公开(公告)号：US3761796A

公开(公告)日：1973-09-25

申请号：US25656472

申请日：1972-05-24

Applicant: DANFOSS AS

Inventor： JENSEN A

IPC: H02M3/137 ,  H02P13/22 ,  H02M3/32

CPC classification number: H02M3/137

Abstract: An inverter arrangement including controlled rectifiers, the inverter being supplied by a regulatable direct voltage supply which includes an on-off switchable element and a filter. A control circuit connected to the output of the supply generates and directs first control pulses to the switchable element, and a pulse generator also connected to the output of the supply generates and directs second control pulses to control the rectifiers in the inverter. The control circuit includes a step regulator having an amplifier, a feedback path and apparatus for producing an oscillation, the step regulator having the effect of altering both the frequency and the width of the first control pulses when the voltage at the output of the supply changes.

Abstract translation: 一种包括受控整流器的逆变器装置，逆变器由可调节的直流电源提供，其包括开 - 关可切换元件和滤波器。 连接到电源的输出的控制电路产生并将第一控制脉冲引导到可切换元件，并且还连接到电源的输出的脉冲发生器产生并引导第二控制脉冲以控制逆变器中的整流器。 控制电路包括具有放大器，反馈路径和用于产生振荡的装置的阶跃调节器，该阶跃调节器具有当电源输出端的电压变化时改变第一控制脉冲的频率和宽度的效果 。

公开(公告)号：US3838331A

公开(公告)日：1974-09-24

申请号：US32910473

申请日：1973-02-02

Applicant: DANFOSS AS

Inventor： JENSEN A

IPC: H02M7/48 ,  H02M7/49 ,  H02M1/12 ,  H02M7/52

CPC classification number: H02M7/49

Abstract: A three-phase inverter for producing a stepped voltage approximating to a sinusoidal form, and largely free of odd harmonics, wherein, for the purpose of producing each phase voltage a basic and two additional rectangular impulses are summed, the basic impulse being shortened in relation to a halfwave and occupying substantially the entire amplitude-time area of the phase voltage, and the additional impulses having a considerably smaller amplitude and shorter duration than the basic impulse. One of the additional impulses procedes and the other is superimposed on a basic impulse of the same polarity.

Abstract translation: 一种三相逆变器，用于产生近似于正弦形式的阶梯电压，并且很大程度上没有奇次谐波，其中为了产生每个相电压，将基本和两个额外的矩形脉冲相加，基本脉冲相对缩短 达到半波，并且基本上占据相电压的整个幅度 - 时间区域，并且附加脉冲具有比基本脉冲显着更小的幅度和更短的持续时间。 附加脉冲之一过程，而另一个则叠加在相同极性的基本脉冲上。

公开(公告)号：US3767988A

公开(公告)日：1973-10-23

申请号：US3767988D

申请日：1970-12-03

Applicant: DANFOSS AS

Inventor： JENSEN A

IPC: H02M7/48 ,  H02P27/06 ,  H02P5/28

CPC classification number: H02P27/06 ,  H02M7/48 ,  H02P27/047 ,  H02P2201/03

Abstract: An electrical three-phase generator and motor control circuit. The generator is made of three alike wave-generating units in cascade each generating a respective trapezoidal wave corresponding to a respective phase of the generator. Each unit comprises a small detector in series with a control circuit varying the amplitude of the wave proportionately to a control voltage representative of and corresponding to variations of voltage from voltage sources and applied to a motor and an integrating circuit consisting of an integrating amplifier and an integrating capacitor and a double limiter in parallel therewith. The control voltage is developed by a voltage divider across the motor control circuit.

Abstract translation: 电气三相发电机和电机控制电路。 发电机由级联的三个相同的波形发生单元制成，每个产生相应于发电机的相位的相应的梯形波。 每个单元包括与控制电路串联的小型检测器，该控制电路将波形的幅度成比例地变换成表示并对应于来自电压源的电压的变化并施加到电动机的控制电压，以及由积分放大器和 积分电容器和双限幅器并联。 控制电压由电机控制电路上的分压器开发。