专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2006197692A Control device of electric vehicle and electric vehicle 有权
标题翻译：电动车和电动车的控制装置
公开(公告)号：JP2006197692A
公开(公告)日：2006-07-27
申请号：JP2005005390
申请日：2005-01-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OI KENTARO , MIYAKE WATARU , ISHIDA SEIJI
IPC分类号： H02P27/06 , B60L3/00 , B60L9/18
摘要： PROBLEM TO BE SOLVED: To effectively suppress a specified frequency component generated in a retrace line current. SOLUTION: The rotational angular speed ωr of a motor is detected, a torque correction command ΔT* is operated on the basis of the specified frequency component included in the ωr, a d-axis voltage correction command dVd*, a q-axis voltage correction command dVq*, a q-axis current correction command dIq*, and an angular speed correction command dω1* are operated on the basis of the torque correction command ΔT*, these correction commands are added to a d-axis voltage command, a q-axis voltage command, a q-axis current command, and an angular speed command, respectively, and a DC current of a first power converter is controlled. By this, the specified frequency component included in the DC current is canceled, and the specified frequency component is effectively suppressed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：有效地抑制在回扫线电流中产生的指定频率分量。解决方案：检测电动机的旋转角速度ωr，基于包括在ωr中的指定频率分量，d轴电压校正命令dVd *，q轴电压校正命令dVd *，q- 轴电压校正命令dVq *，q轴电流校正指令dIq *和角速度校正指令dω1*根据转矩校正指令ΔT*进行动作，将这些校正指令加到d轴电压指令，q轴电压指令，q轴电流指令和角速度指令，并且控制第一功率转换器的直流电流。由此，包含在直流电流中的指定频率分量被消除，并且有效地抑制了指定的频率分量。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JPH06209579A POWER CONVERTER 失效
公开(公告)号：JPH06209579A
公开(公告)日：1994-07-26
申请号：JP32660193
申请日：1993-12-24
申请人： HITACHI LTD
发明人： TANAMACHI TOKUNOSUKE , NAKAMURA KIYOSHI , NAKADA KIYOSHI , TSUTSUI YOSHIO , MIYAKE WATARU , SUZUKI KATSUAKI
IPC分类号： H02M7/48 , H02P27/06 , H02P7/63
摘要： PURPOSE:To improve suppression accuracy of beat phenomenon by detecting the pulsation of DC input voltage due to rectification of a converter and then adjusting the output frequency of an inverter accordingly. CONSTITUTION:The DC component E0 of an inverter input voltage E is detected by a detection means 142 and the pulsating component DELTAE0 of the input voltage of an inverter 4 is detected by a detection means 141 with a specific phase difference alpha. The output DELTAE0' of the detection means 141 is divided by the output E0 of the detection means 142 using a division means 143 to obtain the degree of voltage pulsation DELTAE0'/E0. Further, the output of the division means 143 is multiplied by the output f0 of an addition/subtraction means 9 using a multiplication means 144 for outputting an adjusting component DELTAf0 (=DELTAE0'f0/E0) of inverter frequency, thus improving the suppression phenomenon of beat phenomenon.

3. 发明专利

JPS62225162A PHASE CONTROL CIRCUIT 失效
公开(公告)号：JPS62225162A
公开(公告)日：1987-10-03
申请号：JP6721986
申请日：1986-03-27
申请人： HITACHI LTD
发明人： TSUTSUMI KAZUYA , TAMURA KAORU , MIYAKE WATARU
IPC分类号： H02M1/08
摘要： PURPOSE:To enable phase angle control in wide range, by a method wherein phase of sawtooth wave voltage to synchronous power voltage is varied by a signal phase regulating circuit and control range of the phase angle is varied. CONSTITUTION:A delay circuit 5 for delaying sawtooth wave voltage is inserted between a sawtooth wave generator 3 and a comparator 6, and the delay time of the delay circuit 5 is controlled by a frequency changing circuit 4 in response to frequency changing signal. When a power conversion device is at power source of AC voltage 60 Hz, the delay circuit 5 supplies the sawtooth wave voltage without delaying to the comparator 6.

4. 发明专利

JPS61285078A CONTROLLER OF POWER CONVERTER 失效
公开(公告)号：JPS61285078A
公开(公告)日：1986-12-15
申请号：JP12560285
申请日：1985-06-10
申请人： HITACHI LTD
发明人： NARITA HIROSHI , NAKAMURA KIYOSHI , KUROTAKI YOSHIMI , MIYAKE WATARU
IPC分类号： B60L9/24 , H02M7/48
摘要： PURPOSE:To reduce the loss of an inverter by controlling to vary the DC voltage of a smoothing condenser in response to the operating state signal of the inverter. CONSTITUTION:A speed signal is obtained by a tachometer generator TG mounted in an induction motor IN, and inputs to a function generator FG. The generator FG generates a voltage pattern for variably controlling the output voltage of a PWM control converter CONV in response to a speed signal. A deviation between the voltage pattern and the output of a voltage detector PTc is multiplied by the output of the detector PTs, and further compared with the output of a current detector CT. The deviation therebetween is compared by a comparator COM with a carrier, a PWM signal is generated in response to the crossing point of them, and sorted to the switch elements of the converter CONV in response to the positive and negative of the AC power source voltage.

5. 发明专利

JP2006340437A Controller for induction motor, and vehicle and vehicle system using the controller 有权
标题翻译：感应电机控制器，使用控制器的车辆和车辆系统
公开(公告)号：JP2006340437A
公开(公告)日：2006-12-14
申请号：JP2005159547
申请日：2005-05-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA SEIJI , NAKADA KIYOSHI , KOTAKE KAZUYOSHI , MIYAKE WATARU
IPC分类号： H02P5/74 , B60L9/18
CPC分类号： Y02T90/16
摘要： PROBLEM TO BE SOLVED: To accurately estimate the torque of each induction motor even if there is dispersion in diameters of wheels in the case of driving a plurality of wheels with a plurality of induction motors. SOLUTION: This controller gets the first torque of each of the above induction motors, based on the rotational speed and the output voltage of individual induction motors by a first torque operating part 13, and calculates the second torque of each of the above induction motors from the first torque and a torque command, and transmits the second torque estimated by the second torque operating part 14 to a cabin display by a communication part 16 so as to display it. The cabin display detects the dispersion of the diameters of wheels being over the tolerance from the second torque estimate. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在使用多个感应电动机驱动多个车轮的情况下，即使在车轮的直径上存在分散，也能准确地估计每个感应电动机的转矩。解决方案：该控制器基于第一转矩操作部13的各个感应电动机的转速和输出电压，得到上述各感应电动机的第一转矩，并计算上述每个感应电动机的第二转矩来自第一转矩和转矩指令的感应电动机，并且通过通信部16将由第二转矩操作部14估计出的第二转矩发送到驾驶室显示器，以便显示它。机舱显示器检测到车轮直径从第二扭矩估计超过公差的偏差。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2000032604A TROUBLE RECORDER FOR ELECTRIC CAR CONTROLLER 失效
公开(公告)号：JP2000032604A
公开(公告)日：2000-01-28
申请号：JP19697298
申请日：1998-07-13
申请人： HITACHI LTD
发明人： MIYAKE WATARU
IPC分类号： G01D9/00 , B60L3/00 , B60L3/12
摘要： PROBLEM TO BE SOLVED: To prevent a recorded significant trouble data from being erased by setting the degree of significance of a trouble data, by performing overwritting and data update when the degree of significance of a trouble having occurred newly is higher, but not performing data renewal when it is lower. SOLUTION: When a trouble occurs, a degree of significance corresponding to the content of that trouble is set 15. The degree of significance of the trouble occurring now is compared 16 with a degree of significance recorded already. And if the degree of significance of a trouble having occurred newly is higher, it proceeds to storage processing 17, and storage 18 is performed. On the other hand, if the degree of significance is lower, nonrecording processing 19 is performed and preparation for the next trouble is performed. Namely, recording is not performed, and a record being up until now having a higher degree of significance is left unerased, when the degree of significance of the trouble recorded already is higher than a trouble which is going to be recorded. Consequently, a trouble data having a higher degree of significance is left unerased as a record, and a significant data is prevented from going erased by overwriting.

7. 发明专利

JPH11164565A POWER CONVERTER 失效
公开(公告)号：JPH11164565A
公开(公告)日：1999-06-18
申请号：JP28219898
申请日：1998-10-05
申请人： HITACHI LTD
发明人： TANAMACHI TOKUNOSUKE , NAKAMURA KIYOSHI , NAKADA KIYOSHI , TSUTSUI YOSHIO , MIYAKE WATARU , SUZUKI KATSUAKI
IPC分类号： H02M7/48 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To suppress a beating phenomenon of an inverter caused by a ripple component of rectified voltage of a converter, by detecting a ripple of DC input voltage of the inverter, and adjusting a pulse width of the output voltage of the inverter according to the detected ripple. SOLUTION: In a power converter wherein AC from an AC power supply 1 is inputted to a pulse width modulation inverter 4 through a converter 2 and a filter capacitor 3 and then is converted into AC of variable voltage and variable frequency and is outputted to an induction motor 5, a means 14 for adjusting the output frequency of the inverter is installed. And, a degree of a voltage ripple ΔE0 /E0 of the input voltage E of the inverter 4 is found, and then the aΔE0 /E0 is multiplied by a reference command value f0 of the output frequency by means of a multiplication means 144 to obtain an adjustment Δf0 to the output frequency and then a frequency command value 'f' is obtained from an adding means 15 and it is inputted to a modulating means 7. Then, the modulation means 7 generates a PWM modulation signal based on the frequency command value 'f' and controls the operation of a control switching element of the inverter 4 through a gate signal processing circuit 6 by the PWM modulation signal.

8. 发明专利

JPH09294375A CAPACITOR CAPACITANCE JUDGING APPARATUS FOR POWER CONVERTER 失效
公开(公告)号：JPH09294375A
公开(公告)日：1997-11-11
申请号：JP10682396
申请日：1996-04-26
申请人： HITACHI LTD
发明人： NAKADA KIYOSHI , MIYAKE WATARU
IPC分类号： G01R27/26 , H02H7/16 , H02M7/06 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To make it possible to judge reduction in capacitor capacitance with stability and accuracy regardless of external circuit conditions, by detecting fluctuation in the alternating-current voltage of the capacitor in the direct- current intermediate circuit in a power converter, and comparing the result of the detection with reference value. SOLUTION: The alternating-current component of capacitor voltage is detected by using an alternating-current component detector 81, and its amplitude is detected by using a maximum value detector 82. A first comparator 83 compares the result of the detection with a reference value 1, or the allowable value for voltage fluctuation of amplitude ΔE determined by a specific numerical formula, and outputs '1' to output CC1 when ΔE is larger than the reference value 1 (usually, '0' is output). For the purpose the reference value 1 is set to ΔE+α1 (α1 is a specified value). When CC1 becomes '1', an indicator 91 produces display output indicating that the capacitance of the capacitor 4 has been reduced. This makes it possible to detect reduction in capacitor 4 capacitance with stability and accuracy regardless of external circuit conditions.

9. 发明专利

JPH0993702A POWER CONVERTER FOR RAILWAY VEHICLE 失效
公开(公告)号：JPH0993702A
公开(公告)日：1997-04-04
申请号：JP25241695
申请日：1995-09-29
申请人： HITACHI LTD
发明人： ITO SATORU , INARIDA SATOSHI , NAKADA KIYOSHI , MIYAKE WATARU
IPC分类号： B60L1/00 , B60L9/12
摘要： PROBLEM TO BE SOLVED: To make it possible to reduce the harmonic waves of the entire organization by providing d DC bus for connecting DC stages to each other. SOLUTION: Filter capacitors 711, 731 are connected to filter capacitors 721, 741 via a DC bus 10, and further connected to the filter capacitors 712, 732, 722, 742 of the adjacent vehicle 32 via the bus 10. Furthermore, they are connected to the filter capacitors of another vehicle via the bus 10, and eventually connected to the filter capacitors 71n, 72n, 73n, 74n of 3n of the vehicle 3. Thus, when the total sum of the outputs of the entire inverters is equal to that of the outputs of the entire converters, the outputs of the converters can be controlled by the output independent from the corresponding inverter. That is, the converter 611 and the inverter 811 may not always be equal to the outputs of both because of the DC bus 10. Accordingly, the harmonic waves of the entire organization can be reduced.

10. 发明专利

JPH06217407A CONTROLLER FOR ELECTRIC VEHICLE 失效
公开(公告)号：JPH06217407A
公开(公告)日：1994-08-05
申请号：JP464993
申请日：1993-01-14
申请人： HITACHI LTD
发明人： KISHIMOTO KOJI , MIYAKE WATARU
IPC分类号： B60L9/16
摘要： PURPOSE:To prevent re-idling or re-slip by detecting re-idling or re-slip based on the variation of the r.p.m. of a main motor, temporally integrating the difference between a reference train speed and the speed of idling/slip shaft, and then lowering the torque of the main motor depending on the extent of idling/ slip thereby varying the time to be elapsed before readhesion. CONSTITUTION:An output from a main motor r.p.m. detecting section 1 is fed to an idling/slip detecting section 5 where it is compared with a reference train speed by means of comparators 12 thus setting a flip-flop(FF) 13. An integrator 16 integrates the idling/slip speed and when a time To set in a holding time setting section 17 expires, a slip frequency control section 18 increases the slip frequency upto a value prevailing before turn ON of the comparator 12. Finally, a comparator 15 compares a current command value 7 of a main motor 1 with a feedback value of main motor current and when the feedback value exceeds a command value, the FF13 is reset to turn OFF its output Q thus returning a switch 14 to normal slip frequency output.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式