公开(公告)号：US5047909A

公开(公告)日：1991-09-10

申请号：US604477

申请日：1990-10-29

申请人： Hiromi Hosoda

发明人： Hiromi Hosoda

IPC分类号： H02M5/27 ,  H02M1/12 ,  H02M5/00 ,  H02P27/06

CPC分类号： H02P27/06 ,  H02M1/12

摘要： A power conversion apparatus capable of eliminating inexpedient higher harmonic components from its output, without lowering the conversion efficiency. The apparatus includes a first power converter for converting an input power from a power supply into an output power; a detector for detecting an output current and an output voltage of the first power converter; a high harmonic detector for detecting a higher harmonic component on a basis of the output current and the output voltage, and for producing current reference signal corresponding to the detected higher harmonic component; and a second power converter for producing an inverse of the detected higher harmonic component according to the current reference signal, and combining the produced inverse of the higher harmonic component with the output current of the first power converter such that the higher harmonic component in the output current of the first power converter are cancelled by the inverse of the higher harmonic component.

摘要翻译： 一种功率转换装置，其能够在不降低转换效率的情况下从其输出中消除不正常的高次谐波分量。 该装置包括用于将来自电源的输入功率转换为输出功率的第一功率转换器; 用于检测第一功率转换器的输出电流和输出电压的检测器; 高次谐波检测器，用于根据输出电流和输出电压检测高次谐波分量，并产生与检测到的高次谐波分量对应的电流参考信号; 以及第二功率转换器，用于根据当前参考信号产生检测到的高次谐波分量的反相，并且将所产生的高次谐波分量的反相与第一功率转换器的输出电流组合，使得输出中的高次谐波分量 第一功率转换器的电流被高次谐波分量的倒数消除。

公开(公告)号：US4930064A

公开(公告)日：1990-05-29

申请号：US256574

申请日：1988-10-12

申请人： Shigeru Tanaka ,  Kazutoshi Miura

发明人： Shigeru Tanaka ,  Kazutoshi Miura

IPC分类号： H02M5/27 ,  H02J3/34 ,  H02M5/45 ,  H02M7/527

CPC分类号： H02J3/34 ,  H02M5/4505 ,  H02M7/527

摘要： A high frequency link power converter apparatus includes a power source, a circulating current type AC-AC converter having an output terminal connected to the power source, a high frequency phase-advancing capacitor connected to an input terminal of the AC-AC converter, a phase controller for controlling a firing phase of the AC-AC converter, an external oscillator for supplying phase reference signals to the phase controller, a first circuit for controlling a crest value of voltages applied to the phase-advancing capacitor, a second circuit for detecting a phase difference between the reference signals and the voltages applied to the phase-advancing capacitor, and a third circuit for controlling the phase difference, so that the magnitude of the phase difference becomes substantially zero.

摘要翻译： 一种高频链路功率转换装置，包括电源，具有与电源连接的输出端的循环电流型AC-AC变换器，与AC-AC变换器的输入端连接的高频相位推进电容器 用于控制AC-AC转换器的点火相位的相位控制器，用于向相位控制器提供相位参考信号的外部振荡器，用于控制施加到相位推进电容器的电压的波峰值的第一电路，用于检测相位参考信号的第二电路 参考信号和施加到相推进电容器的电压之间的相位差，以及用于控制相位差的第三电路，使得相位差的幅度基本为零。

公开(公告)号：US4843296A

公开(公告)日：1989-06-27

申请号：US63230

申请日：1987-06-17

申请人： Shigeru Tanaka

发明人： Shigeru Tanaka

IPC分类号： H02M5/27

CPC分类号： H02M5/271

摘要： An apparatus according to this invention includes a DC power source, a DC-AC power converter having an output terminal coupled to the DC power source via a DC reactor, a high-frequency, phase-advanced capacitor coupled to an input terminal of the DC-AC power converter, a circulating current type cycloconverter having an input terminal coupled to the phase-advanced capacitor, and an AC motor coupled to the output terminal of the cycloconverter. In this apparatus, a current supplied from the DC power source is controlled by the DC-AC power converter, so that a crest value of a voltage applied to the phase-advanced capacitor is substantially constant. The cycloconverter controls to supply a sine wave current of a variable frequency (0 to several hundred Hz) to the AC motor.

摘要翻译： 根据本发明的装置包括DC电源，DC-AC功率转换器，其具有经由直流电抗器耦合到DC电源的输出端子，耦合到DC的输入端子的高频，相位超前电容器 -AC功率转换器，具有耦合到相位超前电容器的输入端的循环电流型循环换流器，以及耦合到循环换流器的输出端的AC电动机。 在该装置中，由直流电源提供的电流由直流 - 交流功率转换器控制，使得相位超前电容器施加的电压的波峰值基本上是恒定的。 循环变频器控制向交流电机提供可变频率（0到几百赫兹）的正弦波电流。

公开(公告)号：US4764859A

公开(公告)日：1988-08-16

申请号：US68068

申请日：1987-06-30

申请人： Takayuki Matsui ,  Toshiaki Okuyama

发明人： Takayuki Matsui ,  Toshiaki Okuyama

IPC分类号： H02M5/27 ,  H02M5/45 ,  H02M5/257

CPC分类号： H02M5/4505

摘要： A current-circulating cycloconverter includes a positive converter and a negative converter connected in anti-parallel with each other through a DC reactor. A load is connected to an intermediate tap of the DC reactor. When a load current flowing to the load is smaller than a predetermined value, a circulating current flowing through the positive and negative converters is held at a minimum required value. A circulating current is caused to additively flow for canceling a voltage drop produced across the DC reactor when the load current exceeds the predetermined value.

摘要翻译： 电流循环循环变换器包括通过DC电抗器彼此反并联连接的正转换器和负转换器。 负载连接到直流电抗器的中间抽头。 当流向负载的负载电流小于预定值时，流过正转换器和负转换器的循环电流保持在最小要求值。 当负载电流超过预定值时，引起循环电流相加流动以消除跨过DC电抗器产生的电压降。

公开(公告)号：US4675802A

公开(公告)日：1987-06-23

申请号：US824253

申请日：1986-01-30

申请人： Hidehiko Sugimoto

发明人： Hidehiko Sugimoto

IPC分类号： G05F1/70 ,  G05F1/45 ,  H02M5/25 ,  H02M5/257 ,  H02M5/27 ,  H02M5/297 ,  H02M5/00

CPC分类号： H02M5/273

摘要： A 3-phase-to-3-phase power converter is intended to control the output voltage and current so as to provide a 3-phase sinusoidal wave which is controlled in compliance with the input voltage. The main circuit has a switching period shorter than 30.degree. of the power voltage waveform and it is controlled so that switching of lines takes place in alternate fashion, whereby the input power factor is improved.

摘要翻译： 3相到3相功率转换器旨在控制输出电压和电流，以提供一个根据输入电压进行控制的三相正弦波。 主电路具有比电源电压波形小于30°的开关周期，并且被控制，使得线路的切换以交替的方式发生，由此提高了输入功率因数。

公开(公告)号：US4670826A

公开(公告)日：1987-06-02

申请号：US813985

申请日：1985-12-27

申请人： Shigeru Tanaka

发明人： Shigeru Tanaka

IPC分类号： H02M5/27 ,  H02M7/757

CPC分类号： H02M7/7575 ,  Y02E60/60 ,  Y02P80/112

摘要： A control system for a cycloconverter of the circulating current type produces an ac current of a variable frequency. The cycloconverter is configured to connect a power factor compensating capacitor at its receiving-end, thus to control a lagging reactive power due to a circulating current flowing in the cycloconverter so as to cancel a leading reactive power due to the power factor compensating capacitor. Such a control is carried out under the condition of an operation below the rated load. In contrast, under the condition of an operation above the rated load, a control is effected so that the circulating current flowing in the cycloconverter is substantially kept constant.

摘要翻译： 用于循环电流型循环变换器的控制系统产生可变频率的交流电流。 循环变换器被配置为在其接收端连接功率因数补偿电容器，从而由于在循环换流器中流动的循环电流而控制滞后的无功功率，从而消除由于功率因数补偿电容器引起的引导无功功率。 这样的控制在低于额定负载的操作的条件下进行。 相反，在高于额定负载的操作的条件下，进行控制，使得在循环换流器中流动的循环电流基本保持恒定。

公开(公告)号：US4648022A

公开(公告)日：1987-03-03

申请号：US829740

申请日：1986-02-14

申请人： Colin D. Schauder

发明人： Colin D. Schauder

IPC分类号： H02M5/27 ,  H02M5/22

CPC分类号： H02M5/273

摘要： A three-pulse UFC system uses three groups of three bilateral switches controlled according to a switch polarity pattern to generate AC currents to a load, and a deadband hysteresis having upper and lower limits is used to maintain the load current so as to match a reference current.

摘要翻译： 三脉冲UFC系统使用根据开关极性图案控制的三组三个双向开关以产生对负载的AC电流，并且使用具有上限和下限的死区滞后来保持负载电流以匹配参考 当前。

公开(公告)号：US4581696A

公开(公告)日：1986-04-08

申请号：US596330

申请日：1984-04-03

申请人： Laszlo Gyugyi ,  Theodore M. Heinrich ,  Gyu-Hyeong Cho

发明人： Laszlo Gyugyi ,  Theodore M. Heinrich ,  Gyu-Hyeong Cho

IPC分类号： H02M5/27 ,  H02M5/257

CPC分类号： H02M5/273

摘要： In a pulse-width modulated unrestricted frequency changer (UFC) the harmonic contents of the input current are minimized by splitting the active time intervals within the fundamental time frame into at least two pulses which are located within such time frame and controlled in width as if individual PWM single-pulse UFC's were controlled having a phase shift between each other so as to eliminate or reduce undesired frequency components. Such elimination or minimization of selected frequency components is used to reduce the size of the lowpass filter at the input of the UFC, namely by allowing a higher cut-off resonance limit.

摘要翻译： 在脉冲宽度调制的无限制频率变换器（UFC）中，通过将基本时间帧内的有效时间间隔分成至少两个脉冲，使输入电流的谐波内容最小化，这两个脉冲位于这样的时间范围内，如图 单个PWM单脉冲UFC被控制为具有彼此之间的相移，以便消除或减少不期望的频率分量。 使用所选频率分量的这种消除或最小化来减小在UFC的输入处的低通滤波器的尺寸，即通过允许更高的截止共振极限。

公开(公告)号：US4488216A

公开(公告)日：1984-12-11

申请号：US490079

申请日：1983-04-29

申请人： Laszlo Gyugyi ,  Miklos Sarkozi

发明人： Laszlo Gyugyi ,  Miklos Sarkozi

IPC分类号： H02M5/27 ,  H02P27/16 ,  H02M5/257

CPC分类号： H02M5/271 ,  H02P27/16

摘要： In a static frequency changer controlled by adjusting the time of conduction of the bilateral switching units forming static converters, the time of conduction is split into n time intervals of conduction of respective subdurations adding-up to be equivalent to the effective time of conduction of the controlled switching unit, and such subdurations are spread and distributed throughout the time period of control of the switching unit within the original switching pattern of the converters, thereby to improve the quality of the output and input currents.

摘要翻译： 在通过调整形成静态转换器的双向开关单元的导通时间来控制的静态变频器中，传导时间被分成相关的各个小区的n个时间间隔的传导，相当于传导的有效时间 控制开关单元，并且在转换器的原始开关模式中的开关单元的控制的整个时间段期间扩展和分布这样的子电路，从而提高输出和输入电流的质量。

公开(公告)号：US4418380A

公开(公告)日：1983-11-29

申请号：US305226

申请日：1981-09-24

申请人： Shigeru Tanaka ,  Susumu Tadakuma

发明人： Shigeru Tanaka ,  Susumu Tadakuma

IPC分类号： H02M5/27 ,  H02P13/30

CPC分类号： H02M5/271

摘要： A circulating current of a cycloconverter in each phase is distributed and controlled in such a way that a circulating current in a phase having a large absolute value of a load current is small, and the circulating current of a phase having a small absolute value of the load current is large. Therefore, the reactive power is so compensated that the sum of lagged reactive powers of the phases and advanced reactive power of a phase advancing capacitor cancel out each other.

摘要翻译： 每相中的循环变换器的循环电流被分布和控制，使得负载电流绝对值大的相位中的循环电流小，并且具有小的绝对值的相位的循环电流 负载电流大。 因此，无功功率得到如此补偿，使得相位提前电容器的相位和高级无功功率的滞后无功功率之和相互抵消。