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    • 2. 发明授权
    • High-speed plural-phase reluctance type motor including a plurality of
semiconductor switching elements each repectively connected to one of a
plurality of armature coils for quickly reducing or building up
exciting current
    • 高速多相磁阻式电动机包括多个半导体开关元件,每个半导体开关元件分别连接到多个电枢线圈中的一个,用于快速减少或建立励磁电流
    • US5406184A
    • 1995-04-11
    • US081377
    • 1993-06-28
    • Itsuki Bahn
    • Itsuki Bahn
    • H02P25/08H02P5/38
    • H02P25/089
    • Armature current is maintained at a predetermined level by a chopper circuit, and part of the magnetic energy stored in magnetic cores of armature coils is transferred to a small-capacitance capacitor to be stored as an electrostatic energy in accordance with a chopper frequency when the armature coil is deactivated. The charged electrostatic energy is utilized to compensate energy loss such as iron loss and copper loss occurring when activation of the armature coils is switched so as to make the armature current build up quickly, thereby realizing a reluctance type motor capable of operating in a high-speed region with large torque. The above-described technical feature can be applied to a three-phase DC motor with a magnet rotor and a stepping motor in the same manner to obtain similar function and effect.
    • PCT No.PCT / JP92 / 01319 Sec。 371日期:1993年6月28日 102(e)日期1993年6月28日PCT提交1992年10月9日PCT公布。 出版物WO93 / 09594 日期为1993年5月13日。通过斩波电路将电流维持在预定电平,并且将存储在电枢线圈的磁芯中的一部分磁能转移到小电容电容器,以根据 电枢线圈停用时的斩波频率。 充电的静电能用于补偿当电枢线圈的激活被切换时发生的铁损和铜损耗等能量损失,从而使得电枢电流迅速增长,从而实现能够在高电压下工作的磁阻型电动机, 转速范围大,转矩大。 上述技术特征可以以相同的方式应用于具有磁转子和步进电动机的三相DC电动机,以获得类似的功能和效果。
    • 6. 发明授权
    • Pulse width modulated inverter adaptive logic
    • 脉冲宽度调制逆变器自适应逻辑
    • US3662247A
    • 1972-05-09
    • US3662247D
    • 1970-10-01
    • RELIANCE ELECTRIC CO
    • SCHIEMAN ROBERT G
    • H02M7/527H02P27/08H02M1/12H02M7/52H02P5/38
    • H02P27/08H02M7/527H02P27/047
    • A pulse width modulated inverter is disclosed wherein adaptive logic is provided to control conduction of the switch means in the inverter. This logic controls the inverter switching rate and modulating pulse and notch width so that the power inverter section does not overheat because of a switching rate or fail because of a narrow modulating pulse. The adaptive logic is responsive to pulse width, notch width and a maximum or minimum carrier frequency all controlling the change of the ratio of carrier frequency to fundamental frequency. A three-phase system is described wherein the ratio of carrier to fundamental frequency is capable of being maintained at 3:1, which establishes a non-symmetrical wave with second harmonics in the fundamental output frequency yet which establishes a higher output voltage than a ratio of 6:1 of the carrier to fundamental frequencies and eliminates a large step of voltage when changing from a carrier to fundamental frequency ratio of 6:1 up to an unmodulated six-step output voltage from the inverter.
    • 公开了一种脉宽调制逆变器,其中提供自适应逻辑以控制逆变器中的开关装置的导通。 该逻辑控制逆变器开关速率和调制脉冲和陷波宽度,使得功率逆变器部分由于开关速率不过热或由于窄的调制脉冲而失败。 自适应逻辑响应于脉冲宽度,陷波宽度和最大或最小载波频率,全部控制载波频率与基频比的变化。 描述了三相系统,其中载波与基频的比率能够保持在3:1,这在基本输出频率中建立了具有二次谐波的非对称波,其建立比比率更高的输出电压 的载波为基准频率的6:1,从载波改变到基频比为6:1,直到逆变器未调制的六级输出电压,消除了大的电压阶跃。