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    • 7. 发明授权
    • Cycloconverter generator
    • 旋转变压器发电机
    • US08089792B2
    • 2012-01-03
    • US12436367
    • 2009-05-06
    • Toshinori InagawaShinsaku NakayamaYoshinori Masubuchi
    • Toshinori InagawaShinsaku NakayamaYoshinori Masubuchi
    • H02M7/521
    • H02P27/16H02M5/271H02M5/273
    • In a cycloconverter generator, there are provided, q number of power circuits that supply rectified DC power of a DC power supply unit as operating power to the p(p>q) number of thyristors, and r(p>r) number of thyristor drive circuits that are connected to the q number of the power circuits and drive the p number of the thyristors, wherein the r number of the thyristors drive circuits are individually used to drive in common ones among the p number of the thyristors whose operation is unaffected even if driven at the same timing such that the number r of the drive circuits is made smaller than the number p of the thyristors, thereby enabling to simplify circuit configuration.
    • 在循环换流器发电机中,提供了多个电源电路,其将直流电源单元的整流直流电力提供给p(p> q)个晶闸管的工作功率,r(p> r)个晶闸管数量 连接到q个电源电路并驱动p个晶闸管的驱动电路,其中r个晶闸管驱动电路的r个数被单独地用于驱动p个可操作的晶闸管的操作不受影响 即使在相同的定时驱动,使得驱动电路的数量r小于晶闸管的数量p,从而能够简化电路配置。
    • 10. 发明申请
    • MODULATION METHOD AND APPARATUS FOR STATIC POWER FREQUENCY CHANGERS
    • 静态电力变频器的调制方法和装置
    • WO1987001529A1
    • 1987-03-12
    • PCT/AU1986000250
    • 1986-08-26
    • SMITH, Gregory, Peter
    • H02M05/27
    • H02P27/16H02M5/273
    • The performance of the cycloconverter when used to drive an induction motor is at present limited because of inadequate methods of modulating the thyristor conduction angles. The main problems are: low maximum frequency due to subharmonics; voltage distortion due to discontinuous current and to uncertainty of current cross-over (for non-circulating current mode); and poor power factor on the input. This specification describes a modulation method which overcomes the first two of these problems without sacrificing performance in any area and proposes a new method to greatly improve the input power factor, although at the expense of possible input current subharmonics. A non-limiting application of the method to a 3 pulse, 3 phase, non-circulating current cycloconverter is described. The technique may also be applied to static power frequency changers other than the cycloconverter. In one broad form, there is provided in a static power frequency changer connecting one or more input phases to one or more outputs, said changer comprising one or more electronic switching means comprising a plurality of electronic switches, modulation means to sequentially activate individual switches of said electronic switching means, said electronic switching means connecting an AC voltage supply comprising one or more input phases to an output, so that the output voltage waveform at said output is built up of sections of the input voltage waveforms on said one or more input phases; a method of selecting, for each said output, an instant of switching of the input waveform to be connected to said output, wherein: for each output said instant of switching is chosen so that during a predetermined time interval the average of the difference between the continuous integral of the desired output voltage and an estimate of the continuous integral of the actual output voltage is minimised, said predetermined time interval including said instant of switching to another input waveform.
    • 当用于驱动感应电机时,循环换流器的性能目前受到限制,因为调制晶闸管导通角的方法不足。 主要问题是:由于次谐波引起的最大频率偏低; 由于不连续电流引起的电压失真和电流交叉的不确定性(对于非循环电流模式); 输入功率因数较差。 本说明书描述了一种在不牺牲任何领域的性能的情况下克服这些问题的前两者的调制方法,并且提出了一种大大提高输入功率因数的新方法,尽管可能以可能的输入电流次谐波为代价。 描述了将该方法非限制性地应用于3脉冲,3相,非循环电流循环变换器。 该技术也可以应用于除了循环换流器之外的静态功率变换器。 在一种广泛的形式中,提供了将一个或多个输入相连接到一个或多个输出的静态功率变频器,所述变换器包括一个或多个电子开关装置,所述电子开关装置包括多个电子开关,调制装置, 所述电子开关装置,所述电子开关装置将包括一个或多个输入相位的AC电压电源连接到输出端,使得所述输出端处的输出电压波形由所述一个或多个输入相位上的输入电压波形的部分构成 ; 为每个所述输出选择要连接到所述输出的输入波形的切换时刻的方法,其中:对于每个输出,选择所述切换时刻,使得在预定时间间隔内,所述输入波形的平均值 期望输出电压的连续积分和实际输出电压的连续积分的估计被最小化,所述预定时间间隔包括切换到另一个输入波形的所述时刻。