公开(公告)号：US20240072684A1

公开(公告)日：2024-02-29

申请号：US18341474

申请日：2023-06-26

申请人： Apple Inc.

发明人： Sujeet Milind Patole ,  Cheung-Wei Lam ,  Mahmoud N. Mahmoud

IPC分类号： H02M7/48 ,  H02M1/00 ,  H02M1/12 ,  H02M7/529

CPC分类号： H02M7/4803 ,  H02M1/0041 ,  H02M1/12 ,  H02M7/529

摘要： An electronic device may include an inverter. The inverter may convert direct current (DC) power to alternating current (AC) power. The inverter may use a clock signal at a given frequency to output corresponding alternating current signals at the given frequency. The inverter may receive a dithered clock signal that is frequency dithered using a modulating signal. The dithered clock signal may have at least three different frequency levels during a repeated cycle of the modulating signal. The at least three different frequency levels may include a fundamental frequency, a first frequency that is lower than the fundamental frequency, and a second frequency that is higher than the fundamental frequency. The dithered clock signal may be, during the repeated cycle of the modulating signal, at the fundamental frequency for fewer total periods than at the first frequency and for fewer total periods than at the second frequency.

公开(公告)号：US07397203B1

公开(公告)日：2008-07-08

申请号：US11089257

申请日：2005-03-24

申请人： Carlile R. Stevens

发明人： Carlile R. Stevens

IPC分类号： H05B37/02

CPC分类号： H02M7/529 ,  H05B37/0263 ,  H05B41/295 ,  H05B41/3921 ,  H05B41/3922 ,  H05B41/3924 ,  Y10S315/04

摘要： A ballast includes circuitry to allow the level of the lighting to be adjusted as well as circuitry that interfaces the ballast to a control system via the power line. The ballast is provided for adjusting the output by using a conventional triac phase chop dimming circuit. The basic concepts of the circuit can also be used to drive flat panel (electro luminescent) light source.

摘要翻译： 镇流器包括允许调节照明电平的电路以及通过电力线将镇流器连接到控制系统的电路。 镇流器用于通过使用常规的三端双向可控硅相位斩波调光电路来调节输出。 电路的基本概念也可用于驱动平板（电致发光）光源。

公开(公告)号：US06876160B1

公开(公告)日：2005-04-05

申请号：US10642944

申请日：2003-08-18

申请人： Carlile R. Stevens

发明人： Carlile R. Stevens

IPC分类号： H02M7/529 ,  H05B37/02 ,  H05B41/295 ,  H05B41/392 ,  G05F1/00

CPC分类号： H02M7/529 ,  H05B37/0263 ,  H05B41/295 ,  H05B41/3921 ,  H05B41/3922 ,  Y10S315/04

摘要： A ballast with circuitry to allow the level of the lighting device to be adjusted, a separate direct current input and a sensing circuit within the ballast to lower the light level and thus the amount of power required from the direct current input when the normal line power fails. A method of recharging the battery by supply current to flow out of the direct current input when the ballast is operating from line power is also provided.

摘要翻译： 具有允许调节照明装置的电平的电路的镇流器，镇流器内的单独的直流输入和感测电路，以便在正常线路功率时降低光电平和因此直流输入所需的功率量 失败了 还提供了当镇流器从线路电源工作时通过供电电流向直流输入流出的方法。

公开(公告)号：US5034876A

公开(公告)日：1991-07-23

申请号：US580277

申请日：1990-09-10

申请人： Maurice A. Kirchberg, Jr. ,  Alexander Cook

发明人： Maurice A. Kirchberg, Jr. ,  Alexander Cook

IPC分类号： H02M7/529

CPC分类号： H02M7/529

摘要： A pulse-width-modulated inverter models the output response of the system for a given switching angle set under existent load and d.c. link conditions. Before implementation, a provisionally selected angle set is input to the model, which produces an output representative of system operation for the provisional selected set. The harmonics content of the model output is compared with criteria establishing maximally allowable amplitudes for the harmonics and the set is implemented only if the output meets the criteria.

摘要翻译： 脉冲宽度调制的反相器对现有负载和直流电压下给定的开关角度设置系统的输出响应。 链接条件。 在实施之前，将临时选择的角度集合输入到模型，其产生代表临时选择集合的系统操作的输出。 将模型输出的谐波含量与建立谐波最大允许幅度的标准进行比较，只有当输出满足标准时才执行该设置。

公开(公告)号：US4697131A

公开(公告)日：1987-09-29

申请号：US807569

申请日：1985-12-11

申请人： Colin D. Schauder ,  Theodore M. Heinrich

发明人： Colin D. Schauder ,  Theodore M. Heinrich

IPC分类号： H02M7/529 ,  H02P3/18 ,  H02P23/06 ,  H02P27/08 ,  H02P3/20

CPC分类号： H02P27/08 ,  H02M7/529 ,  H02P23/06

摘要： A constant voltage voltage-source inverter of a motor drive includes in its DC-link the combination of diode means, a GTO device and an auxiliary thyristor, the GTO device and the auxiliary thyristor upon transferring to the regenerating mode being cyclically controlled for conduction concurrently with the thyristor of the AC/DC converter so as to match the (voltage-current) domains converter and input of the inverter. Conduction of the GTO device is interrupted before each cyclical control thereof to allow recovery.Initiation of GTO and auxiliary thyristor conduction upon mode transfer is retarded to allow settling of the system before firing the thyristors of the AC/DC converter with a different firing angle.

摘要翻译： 电动机驱动器的恒压电压源逆变器在其DC链路中包括二极管装置，GTO装置和辅助晶闸管的组合，GTO装置和辅助晶闸管在转移到再生模式时被循环控制以同时导通 与AC / DC转换器的晶闸管匹配（电压 - 电流）域转换器和逆变器的输入。 在每次循环控制之前中断GTO装置的传导以允许恢复。 延迟模式转移时启动GTO和辅助晶闸管导通，以便在以不同的触发角度触发AC / DC转换器的晶闸管之前使系统稳定。

公开(公告)号：US4684868A

公开(公告)日：1987-08-04

申请号：US793045

申请日：1985-10-30

申请人： Habib Dadpey ,  David J. Shero

发明人： Habib Dadpey ,  David J. Shero

IPC分类号： H02P1/00 ,  B60L3/00 ,  H02M7/529 ,  H02P27/04 ,  H02P5/34

CPC分类号： H02M7/529 ,  B60L3/0023 ,  B60L2200/26 ,  B60L2220/12

摘要： AC induction motor energized by an inverter coupled with a DC power source. Upon shutdown of the inverter because of a fault condition or a rail gap between adjacent power sources, if the motor rotating frequency is greater than a minimum frequency then a decreased motor voltage is applied to the motor and increased as a ramp over a provided time delay period, after which the motor slip is controlled to provide a desired motor torque that is increased over a subsequent time delay period.

摘要翻译： 交流感应电动机由与直流电源耦合的逆变器供电。 由于相邻电源之间的故障状态或轨道间隙而关闭变频器时，如果电机转速大于最小频率，则电机电压降低到电机上，并在提供的时间延迟时以斜坡增加 之后，控制电动机滑差以提供在随后的时间延迟周期内增加的期望的电动机转矩。

公开(公告)号：US4644243A

公开(公告)日：1987-02-17

申请号：US774125

申请日：1985-09-09

申请人： Edward J. Bialek

发明人： Edward J. Bialek

IPC分类号： H02M7/529 ,  H02P23/00 ,  H02P5/40

CPC分类号： H02P23/0077 ,  H02M7/529

摘要： In a static DC/AC converter sequentially fired in relation to the frequency of the AC power supply, gating is provided by down counters which are instantly advanced, or delayed, in accordance with a change in the reference frequency, thereby to provide instantaneous firing angle adjustment.

摘要翻译： 在相对于交流电源的频率顺序点火的静态DC / AC转换器中，根据参考频率的变化立即提前或延迟的向下计数器提供门控，由此提供瞬时触发角 调整。

公开(公告)号：US4466070A

公开(公告)日：1984-08-14

申请号：US362248

申请日：1982-03-26

申请人： Ulf Claussen

发明人： Ulf Claussen

IPC分类号： H02M7/529 ,  H02P13/20 ,  H02M1/08

CPC分类号： H02M7/529

摘要： A control unit for DC-to-AC inverter having an addressing memory which is loaded with an addressing table by a microprocessor for a respective frequency range of the inverter output voltage. In the addressing table, a predetermined portion of information is provided for each addressing combination of the switches of the DC-to-AC inverter, the portion of information containing the addressing combination itself and the number of clock pulses for which the addressing combination will be present. The portions of information are interrogated at different speeds depending upon the desired inverter output frequency. A frequency divider is addressed by a clock generator, the frequency divider receiving a division factor from the memory, the division factor being inversely proportional to the desired DC-to-AC inverter output frequency. The output signal of the divider decrements a counter which is loaded with a number of clock pulses associated with the respective addressing combination. Upon achieving a zero count, a new portion of information of the addressing table is provided at the output of the memory.

摘要翻译： 一种用于DC到AC逆变器的控制单元，具有寻址存储器，该寻址存储器由微处理器为逆变器输出电压的各个频率范围加载寻址表。 在寻址表中，为DC-AC逆变器的开关的每个寻址组合提供预定部分的信息，包含寻址组合本身的信息部分和寻址组合将被写入的时钟脉冲数 当下。 根据所需的逆变器输出频率，以不同的速度询问信息的部分。 分频器由时钟发生器寻址，分频器从存储器接收分频因子，分频因数与期望的DC-AC逆变器输出频率成反比。 分频器的输出信号递减计数器，该计数器装载有与相应寻址组合相关联的多个时钟脉冲。 在实现零计数时，在存储器的输出处提供寻址表的新部分信息。

公开(公告)号：US4427933A

公开(公告)日：1984-01-24

申请号：US315600

申请日：1981-10-30

申请人： Paul W. Wagener ,  Loren F. Stringer

发明人： Paul W. Wagener ,  Loren F. Stringer

IPC分类号： H02M1/08 ,  H02M7/529 ,  H02P23/00 ,  H02P25/02 ,  H02P5/40

CPC分类号： H02P23/0077 ,  H02M7/529 ,  H02P25/024

摘要： A synchronous motor drive includes an inverter gating control system using three counters wherein two counters respond to 180.degree. apart zero crossings for providing units of time in terms of clock units, and the third counter is at a computed time interval preset with a count to be counted down to derive the remaining time which is to elapse until a predetermined firing angle is reached, at which time firing of the thyristor of the inverter is triggered.

摘要翻译： 同步电动机驱动器包括使用三个计数器的逆变器门控控制系统，其中两个计数器响应于180度分开的过零点，以提供时钟单位的时间单位，并且第三计数器处于计算的时间间隔，其中计数为 向下计数以得出待到达预定触发角的剩余时间，此时触发逆变器的晶闸管。

公开(公告)号：US4409535A

公开(公告)日：1983-10-11

申请号：US359615

申请日：1982-03-18

申请人： Mark R. Hickman

发明人： Mark R. Hickman

IPC分类号： H02M7/529 ,  H02P5/34

CPC分类号： H02M7/529

摘要： A motor pulse width modulation control technique employing gated asynchronous carrier modulation including establishing a repetitive modulation signal along with the generation of a carrier frequency signal at a frequency greater than the frequency of the modulation signal. The carrier frequency signal is gated at a gating rate less than the frequency of the carrier frequency signal so as to provide the gated carrier frequency signal. Means are provided for modulating the gated carrier frequency signal by the aforementioned repetitive modulation signal so as to provide cyclic pulse width modulation drive signal for motor control.

摘要翻译： 一种采用门控异步载波调制的电机脉宽调制控制技术，包括建立一个重复调制信号以及以大于调制信号频率的频率产生载频信号。 载波频率信号以小于载波频率信号的频率的门控速率选通，以提供门控载波频率信号。 提供了用于通过上述重复调制信号对门控载波频率信号进行调制的装置，以提供用于马达控制的循环脉宽调制驱动信号。