Apparatus for repeatedly applying short-circuit pulses to a current type
inverter for output current control
    1.
    发明授权
    Apparatus for repeatedly applying short-circuit pulses to a current type inverter for output current control 失效
    用于对电流型逆变器反复施加短路脉冲以进行输出电流控制的装置

    公开(公告)号:US4581693A

    公开(公告)日:1986-04-08

    申请号:US600902

    申请日:1984-04-16

    IPC分类号: H02M7/527

    CPC分类号: H02M7/527

    摘要: An apparatus for controlling a current type inverter including a bridge circuit of bridge-connected self-extinguish elements triggered by pulse width modulation signals. A current is provided for applying a single or plural triggering pulses having a desired pulse width to those self-extinguish elements connected in series with the other self-extinguish elements forming the pairs in the bridge circuit and which other self-extinguish elements are turned on by the pulse width modulation signals. By the above manner of control, the current type inverter can generate output currents of sinusoidal waveform, and the value of the output currents can be controlled over a very wide range.

    摘要翻译: 一种用于控制电流型逆变器的装置,包括由脉冲宽度调制信号触发的桥接自熄元件的桥式电路。 提供电流以将具有期望脉冲宽度的单个或多个触发脉冲施加到与形成桥接电路中的对的其它自熄灭元件串联连接的那些自熄灭元件,以及其他自熄灭元件被接通 通过脉宽调制信号。 通过上述控制方式,电流型逆变器可以产生正弦波形的输出电流,可以在非常宽的范围内控制输出电流的值。

    Control circuit for power converter apparatus
    2.
    发明授权
    Control circuit for power converter apparatus 失效
    电源转换器控制电路

    公开(公告)号:US4599685A

    公开(公告)日:1986-07-08

    申请号:US694668

    申请日:1985-01-24

    摘要: Disclosed is a control circuit for a power converter apparatus using self-extinction devices as switching devices, in which turn on and turn off operations of the self-extinction devices are controlled by gate pulses which have been subject to pulse width modulation with a pulse train having a pulse width which is sinusoidally varied, and, at the same time, the self-extinction devices in same phase are made conductive in a predetermined period corresponding to an output voltage reference value to make an output of the power converter apparatus be in a shorted state in the sense of DC current to thereby control the output of the power converter apparatus.

    摘要翻译: 公开了一种使用自消光装置作为开关装置的功率转换装置的控制电路,其中自消除装置的导通和关断操作由已经经过脉冲串脉冲宽度调制的栅极脉冲控制 具有正弦变化的脉冲宽度,同时相同相位的自消光装置在对应于输出电压基准值的预定周期内导通,使得功率转换装置的输出为 在DC电流的意义上的短路状态,从而控制电力转换装置的输出。

    Gate control circuit for current-type inverter apparatus
    3.
    发明授权
    Gate control circuit for current-type inverter apparatus 失效
    电流型逆变器的门控电路

    公开(公告)号:US4549259A

    公开(公告)日:1985-10-22

    申请号:US504436

    申请日:1983-06-15

    CPC分类号: H02M1/084 H02M7/1623

    摘要: A gate control circuit for current-type inverter apparatus having an inverter formed of self-extinction devices connected in a bridge form, comprises a logic circuit, pulse stretchers and gate amplifiers. When a frequency command signal is applied to the logic circuit, the logic circuit generates pulse signals for turning on or off the self-extinction devices, and the pulse signals are delayed for predetermined time in their trailing edges in response to the leading edges of the signals by the pulse stretchers so as to be extended, are amplified by the gate amplifiers, and then are supplied to the gates of the self-extinction devices.

    摘要翻译: 一种用于电流型逆变器装置的栅极控制电路,具有由桥接形式连接的自消除装置形成的反相器,包括逻辑电路,脉冲展宽器和栅极放大器。 当频率指令信号被施加到逻辑电路时,逻辑电路产生用于接通或断开自消光器件的脉冲信号,并且脉冲信号在它们的后沿响应于前沿的延迟预定时间 通过脉冲展开器进行扩展的信号由栅极放大器放大,然后被提供给自消光器件的栅极。

    Electric power converter
    5.
    发明授权
    Electric power converter 失效
    电力转换器

    公开(公告)号:US4926306A

    公开(公告)日:1990-05-15

    申请号:US389295

    申请日:1989-08-03

    IPC分类号: H02M7/48

    CPC分类号: H02M7/5157

    摘要: A power converter comprising: a three phase bridge circuit, each phase of which is composed of series-connected positive and negative arms, each of which arms includes series-connected GTOs; free-wheel diodes coupled in reverse parallel with every GTO; phase snubber circuits provided for every phase, each of which includes series-connected diodes coupled across the series-connected arms through a first capacitor, a junction of the diodes being coupled to a junction of the series-connected arms through a second capacitor and a junction of the first capacitor and the series-connected diodes being coupled to a negative dc terminal through a resistor; and individual snubber circuits provided in the respective GTOs, each of which includes a series connection of a diode and a third capacitor as well as a resistor connected in parallel with the diode; in which the first capacitor has capacitance much larger than the second capacitor, which in turn has capacitance much larger than the third capacitor.

    Current-type converter protecting apparatus
    6.
    发明授权
    Current-type converter protecting apparatus 失效
    电流型转换器保护装置

    公开(公告)号:US4757436A

    公开(公告)日:1988-07-12

    申请号:US9478

    申请日:1987-02-02

    摘要: In a current-type converter system in which a DC current is fed to a load through a pulsating current suppressing DC reactor from a current-type converter constituted by self-extinction elements connected in a bridge circuit, a converter protection apparatus is arranged such that when a fact that a terminal voltage of the DC reactor becomes an overvoltage is detected, the self-extinction elements are turned on so as to form a closed circuit including the DC reactor, the load, and the converter so that the overvoltage can be suppressed and continuous operation of the converter can be carried out.

    摘要翻译: 在直流电流通过脉冲电流抑制DC电抗器从由连接在桥式电路中的自消除元件构成的电流型转换器馈送到负载的电流型转换器系统中,转换器保护装置被布置成使得 当检测到直流电抗器的端子电压变为过电压的事实时,自消除元件导通,形成包括直流电抗器,负载和转换器的闭合电路,从而能够抑制过电压 并且可以进行转换器的连续操作。

    Current-source power converting apparatus with self-extinction devices
    7.
    发明授权
    Current-source power converting apparatus with self-extinction devices 失效
    具有自熄灭装置的电流源电力转换装置

    公开(公告)号:US4672520A

    公开(公告)日:1987-06-09

    申请号:US789826

    申请日:1985-10-21

    摘要: A current-source power converting apparatus having a three phase AC-DC converter composed of self-extinction devices for converting an AC power furnished from an three phase AC power source into a DC power and a DC-AC inverter connected with the AC-DC converter through a DC reactor for re-converting the DC power into a three phase AC power to supply the re-converted power for a load. When the failure of the AC power source is detect according to one embodiment, the AC power source is detached from the AC-DC converter and a battery is connected between arbitrary two phases at the input end of the AC-DC converter. After that, the DC power of the battery is supplied for the DC-AC inverter intermittently by switching the corresponding self-extinction devices of the AC-DC converter and controlled by varying the duty ratio of the switching operation.

    摘要翻译: 一种具有三相AC-DC转换器的电流源电力转换装置,该三相AC-DC转换器由用于将从三相交流电源提供的AC电力转换为直流电力的自消除装置和与AC-DC连接的DC-AC逆变器 转换器通过直流电抗器将直流电转换为三相交流电源,为负载提供重新转换的电力。 当根据一个实施例检测到交流电源的故障时,交流电源从AC-DC转换器分离,电池在AC-DC转换器的输入端连接在任意两相之间。 之后,通过切换AC-DC转换器的相应的自消除装置并通过改变开关操作的占空比进行控制,间断地为DC-AC逆变器提供电池的直流电力。

    Motor control device
    10.
    发明授权
    Motor control device 有权
    电机控制装置

    公开(公告)号:US06555988B2

    公开(公告)日:2003-04-29

    申请号:US09726595

    申请日:2000-12-01

    IPC分类号: H02P618

    CPC分类号: H02P6/182 H02P6/18 H02P25/089

    摘要: In an arrangement having an electric power inverter 2 which applies a voltage to an AC motor 1 and a control unit 4 which calculates a voltage command value applied in PWM signals, detection use voltages Vup, Vvp and Vwp are applied in synchronism with PWM signal generation use carrier waves in the control unit 4 as well as motor currents iv and iv are detected in response to current detection pulses Pd in synchronism therewith. In a magnetic pole position detection unit 12, counter electromotive forces of the synchronous motor 1 are estimated from a relationship between the detection use voltages Vup, Vvp and Vwp and current difference vectors of the motor current to determine a magnetic pole position &thgr; through calculation. The determined magnetic pole position &thgr; is inputted to coordinate conversion units 8 and 11 and a motor speed detection unit 13. Thereby, a motor control device having a control characteristic of a good response property with no magnetic pole position sensor is provided for a control system of a synchronous motor.

    摘要翻译: 在具有向交流电动机1施加电压的电力逆变器2和计算施加在PWM信号中的电压指令值的控制单元4的布置中,与PWM信号生成同步地施加检测用电压Vup,Vvp和Vwp 响应于与其同步的电流检测脉冲Pd,检测控制单元4中的载波以及电动机电流iv和iv。 在磁极位置检测单元12中,根据检测用电压Vup,Vvp和Vwp之间的关系以及电动机电流的电流差矢量来估计同步电动机1的反电动势,以通过计算来确定磁极位置θ。 将确定的磁极位置θ输入到坐标转换单元8和11以及电动机速度检测单元13.由此,提供具有无磁极位置传感器的良好响应特性的控制特性的电动机控制装置用于控制系统 的同步电机。