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1. 发明申请

WO2003017463A1 COMBINED MOTOR DRIVE AND CURRENT SENSING CIRCUIT 审中-公开
标题翻译：组合电机驱动和电流感应电路
公开(公告)号：WO2003017463A1
公开(公告)日：2003-02-27
申请号：PCT/US2002/026596
申请日：2002-08-20
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： TAKAHASHI, Toshio , FANG, Min
IPC分类号： H03B19/00
CPC分类号： H02M7/53803 , H02M2001/0009
摘要： A sample and hold circuit (28) for receiving a signal comprising a plurality of pulses at node LS from a sensing circuit (ru) and a circuit for supplying a timing signal (26) for the sample and hold circuit and the sample and hold circuit outputs a sinusoidal signal at the output node IFBU.
摘要翻译：一种用于从感测电路（ru）接收包括在节点LS处的多个脉冲的信号的采样保持电路（28）和用于提供采样和保持电路的定时信号（26）的电路以及采样和保持电路在输出节点IFBU输出正弦信号。

2. 发明申请

WO2005120202A2 LOW SWITCHING FREQUENCY POWER FACTOR CORRECTION CIRCUIT 审中-公开
标题翻译：低开关频率功率因数校正电路
公开(公告)号：WO2005120202A2
公开(公告)日：2005-12-22
申请号：PCT/US2005/020005
申请日：2005-06-07
申请人： INTERNATIONAL RECTIFIER CORPORATION , BOCCHIOLA, Cesare , GRASSO, Massimo , TAKAHASHI, Toshio
发明人： BOCCHIOLA, Cesare , GRASSO, Massimo , TAKAHASHI, Toshio
IPC分类号： H02M1/42
CPC分类号： H02M1/4225 , H02M1/4208 , Y02B70/126
摘要： A power factor correction circuit for driving a switch of a boost type converter circuit having an AC line frequency input, comprising a sense circuit for sensing and comparing the output voltage of the boost type converter circuit to a reference voltage, a circuit responsive to the output of the sense circuit for providing a drive signal for driving the switch, wherein the drive signal comprises a pulsed signal comprising a pulse grouping during each half cycle of the AC line frequency comprising at least one pulse wherein the number of pulses and frequency of the pulses of the pulse grouping changes with the output of the sense circuit up to a threshold value with the pulse width of the pulses being substantially constant; and when the output of the sense circuit has reached the threshold value, the pulse width of the pulses of the pulse grouping are varied in accordance with the output of the sense circuit.
摘要翻译：一种用于驱动具有AC线路频率输入的升压型转换器电路的开关的功率因数校正电路，包括用于感测和比较升压型转换器电路的输出电压与参考电压的感测电路，响应于输出的电路用于提供用于驱动开关的驱动信号的感测电路，其中所述驱动信号包括脉冲信号，所述脉冲信号包括在包括至少一个脉冲的每个半周期期间的脉冲分组，其中脉冲数和脉冲频率脉冲组合的脉冲宽度随着脉冲宽度基本恒定而随着感测电路的输出而变化到阈值，并且当感测电路的输出达到阈值时，脉冲组合的脉冲的脉冲宽度根据感测电路的输出而变化。

3. 发明申请

WO2004012238A2 POWER TRANSFER SYSTEM WITH REDUCED COMPONENT RATINGS 审中-公开
标题翻译：具有减少组件额定值的电力传输系统
公开(公告)号：WO2004012238A2
公开(公告)日：2004-02-05
申请号：PCT/US2003/023835
申请日：2003-07-29
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： LI, Yong, P. , TAKAHASHI, Toshio
IPC分类号： H01L
CPC分类号： H02M7/5387 , H02P23/26 , H02P2201/15 , Y02P80/112
摘要： A power inverter control adjusts input power to track with output power to reduce energy handling requirements for an inverter DC bus. Input power to the power inverter circuit is measured and compared with a measurement of inverter output power. The comparison result is applied to a power factor correction circuit to adjust input power to track with output power, while obtaining a good power factor for the power inverter circuit. The energy requirements and ripple voltages or ripple currents on the DC bus are reduced, leading to a reduction in rating specifications for passive energy storage elements on the DC bus.
摘要翻译：电源逆变器控制调节输入功率以跟踪输出功率，以减少逆变器直流总线的能量处理要求。对功率逆变器电路的输入功率进行测量，并与变频器输出功率的测量值进行比较。比较结果应用于功率因数校正电路，以调整输入功率以跟踪输出功率，同时为功率逆变器电路获得良好的功率因数。 DC总线上的能量需求和纹波电压或纹波电流降低，导致直流母线上被动能量存储元件的额定值规格降低。

4. 发明申请

WO2006088821A2 SAFETY INTERLOCK AND PROTECTION CIRCUIT FOR PERMANENT MAGNET MOTOR DRIVE 审中-公开
标题翻译：永磁电机驱动的安全互锁和保护电路
公开(公告)号：WO2006088821A2
公开(公告)日：2006-08-24
申请号：PCT/US2006/005092
申请日：2006-02-14
申请人： INTERNATIONAL RECTIFIER CORPORATION , GALLI, Giovanni , TAKAHASHI, Toshio
发明人： GALLI, Giovanni , TAKAHASHI, Toshio
IPC分类号： H02P21/00
CPC分类号： D06F37/42 , H02P25/024 , H02P29/0241
摘要： A circuit for protecting against controller failure wherein the controller provides control signals for controlling a DC to AC inverter fed by a DC bus and driving a permanent magnet motor, the circuit comprising a first circuit for monitoring the DC bus voltage and, in the event the DC bus voltage exceeds a first threshold due to a counter EMF generated by the motor, for producing a signal to the controller to provide a switch state to the inverter whereby the counter EMF is dissipated substantially in a motor circuit resistance of the permanent magnet motor as a result of a short circuit condition provided by the switch state of the inverter, thereby preventing the DC bus voltage of the inverter from exceeding the first threshold and causing the permanent magnet motor speed to be reduced.
摘要翻译：一种用于防止控制器故障的电路，其中所述控制器提供用于控制由DC总线馈送的DC至AC逆变器并且驱动永磁电动机的控制信号，所述电路包括用于监视DC总线电压的第一电路，直流母线电压由于电动机产生的反电动势而超过第一阈值，用于向控制器产生信号以向变频器提供开关状态，从而使逆电动势基本上以永磁电动机的电动机回路电阻耗散是由逆变器的开关状态提供的短路状态的结果，从而防止逆变器的直流母线电压超过第一阈值，并且使永磁电动机的速度降低。

5. 发明申请

WO2004099885A2 MULTI-AXIS AC SERVO CONTROL SYSTEM AND METHOD 审中-公开
标题翻译：多轴AC伺服控制系统及方法
公开(公告)号：WO2004099885A2
公开(公告)日：2004-11-18
申请号：PCT/US2004/014133
申请日：2004-05-05
申请人： INTERNATIONAL RECTIFIER CORPORATION , TAKAHASHI, Toshio
发明人： TAKAHASHI, Toshio
IPC分类号： G05B
CPC分类号： G05B19/19 , G05B2219/42238 , G05B2219/50216
摘要： A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on a system clock signal to permit control parameters of the selected axis to be processed to control the selected motor drive axis. The single unit PWM control mechanism eliminates complex and costly multiple axis networks typically associated with independent servo motor controls for each axis in a multi-axis system. A single PWM unit implementation also permits the reduction of components for closed loop current control and closed loop velocity control in the multi-axis servo control system.
摘要翻译：多轴伺服控制器实现一个多任务PWM控制单元，在单个单元中为多个轴提供PWM信号。时间片机制基于系统时钟信号提供轴选择信号，以允许处理所选择的轴的控制参数以控制所选择的电动机驱动轴。单机PWM控制机构消除了复杂且昂贵的多轴网络，通常与多轴系统中的每个轴的独立伺服电机控制相关联。单个PWM单元实现还允许在多轴伺服控制系统中减少闭环电流控制和闭环速度控制的组件。

6. 发明申请

WO2003084044A2 MOTOR CURRENT RECONSTRUCTION VIA DC BUS CURRENT MEASUREMENT 审中-公开
标题翻译：电机电流重建通过直流总线电流测量
公开(公告)号：WO2003084044A2
公开(公告)日：2003-10-09
申请号：PCT/US2003/009972
申请日：2003-03-28
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： HO, Eddy, Ying Yin , TAKAHASHI, Toshio
IPC分类号： H02P
CPC分类号： H02P8/12 , G01R19/0092 , H02M7/5395 , H02M2001/0009 , H02P23/14 , H02P2205/01
摘要： A technique for reconstructing phase currents based on measurements of a DC bus current. Non-observable regions of DC bus current samples to reconstruct phase currents are reduced in size by using two phase space vector modulation. The non-observable regions can be further reduced by omitting deadtime insertions for switch actuations when output current is higher than a given threshold. Voltage command vectors in non-observable areas can be formed by two additive vectors of differing phase and magnitude to obtain an observable DC bus current reflecting phase current. The additive vectors have the same combined time average value as that of the voltage command vector.
摘要翻译：基于DC总线电流测量重建相电流的技术。通过使用两个相位空间矢量调制，大小减小了用于重构相电流的直流母线电流样本的不可观察区域。当输出电流高于给定的阈值时，通过省略开关致动器的死时间插入，可以进一步减小不可观察的区域。不可观测区域的电压指令矢量可以通过两个不同相位和幅度的加法矢量形成，以获得反映相电流的可观察直流母线电流。加权矢量具有与电压指令矢量相同的组合时间平均值。

7. 发明申请

WO2006068714A1 HIGH FREQUENCY PARTIAL BOOST POWER FACTOR CORRECTION CONTROL CIRCUIT AND METHOD 审中-公开
标题翻译：高频部分增强型功率因数校正控制电路及方法
公开(公告)号：WO2006068714A1
公开(公告)日：2006-06-29
申请号：PCT/US2005/040321
申请日：2005-11-08
申请人： INTERNATIONAL RECTIFIER CORPORATION , TAKAHASHI, Toshio , LI, Yong
发明人： TAKAHASHI, Toshio , LI, Yong
IPC分类号： G05F1/40
CPC分类号： G05F1/70 , H02M1/4225 , Y02B70/126
摘要： A circuit for providing power factor correction includes a boost converter circuit with a boost inductance and a power factor correction switch and a control circuit. The control circuit provides a pulse width modulated signal to control the on time of a PFC switch, and also includes a power factor correction pulse width modulated device receiving as inputs a rectified AC input voltage, a DC bus voltage, a signal proportional to the current through the inductor and a reference current signal. The power factor correction pulse width modulated device also includes a pulse width modulated generator operable to provide the pulse width modulated signal to control the on time of the PFC circuit and a pulse width modulated blanking device operable to provide an enable/disable signal to disable the pulse width modulated generator when predetermined conditions are met.
摘要翻译：用于提供功率因数校正的电路包括具有升压电感和功率因数校正开关以及控制电路的升压转换器电路。控制电路提供脉宽调制信号以控制PFC开关的导通时间，并且还包括功率因数校正脉宽调制装置，其接收经整流的AC输入电压，DC总线电压，与电流成比例的信号通过电感和参考电流信号。功率因数校正脉宽调制装置还包括脉宽调制发生器，其可操作以提供脉宽调制信号以控制PFC电路的开启时间，以及脉宽调制消隐装置，其可操作以提供启用/禁用信号以禁用当满足预定条件时，脉宽调制发生器。

8. 发明申请

WO2003084044A3 MOTOR CURRENT RECONSTRUCTION VIA DC BUS CURRENT MEASUREMENT 审中-公开
公开(公告)号：WO2003084044A3
公开(公告)日：2003-10-09
申请号：PCT/US2003/009972
申请日：2003-03-28
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： HO, Eddy, Ying Yin , TAKAHASHI, Toshio
IPC分类号： H02P5/34
摘要： A technique for reconstructing phase currents based on measurements of a DC bus current. Non-observable regions of DC bus current samples to reconstruct phase currents are reduced in size by using two phase space vector modulation. The non-observable regions can be further reduced by omitting deadtime insertions for switch actuations when output current is higher than a given threshold. Voltage command vectors in non-observable areas can be formed by two additive vectors of differing phase and magnitude to obtain an observable DC bus current reflecting phase current. The additive vectors have the same combined time average value as that of the voltage command vector.

9. 发明申请

WO2003058791A3 ACTIVE EMI FILTER WITH FEED FORWARD CANCELLATION 审中-公开
公开(公告)号：WO2003058791A3
公开(公告)日：2003-07-17
申请号：PCT/US2003/000314
申请日：2003-01-03
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： TAKAHASHI, Toshio , HONDA, Jun , PELLY, Brian
IPC分类号： H03B1/00
摘要： An active EMI filter for reducing common mode current in a circuit comprising: a transistor switching stage (Q1, Q2) coupled across a DC bus, a current sensor (CT) coupled to the DC bus for sensing the common mode current flowing in the DC bus and proportional to the common mode current flowing in the ground return line from or to an AC load and having an output driving the transistor switching stage; a capacitor coupling said transistor switching stage and said ground return line and wherein said current sensor and said switching stage are coupled in a feed forward arrangement whereby the switching stage is coupled across said DC bus between said rectifier and said current sensor, wherein said capacitor provides a cancellation current to said ground return line from said transistor switching stage to substantially cancel the common mode current in said ground return line.

10. 发明申请

WO2002061932A1 VOLTAGE SENSING WITH HIGH AND LOW SIDE SIGNALS FOR DEADTIME COMPENSATION AND SHUTDOWN FOR SHORT CIRCUIT PROTECTION 审中-公开
标题翻译：具有高低边信号的电压检测用于短路补偿和短路保护的关断
公开(公告)号：WO2002061932A1
公开(公告)日：2002-08-08
申请号：PCT/US2002/000288
申请日：2002-01-07
申请人： INTERNATIONAL RECTIFIER CORPORATION
发明人： TAKAHASHI, Toshio
IPC分类号： H02M3/24
CPC分类号： H02M1/32 , H02M7/538 , H02M2001/385 , H03K17/0828
摘要： A circuit (70) for sensing the voltage across a power device, such as an insulated gate bipolar transistor (IGBT) (12, 14), that provides a power signal, such as to a motor (22). Where power devices are connected in a half-bridge configuration, the sensing circuitry (70) provides low side (VL) and high side (VH) sense signals. The signals indicate respectively when voltage changes across the low side (76, 78) and high side (72, 74) power devices. If on times of the devices are separated by deadtime, one sense signal can indicate the beginning of the deadtime and the other can indicate the ending of the deadtime. The sensing circuitry (70) can provide a sense result signal indicating whether voltage across the power device is greater than a reference voltage (Vf). The sense result signal can be received both by feedback signal circuitry that provides a signal indicating when voltage changes and also by shutdown circuitry that causes driving circuitry (144, 146) to turn off the power device if it is turned on when voltage across it is greater than the reference voltage (Vf), which occurs in a short circuit condition. The circuitry can be combined in an integrated circuit (100) in which low side (VL) and high side (VH) sense signals are used both to provide voltage feedback signals and also to turn off the low (76, 78) or high side (72, 74) device if it is on when the voltage across it exceeds its reference voltage.
摘要翻译：一种电路（70），用于感测诸如绝缘栅双极晶体管（IGBT）（12,14）的功率器件之间的电压，其提供诸如电动机（22）的功率信号。在功率器件以半桥配置连接的情况下，感测电路（70）提供低侧（VL）和高侧（VH）感测信号。当低压侧（76,78）和高侧（72,74）功率器件的电压变化时，信号分别表示。如果设备的时间被死区分开，则一个感测信号可以指示死时间的开始，另一个可以指示死区的结束。感测电路（70）可以提供感测结果信号，其指示功率器件两端的电压是否大于参考电压（Vf）。感测结果信号可以由反馈信号电路接收，反馈信号电路提供指示电压何时变化的信号，并且还可以通过关断电路来使得驱动电路（144,146）在其上的电压为大于在短路状态下发生的参考电压（Vf）。电路可以组合在集成电路（100）中，其中使用低侧（VL）和高侧（VH）感测信号来提供电压反馈信号，并且还可以关断低（76,78）或高侧（72,74）器件，如果它在两端的电压超过其参考电压时导通。

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