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31.发明授权Independent control of the AC line current and output DC voltage of a high power factor AC-to-DC converter 失效独立控制交流线路电流和高功率因数AC-DC转换器的输出直流电压
公开(公告)号：US5283727A
公开(公告)日：1994-02-01
申请号：US945791
申请日：1992-09-16
CPC分类号： H02M1/4208 , H02M3/3376 , H02M1/4266 , Y02B70/123 , Y02P80/112
摘要： A method and system for controlling a dual output power converter of the type having a pair of input terminals connectable to a source of rectified AC power of variable voltage amplitude, a boosting circuit including a secondary winding of a boost transformer operatively coupled in circuit with the pair of input terminals for providing a boosted voltage onto a DC power bus, and a full-bridge inverter including at least one controllable switching device serially connected in each leg of the inverter. The inverter has an input connected to the DC bus and a pair of output terminals connected to respective ends of a primary winding of an output transformer, at least one of the pair of output terminals being connected in circuit with the primary winding of the boost transformer. The control system compares signals representative of the magnitude of the AC power voltage to signals representative of the DC bus voltage and varies the inverter frequency of operation in a manner to adjust the magnitude of the DC bus voltage to establish a preselected ratio of DC bus voltage to AC power voltage.
摘要翻译： 一种用于控制具有可连接到可变电压幅度的整流AC电源的一对输入端的类型的双输出功率转换器的方法和系统，升压电路包括可操作地耦合到电路中的升压变压器的次级绕组， 一对用于在直流电源总线上提供升压电压的输入端子，以及包括串联连接在逆变器的每个支路中的至少一个可控开关装置的全桥逆变器。 逆变器具有连接到DC总线的输入端和连接到输出变压器的初级绕组的相应端的一对输出端子，该对输出端子中的至少一个与升压变压器的初级绕组电路连接 。 控制系统将表示交流电源电压的大小的信号与代表直流母线电压的信号进行比较，并以改变直流母线电压的大小的方式改变逆变器的工作频率，以建立直流母线电压的预选比例 到交流电源电压。
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公开(公告)号：US5179512A
公开(公告)日：1993-01-12
申请号：US761523
申请日：1991-09-18
CPC分类号： H02M7/217 , H01F27/2804 , H02M3/33592 , H01F2027/2861 , Y02B70/1433 , Y02B70/1441 , Y02B70/1475 , Y02P80/112
摘要： A resonant converter, including a transformer for separating a high-voltage (primary) side from a relatively low-voltage (secondary) side, has at least one synchronous rectifier and an auxiliary sense winding coupled to the gate thereof. The input capacitances of the synchronous rectifiers are reflected to the primary side and the secondary side by the square of the ratio of the number of auxiliary sense winding turns to the number of primary andsecondary winding turns, respectively, thereby reducing the required size of the discrete resonant capacitor. In one embodiment, a gate bias voltage approximately equal to the device threshold voltage is applied to the gate of the synchronous rectifiers. The auxiliary sense windings are etched into a conductive film pattern of the secondary windings. The auxiliary sense windings provide nearly identical secondary and gate drive voltages so that the synchronous rectifiers are gated substantially at the zero-voltage crossings of the secondary winding voltages. The result is a substantially lossless gate drive for synchronous rectifiers in high power density resonant converters.
摘要翻译： 包括用于将高压（初级）侧与相对低压（次级）侧分离的变压器的谐振转换器具有至少一个同步整流器和耦合到其栅极的辅助感测绕组。 同步整流器的输入电容分别通过辅助感测绕组匝数与初级绕组匝数和次级绕组匝数之比的平方反射到初级侧和次级侧，从而减小了所需的尺寸 离散谐振电容器。 在一个实施例中，大约等于器件阈值电压的栅极偏置电压被施加到同步整流器的栅极。 辅助感测绕组被蚀刻成次级绕组的导电膜图案。 辅助感测绕组提供几乎相同的次级和栅极驱动电压，使得同步整流器基本上在次级绕组电压的零电压交叉处门控。 结果是在高功率密度谐振转换器中同步整流器的基本无损栅极驱动。
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公开(公告)号：US5010261A
公开(公告)日：1991-04-23
申请号：US447947
申请日：1989-12-08
IPC分类号： H03K17/0412 , H03K17/0416 , H03K17/687
CPC分类号： H03K17/04163 , H03K17/04123 , H03K17/6871 , H03K2217/0036
摘要： A high efficiency gate driver circuit for driving a power switching device of a high frequency converter includes a series resonant circuit for making resonant transfers of energy between the input capacitance of the power switching device and a storage capacitor to achieve substantially lossless gate switching. An ac switch couples the resonant circuit to the junction between upper and lower switching devices connected in a half-bridge configuration. The upper and lower switches of the half-bridge function to maintain the power switching device in either an ON-state or an OFF-state, respectively, depending on the transfer of energy being made. Timing circuitry ensures proper gating of the switching devices relative to operation of the ac switch.
摘要翻译： 用于驱动高频转换器的功率开关器件的高效率栅极驱动器电路包括串联谐振电路，用于在功率开关器件的输入电容和存储电容器之间进行能量的谐振传输，以实现基本上无损的栅极切换。 交流开关将谐振电路耦合到以半桥配置连接的上下开关器件之间的连接处。 半桥的上下开关的功能是分别根据所进行的能量传递来将功率开关装置保持在导通状态或断开状态。 定时电路确保交换设备相对于交流开关的运行而正确选通。
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公开(公告)号：US4672528A
公开(公告)日：1987-06-09
申请号：US866818
申请日：1986-05-27
CPC分类号： H02M3/3376 , H02M2007/53878 , Y02B70/1433 , Y02B70/1441
摘要： A resonant inverter is operated in a manner to provide a substantially constant output voltage to a load. The inverter is controlled using either a frequency control mode or a phase shift control mode. In the frequency control mode, a constant output voltage is maintained through frequency variation of the rectangular wave signal applied to the resonant circuit of the inverter. In the phase shift control mode, constant output voltage is maintained by phase shifting one component signal of the rectangular wave signal relative to another component signal thereof while maintaining constant the frequency of both component signals. Mode switching occurs automatically at the extremities of the operating frequency range of controllable switch means in the resonant inverter.
摘要翻译： 谐振逆变器以向负载提供基本恒定的输出电压的方式操作。 使用频率控制模式或相移控制模式控制变频器。 在频率控制模式中，通过施加到逆变器的谐振电路的矩形波信号的频率变化来保持恒定的输出电压。 在相移控制模式中，通过相对于其另一分量信号相移矩形波信号的一个分量信号并保持两个分量信号的频率恒定来维持恒定的输出电压。 在谐振逆变器的可控开关装置的工作频率范围的末端，自动切换模式。
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公开(公告)号：US4642745A
公开(公告)日：1987-02-10
申请号：US835708
申请日：1986-03-03
CPC分类号： H02M1/4208 , H02M2001/4275 , H02P2201/05 , Y02B70/126 , Y02P80/112
摘要： A single power converter is capable of drawing low distortion current from an AC line and delivering DC or AC power to a load. The single power converter is used to independently control the input current and the output current. The power converter transformer has an output winding which is controlled by pulse-width modulation (PWM) and a frequency controlled boost winding for controlling input current.
摘要翻译： 单个功率转换器能够从AC线路中获取低失真电流，并将DC或AC电力传送到负载。 单电源转换器用于独立控制输入电流和输出电流。 电源转换器变压器具有通过脉宽调制（PWM）控制的输出绕组和用于控制输入电流的频率控制升压绕组。
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36.发明授权Dual output DC-DC converter with independently controllable output voltages 失效双输出DC-DC转换器，具有独立可控的输出电压
公开(公告)号：US4628426A
公开(公告)日：1986-12-09
申请号：US793430
申请日：1985-10-31
IPC分类号： H02M3/335
CPC分类号： H02M3/33561 , Y02B70/1433
摘要： A single DC power switching converter feeds two DC load circuits from two transformer secondary windings. One winding is tightly coupled to the primary and its output voltage is controlled using pulse-width modulation. The other secondary winding is loosely coupled to the primary so that its leakage inductance resonates with a secondary capacitor such that its output is controlled by converter frequency adjustment. Thus, both output voltages are controlled using a single power switching stage.
摘要翻译： 单个直流电源开关转换器从两个变压器次级绕组馈送两个直流负载电路。 一个绕组紧密耦合到初级，其输出电压通过脉冲宽度调制来控制。 另一个次级绕组松动地耦合到初级绕组，使得其漏电感与次级电容谐振，使得其输出由转换器频率调节来控制。 因此，使用单个功率开关级来控制两个输出电压。
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公开(公告)号：US4581542A
公开(公告)日：1986-04-08
申请号：US551629
申请日：1983-11-14
IPC分类号： H03K17/00 , H03K17/732 , H03K17/72
CPC分类号： H03K17/732 , H03K2217/0036
摘要： A bipolar emitter switching transistor in an emitter switched gate turn-off thyristor (GTO) arrangement has a controllable switching device coupled between the base of the emitter switching transistor and the anode of the GTO so that base current needed for the bipolar emitter switching transistor, to obtain a low collector-emitter voltage drop during transistor conduction, is derived from the load circuit, resulting in a greatly reduced base drive power supply requirement.
摘要翻译： 发射极开关栅极截止晶闸管（GTO）布置中的双极型发射极开关晶体管具有耦合在发射极开关晶体管的基极和GTO的阳极之间的可控开关器件，使得双极型发射极开关晶体管所需的基极电流， 为了在晶体管导通期间获得低的集电极 - 发射极电压降，从负载电路导出，导致基本驱动电源要求大大降低。
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公开(公告)号：US4445049A
公开(公告)日：1984-04-24
申请号：US334844
申请日：1981-12-28
CPC分类号： H02J3/383 , H02M3/3155 , H02M7/5152 , Y02E10/563 , Y10S323/906 , Y10T307/511
摘要： A transistor is operated in the PWM mode such that a hlaf sine wave of current is delivered first to one-half of a distribution transformer and then the other as determined by steering thyristors operated at the fundamental sinusoidal frequency. Power to the transistor is supplied by a dc source such as a solar array and the power is converted such that a sinusoidal current is injected into a utility at near unity power factor.
摘要翻译： 晶体管以PWM模式工作，使得电流的hlaf正弦波首先传输到配电变压器的二分之一，然后另一个由在基本正弦频率下操作的转向晶闸管确定。 晶体管的功率由诸如太阳能阵列的直流电源提供，并且功率被转换成使得正弦电流以接近的单位功率因数被注入到电力公司。
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公开(公告)号：US4347464A
公开(公告)日：1982-08-31
申请号：US239724
申请日：1981-03-02
IPC分类号： H02K29/08
CPC分类号： H02K29/08
摘要： A multipole permanent magnet rotor is positioned on a shaft and rotatably mounted in a multiphase stator having two windings per stator phase. A distributor comprising a pattern of conducting and non-conducting material is mounted to turn with the rotor shaft. Pickup "fingers" in contact with the distributor, gate appropriate FET's of the pairs of FET's associated with each stator phase in sequence, with timing dependent on the instantaneous shaft position, to generate a rotating flux field. A voltage across the windings provides the current for flux generation, and can be supplied by a full wave rectified single phase AC source. The speed of rotation of the motor can be controlled by varying the voltage supplied.
摘要翻译： 多极永磁转子位于轴上并可旋转地安装在每个定子相中具有两个绕组的多相定子中。 包括导电材料和非导电材料的图案的分配器安装成与转子轴一起转动。 拾取“指”与分配器接触，按顺序选择与每个定子相位相关联的FET对，其中定时取决于瞬时轴位置，以产生旋转磁通场。 绕组两端的电压提供了用于产生磁通的电流，并且可以由全波整流的单相交流电源提供。 可以通过改变所提供的电压来控制电动机的旋转速度。
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40.发明授权Forced commutated starting circuit for load commutated inverter drive system 失效用于负载换向变频器驱动系统的强制整流启动电路
公开(公告)号：US4288732A
公开(公告)日：1981-09-08
申请号：US965165
申请日：1978-11-30
CPC分类号： H02P1/46
摘要： In an inverter-synchronous machine drive system wherein a synchronous machine is excited by an inverter from a source of direct current, a pair of controlled bidirectional conduction means are serially coupled across the source of direct current potential, and are coupled at their junction through a commutating capacitor to the machine neutral terminal. Each controlled bidirectional conduction means, together with corresponding phase connected thyristor within the inverter, is correspondingly gated in a predetermined sequence so as to cause alternating voltage to be applied across each corresponding machine phase for initial machine excitation.
摘要翻译： 在逆变器同步机驱动系统中，其中同步电机由逆变器从直流电源激励，一对受控双向传导装置跨越直流电势源串联耦合，并通过一个 整流电容器到机器中性端子。 每个受控双向传导装置以及逆变器内相应的相连的晶闸管相应地以预定的顺序进行门控，以使交流电压施加在每个对应的机器相位上用于初始机器激励。
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