公开(公告)号：WO1991009457A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006559

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, P., John ,  PATEL, Sunil ,  NG, Chai-Nam ,  NGUYEN, Vietson

IPC: H02M03/335

CPC classification number: H02M7/49

Abstract: A regulator (32) for a stepped-waveform inverter having first and second subinverters (70, 78) which produce waveforms having a variable phase displacement therebetween and a summing transformer (112) which sums the outputs of the subinverters includes circuitry (158) for detecting a deviation of a parameter of the AC output power produced by the inverter from a reference and circuitry (160) coupled to the detecting circuitry for deriving a phase command signal from the detected deviation. A comparator (208) compares the phase command signal with a ramp signal to obtain a comparison signal and circuitry (140, 144) operates the first and second subinverters responsive to the comparison signal to cause the phase displacement to vary in accordance with the phase command signal.

公开(公告)号：WO1991009456A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006552

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, P. ,  PATEL, Sunil ,  NG, CHAI-NAM

IPC: H02M03/335

CPC classification number: H02M7/49

Abstract: Previously, while stepped-waveform inverters approximate a sine wave to reduce the size of the filters needed at the output of such inverters, efficient and effective methods of controlling such inverters have heretofore been lacking. In order to overcome these drawbacks, an inverter (24) for use in a variable-speed, constant-frequency power conversion system (10) of the type used in an aircraft, for example, is provided with four subinverter pairs (30, 32, 34, 36), each of which generates a respective set of waveforms. The four subinverter pairs (30, 32, 34, 46) are connected to a summing transformer (31, 33, 35, 37) having eight sets pairs of primary windings (80, 92) and eight sets of secondary windings (90, 98) coupled to the primary windings (80, 92). A regulator (50, 52) is coupled to the output of the summing transformer (31, 33, 35, 37) and varies the phase angles between the waveforms generated by the four subinverter pairs (30, 32, 34, 36) based upon the voltage and current at the output of the summing transformer (31, 33, 35, 37) in order to regulate the voltage at the output of the summing transformer (31, 33, 35, 37).

Abstract translation: 以前，阶梯波形逆变器近似正弦波以减小这种逆变器的输出所需的滤波器的尺寸，但是迄今为止，已经缺乏控制这种逆变器的有效和有效的方法。 为了克服这些缺陷，例如在用于飞行器的类型的变速恒定频率功率转换系统（10）中使用的逆变器（24）设置有四个子逆变器对（30,32） ，34,36），其中每一个产生相应的一组波形。 四个次级逆变器对（30,32,34,46）连接到具有八组初级绕组（80,92）和八组次级绕组（90,98）的求和变压器（31,33,35,37） ）耦合到初级绕组（80,92）。 调节器（50,52）耦合到求和变压器（31,33,35,37）的输出，并且基于由四个副变换器对（30,32,34,36）产生的波形之间的相位角改变，基于 为了调整求和变压器（31,33,35,37）的输出端的电压，求和变压器（31,33,35,37）输出端的电压和电流。

公开(公告)号：WO1991009453A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006566

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, P., John ,  PATEL, Sunil ,  NG, Chai-Nam ,  NGUYEN, Vietson

IPC: H02M01/12

CPC classification number: H02M7/49

Abstract: Previously, while stepped-waveform inverters approximate a sine wave to reduce the size of filters needed at the output of such inverters, efficient and effective methods of controlling such inverters have heretofore been lacking. In order to overcome these drawbacks of previous inverters, an inverter (24) for use in a power conversion system (10) of the type used in an aircraft, for example, is provided with a first subinverter pair (30) that generates a first pair of waveforms and a second subinverter pair (32) that generates a second pair of waveforms. The two subinverter pairs (30, 32) are connected to a summing transformer (31, 33) having two pairs of primary windings (80, 92) and a plurality of secondary windings (90, 98) coupled to the primary windings (80, 92). A regulator (50, 52) is coupled to the output of the summing transformer (31, 33) and varies the phase angles between the waveforms generated by the two subinverter pairs (30, 32) based upon the voltage and current at the output of the summing transformer (31, 33) in order to regulate the voltage at the output of the summing transformer (31, 33).

Abstract translation: 以前，阶梯式波形逆变器近似正弦波以减小这种逆变器的输出所需的滤波器的尺寸，但迄今为止，缺乏控制这种逆变器的有效和有效的方法。 为了克服以前的逆变器的这些缺点，例如在飞机中使用的类型的功率转换系统（10）中使用的逆变器（24）设置有第一子逆变器对（30），其产生第一 一对波形和产生第二对波形的第二子逆变器对（32）。 两个副变压器对（30,32）连接到具有两对初级绕组（80,92）和耦合到初级绕组（80,92）的多个次级绕组（90,98）的求和变压器（31,33） 92）。 调节器（50,52）耦合到求和变压器（31,33）的输出，并且基于在输出端的电压和电流来改变由两个副变换器对（30,32）产生的波形之间的相位角 求和变压器（31,33），以便调节求和变压器（31,33）的输出处的电压。

公开(公告)号：WO1991009452A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006563

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, P., John ,  PATEL, Sunil ,  NG, Chai-Nam ,  NGUYEN, Vietson

IPC: H02M01/12

CPC classification number: H02M7/49

Abstract: Previously while stepped-waveform inverters approximate a sine wave to reduce the size of filters needed at the output of such inverters, efficient and effective methods of controlling such inverters have heretofore been lacking. In order to overcome these drawbacks of previous inverters, an inverter (24) for use in a power conversion system (10) of the type used in an aircraft, for example, is provided with a first subinverter pair (30) that generates a first pair of waveforms, a second subinverter pair (32) that generates a second pair of waveforms, and a third subinverter pair (34) that generates a third pair of waveforms. The three subinverter pairs (30, 32, 34) are connected to a summing transformer having first, second and third transformers (31, 33, 35). A regulator (50, 51) is coupled to the output of the summing transformer (31, 33, 35) and varies the phase angles between the three pairs of waveforms generated by the three subinverter pairs (30, 32, 34) based upon the voltage and current at the output of the summing transformer (31, 33, 35) in order to regulate the voltage at the output of the summing transformer (31, 33, 35).

Abstract translation: 以前，阶梯式波形逆变器近似正弦波以减小在这种逆变器的输出端所需的滤波器的尺寸，但迄今为止，缺乏控制这种逆变器的有效和有效的方法。 为了克服以前的逆变器的这些缺点，例如在飞机中使用的类型的功率转换系统（10）中使用的逆变器（24）设置有第一子逆变器对（30），其产生第一 一对波形，产生第二对波形的第二子逆变器对（32）和产生第三对波形的第三子反转器对（34）。 三个副变换器对（30,32,34）连接到具有第一，第二和第三变压器（31,33,35）的求和变压器。 调节器（50,51）耦合到求和变压器（31,33,35）的输出，并且基于所述三个副变换器对（30,32,34）产生的三对波形之间的相位角改变 为了调整求和变压器（31,33,35）输出端的电压，求和变压器（31,33,35）输出端的电压和电流。

公开(公告)号：WO1994001923A1

公开(公告)日：1994-01-20

申请号：PCT/US1993006311

申请日：1993-07-02

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, P., John ,  NGUYEN, Vietson, M. ,  PATEL, Sunil ,  NG, Chai-Nam

IPC: H02M07/5387

CPC classification number: H02M7/49 ,  H02M2001/0022

Abstract: An inverter system (24) for inverting variable input DC and providing therefrom controlled output AC including a feedforward sensor for sensing a variable parameter of the input DC (22a, 22b), a feedback AC sensor (50) for sensing the controlled output AC (58a, 58b, 58c) and an inverter controller (52) responsive to the variable parameter of the input DC (22a, 22b) and to the controlled output AC (58a, 58b, 58c) for regulating the magnitude of the controlled output AC (58a, 58b, 58c).

Abstract translation: 一种逆变器系统（24），用于反转可变输入DC并从其提供控制的输出AC，其包括用于感测输入DC（22a，22b）的可变参数的前馈传感器，用于感测受控输出AC的反馈AC传感器（50） 58a，58b，58c）和响应于输入DC（22a，22b）的可变参数和控制输出AC（58a，58b，58c）的逆变器控制器（52），用于调节受控输出AC 58a，58b，58c）。

公开(公告)号：WO1993023916A1

公开(公告)日：1993-11-25

申请号：PCT/US1993004655

申请日：1993-05-13

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, P. ,  NG, Chi-Nam ,  PATEL, Sunil ,  NGUYEN, Vietson, M.

IPC: H02M07/5375

CPC classification number: H02M7/49 ,  H02M1/36

Abstract: The present invention is directed to an arrangement for limiting inrush current in an inverter system (10) having inverter switches (82a-c, 84a-c, 94a-c, 96a-c) for inverting DC to AC, a soft-start pulse supply circuit (150) for supplying soft-start pulses to the inverter switches (82a-c, 84a-c, 94a-c, 96a-c) to begin the inverter process, and a controller (110-118) for supplying normal control pulses to the inverter switches (82a-c, 84a-c, 94a-c, 96a-c) after a predetermined amount of time. The soft-start pulses have a higher frequency than the normal control pulses. The soft-start pulses may have a substantially constant duty cycle and amplitude and the frequency of the soft-start pulses also may be substantially constant.

Abstract translation: 本发明涉及一种用于限制具有用于将DC转换为AC的逆变器开关（82a-c，84a-c，94a-c，96a-c）的逆变器系统（10）中的浪涌电流的装置，软启动脉冲 用于向逆变器开关（82a-c，84a-c，94a-c，96a-c）提供软启动脉冲以开始逆变器处理的供电电路（150），以及用于提供正常控制的控制器（110-118） 经过预定的时间后，向逆变器开关（82a-c，84a-c，94a-c，96a-c）发送脉冲。 软启动脉冲具有比正常控制脉冲更高的频率。 软启动脉冲可以具有基本恒定的占空比和幅度，并且软启动脉冲的频率也可以是基本恒定的。

公开(公告)号：WO1991009458A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006565

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, P. ,  PATEL, Sunil ,  NG, Chai-Nam ,  NGUYEN, Vietson

IPC: H02M03/335

CPC classification number: H02M7/49

Abstract: Prior hybrid power systems which develop AC and DC power for AC and DC loads, respectively, have not separately regulated the AC and DC outputs, and hence load conditions on one of the outputs can adversely effect the loads connected to the other output. In order to overcome this problem, a hybrid power system which converts variable-frequency power developed by a brushless generator (12) into DC power which is supplied to a DC load and constant-frequency AC power which is supplied to an AC load includes an AC/DC converter (20) coupled to a main generator portion armature winding (64a-64c) of the generator which converts the variable-frequency power produced by the generator into the DC power and a DC/AC converter (24) coupled to the AC/DC converter which converts the DC power into the constant-frequency AC power. A first regulator (30) is coupled to an exciter portion field winding of the generator for supplying current thereto in dependence upon a parameter of the DC power to maintain such parameter substantially at a regulated DC value. A second regulator (32) is coupled to the DC/AC converter for controlling same in accordance with a parameter of the constant-frequency AC power to maintain such parameters substantially at regulated AC value.

Abstract translation: 分别为交流和直流负载开发交流和直流电力的混合动力系统分别没有分别调节交流和直流输出，因此其中一个输出上的负载条件可能不利地影响连接到另一个输出的负载。 为了克服这个问题，将由无刷发电机（12）开发的可变频率功率转换为直流负载的DC电力和提供给AC负载的恒定频率AC电力的混合动力系统包括： 耦合到发电机的主发电机部分电枢绕组（64a-64c）的AC / DC转换器（20），其将由发电机产生的可变频率功率转换成DC电力;以及DC / AC转换器（24） AC / DC转换器，其将DC功率转换为恒定频率AC电力。 第一调节器（30）耦合到发电机的激励器部分励磁绕组，用于根据直流电力的参数提供电流，以将该参数保持在稳定的直流值。 第二调节器（32）耦合到DC / AC转换器，用于根据恒定频率AC功率的参数进行控制，以将这些参数保持在稳定的AC值。