter machine for controllable speeds|
    DE2141120C3|1971-08-17|1975-01-23|Siemens Ag, 1000 Berlin Und 8000 Muenchen|Start-up circuit for a synchronous machine mk electronic commutator|
    US3775662A|1971-12-07|1973-11-27|Bendix Corp|Constant frequency power inverter having silicon controlled rectifier multibridge inputs for output wave shaping with variable phase control for overload conditions|
    FR2385252B1|1977-03-25|1980-01-04|Alsthom Cgee|
    US4288732A|1978-11-30|1981-09-08|General Electric Company|Forced commutated starting circuit for load commutated inverter drive system|
    FR2452200B1|1979-03-22|1981-12-04|Jeumont Schneider|
    FR2479600B1|1980-03-25|1984-05-25|Jeumont Schneider|
    FR2481536B1|1980-04-24|1984-05-25|Jeumont Schneider|DE8810279U1|1988-08-12|1988-10-06|Siemens Ag, 1000 Berlin Und 8000 Muenchen, De|
    DE4138256A1|1991-11-21|1993-05-27|Asea Brown Boveri|METHOD AND CIRCUIT FOR FORMING ELECTRICAL ENERGY|
    JP4713889B2|2005-01-07|2011-06-29|株式会社藤井合金製作所|Buried gas plug|
    CN100536315C|2007-05-09|2009-09-02|哈尔滨工业大学|Permanent-magnetic synchronous motor weak magnetic control system based on A. C. indirect control|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8216786A|FR2534424B1|1982-10-07|1982-10-07|
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