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1. 发明专利

JP2013225963A Drive system of electric railway vehicle 有权
标题翻译：电动车辆驱动系统
公开(公告)号：JP2013225963A
公开(公告)日：2013-10-31
申请号：JP2012096380
申请日：2012-04-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMADA MOTOMI , ARAKI DAIJIRO , MIZOBUCHI TETSUYA , TERASAWA KIYOSHI
IPC分类号： B60L9/18 , B60L3/00 , H02J7/00 , H02J7/34
CPC分类号： Y02T10/7241
摘要： PROBLEM TO BE SOLVED: To enable independent traveling of an electric railway vehicle without adding a dedicated electricity storage device for traveling and charging apparatus for charging the electricity storage device.SOLUTION: A vehicle comprises a first electric power supply means (3a) for obtaining elective power from the outside and a plurality of second electric power supply means (17a, 17b) comprising an electricity storage means provided as a power supply for controlling the vehicle and a power supply for an indicator light and an emergency light or the like. When the electric power supply cannot be obtained from the first electric power supply means (3a), elective power is supplied to an inverter driving device (6a) from a part of the plurality of second electric power supply means (17a, 17b) by switching electricity storage means contactors (18a, 18b) to drive an ac motor (15a). Accordingly, independent traveling of the vehicle is performed during emergency or maintenance inspection.
摘要翻译：要解决的问题：为了使电动铁路车辆的独立行驶不增加用于行驶的专用蓄电装置和用于对蓄电装置充电的充电装置。解决方案：车辆包括用于获得选择性的第一电力供应装置（3a）多个第二电力供给装置（17a，17b）包括设置为用于控制车辆的电源的蓄电装置和用于指示灯和应急灯等的电源。当不能从第一电力供给装置（3a）获得电力供给时，通过切换从多个第二电力供给装置（17a，17b）的一部分向逆变器驱动装置（6a）提供选择电力蓄电装置是指驱动交流电动机（15a）的接触器（18a，18b）。因此，在紧急或维护检查期间执行车辆的独立行驶。

2. 发明专利

JP2009183078A Drive system of electric vehicle 审中-公开
标题翻译：电动车驱动系统
公开(公告)号：JP2009183078A
公开(公告)日：2009-08-13
申请号：JP2008020407
申请日：2008-01-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMADA MOTOMI , HORIE SATORU , NAGASU MASAHIRO , TERASAWA KIYOSHI
IPC分类号： B60L7/12
CPC分类号： B60L11/1861 , B60L3/003 , B60L3/0046 , B60L3/0092 , B60L7/06 , B60L7/14 , B60L7/22 , B60L9/22 , B60L11/1866 , B60L11/1872 , B60L15/007 , B60L15/20 , B60L15/2009 , B60L2200/26 , B60L2210/10 , B60L2210/40 , B60L2220/12 , B60L2220/42 , B60L2240/12 , B60L2240/14 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2240/527 , B60L2240/529 , B60L2240/545 , B60L2240/547 , B60L2240/549 , B60L2270/145 , Y02T10/645 , Y02T10/648 , Y02T10/7005 , Y02T10/7044 , Y02T10/7061 , Y02T10/7216 , Y02T10/7241 , Y02T10/7275
摘要： PROBLEM TO BE SOLVED: To provide a drive system of an electric vehicle, which can enlarge a speed zone where a regeneration brake of the electric vehicle operates, and can appropriately control accumulation of power generation energy at the time of braking and supply of power to a drive device by accumulated power energy. SOLUTION: The drive system includes a first current control means 13 switching a power accumulating means 12 to serial connection in a voltage applying direction which is the same as a DC voltage acquiring means 1 or not, second current control means 8a and 51a connected to a power converting means 4 through the power accumulating means 12 between the DC voltage acquiring means 1 and the power accumulating means 12 and third current control means 8b and 51b connected to the second current control means 8a and 51a in series between the DC voltage acquiring means 1 and a ground point 101. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种电动车辆的驱动系统，其可以扩大电动车辆的再生制动器的运转速度区域，并且可以在制动和供给时适当地控制发电能量的累积通过累积的能量来驱动驱动装置。解决方案：驱动系统包括第一电流控制装置13，将蓄电装置12切换成与直流电压获取装置1相同的电压施加方向上的串联连接，第二电流控制装置8a和51a 通过直流电压获取装置1和蓄电装置12之间的蓄电装置12和连接到第二电流控制装置8a和51a的第三电流控制装置8b和51b串联连接到电力转换装置4的直流电压获取装置1和接地点101.版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2010259326A Controlling device for pwm inverter 有权
标题翻译： PWM逆变器的控制装置
公开(公告)号：JP2010259326A
公开(公告)日：2010-11-11
申请号：JP2010180086
申请日：2010-08-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUZUKI MASAHITO , TERASAWA KIYOSHI
IPC分类号： H02M7/48 , H02P27/08
摘要： PROBLEM TO BE SOLVED: To provide a carrier diffusion controlling means in a railway car that prevents increased loss in the main circuit elements of an inverter device, minimizes element-loss estimation calculation errors, reduces noise caused by electromagnetic sound, and does not adversely affect current control at a low carrier frequency. SOLUTION: A controlling device for a pulse-width modulation (PWM) inverter includes a vector control calculating section 121, a PWM control calculating section 122, a carrier frequency calculating section 123, and an element-loss estimation calculating section 124. The carrier frequency calculating section 123 includes a constant table configured by pieces of data selected discontinuously and irregularly such as that an average value of diffusion frequency ±ΔFc added to a base carrier frequency Fc0 is approximately 0. A means is provided to narrow the dispersion frequency ±ΔFc based on the carrier frequency when the base carrier frequency Fc0 is smaller than a predetermined value. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在铁路车辆中提供载波扩散控制装置，防止逆变器装置的主电路元件的损耗增加，使元件损耗估计计算误差最小化，减少由电磁声引起的噪声，并且不会对低载波频率下的电流控制产生不利影响。解决方案：用于脉冲宽度调制（PWM）反相器的控制装置包括矢量控制计算部分121，PWM控制计算部分122，载波频率计算部分123和元素损耗估计计算部分124。载波频率计算部分123包括由不连续和不定期选择的数据组成的常数表，例如添加到基本载波频率Fc0的扩散频率±ΔFc的平均值近似为0.提供了用于缩小色散频率的装置基于载波频率Fc0小于预定值时的载波频率的±ΔFc。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2000078744A Protector for main motor of vehicle 有权
标题翻译：主要电动车保护器
公开(公告)号：JP2000078744A
公开(公告)日：2000-03-14
申请号：JP26240098
申请日：1998-09-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OZAWA HIROYUKI , HORIE SATORU , TERASAWA KIYOSHI
IPC分类号： H02H7/085 , B60L3/04 , H02H7/00 , H02P27/06 , H02P7/63
CPC分类号： Y02T10/642 , Y02T10/7241
摘要： PROBLEM TO BE SOLVED: To protect a motor against burning by operating temperature rise of the motor accurately while taking account of the rotational frequency of the motor. SOLUTION: The protector for main motor of vehicle comprises a multiplier means 22 for obtaining the square of a current being fed to a motor 4 from a torque component current detecting means 7 based on an output signal therefrom, a function generating means 27 having a radiation table matching with the radiation time constant of the motor dependent on the rotational frequency of the motor, means 26 for summing and integrating output signals from the multiplier means 22 and the function generating means 27, a pulse generating means 21 for turning both output signals on/off at a specified interval, and a comparator 28 for comparing the output signal from the integrating means 26 with a preset temperature to generate an alarm output 29. The comparator 28 is set with upper and lower temperature rise limits and a recovery mode is cut when the lower limit is reached while operation of a VVVF inverter is stopped when the upper limit is reached.
摘要翻译：要解决的问题：通过在考虑到电动机的转速的情况下精确地操作电动机的温度上升来保护电动机免受燃烧。解决方案：用于车辆主电机的保护器包括乘法器装置22，用于根据来自转矩分量电流检测装置7的扭矩分量电流检测装置7获得从马达4供给的电流的平方，功能产生装置27具有辐射与马达的辐射时间常数匹配的表与马达的旋转频率匹配的装置26，用于对来自乘法器装置22和功能产生装置27的输出信号进行求和和积分的装置26，用于将两个输出信号转动的脉冲发生装置21 /指定间隔的比较器28，以及用于将来自积分装置26的输出信号与预置温度进行比较的比较器28，以产生报警输出29.比较器28设定为具有上限和下限温度上限并且恢复模式被切断当达到上限值时，当VVVF变频器的运行停止时达到下限。

5. 发明专利

JP2006174645A Controller for pwm inverter 有权
标题翻译： PWM逆变器控制器
公开(公告)号：JP2006174645A
公开(公告)日：2006-06-29
申请号：JP2004365854
申请日：2004-12-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUZUKI MASAHITO , TERASAWA KIYOSHI
IPC分类号： H02M7/48 , H02P27/08
摘要： PROBLEM TO BE SOLVED: To provide a carrier diffusion control means which prevents the increase of the loss of the main circuit element of an inverter device and also minimizes the error in element loss estimating operation and besides reduces the noise caused by electromagnetic sound and further does not exert a bad influence on current control at the time of low carrier frequency. SOLUTION: In a PWM inverter controller which is equipped with a vector control operator part 121, a PWM operation control part 123, a carrier frequency operator part 123, and an element loss estimating operator part 124, the carrier frequency operator part 121 is equipped with a constant table which is constituted of data being selected discontinuously and irregularly such that the average of diffused frequency ±ΔFc to be added to basic carrier frequency Fc0 is approximately zero, and it is further equipped with a means which narrows down the diffused frequency ±ΔFc, according to carrier frequency, in case that the basic carrier frequency Fc0 is smaller than a specified value. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种载波扩散控制装置，其防止逆变器装置的主电路元件的损耗增加，并且还使元件损耗估计操作中的误差最小化，并且还减少由电磁声引起的噪声并且在低载波频率时对电流控制不会产生不良影响。解决方案：在装备有矢量控制运算器部分121，PWM运算控制部分123，载波频率运算器部分123和元件损耗估计运算器部分124的PWM逆变器控制器中，载波频率运算器部分121 配备有由不连续且不规则地选择的数据构成的常数表，使得要添加到基本载波频率Fc0的扩散频率±ΔFc的平均值近似为零，并且还具有使扩散的频率变窄的装置在基本载波频率Fc0小于指定值的情况下，根据载波频率的频率±ΔFc。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2003284353A Power converter 有权
标题翻译：电源转换器
公开(公告)号：JP2003284353A
公开(公告)日：2003-10-03
申请号：JP2003029136
申请日：2003-02-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OZAWA HIROYUKI , HORIE SATORU , TERASAWA KIYOSHI
IPC分类号： H02H3/16 , H02H7/04 , H02M7/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To prevent an overcurrent that is caused by the superposition of an exciting rush current and a short-circuit current, when an AC breaker at the power source side of a transformer is opened and closed again later on the occurrence of a ground fault to a power converter. SOLUTION: This power converter is provided with: a single-phase converter 5 that converts an AC into a DC; first and second contactors 9, 7 that connect a single-phase AC power source to both terminals of the AC side of the converter; a filter capacitor 11 connected to the converter; a box 60 storing the first and second contactors, the converter and the capacitor; a means 13 that grounds one terminal of the DC side of the converter and the box; a resistor 6 parallel to the second contactor; and a ground relay 53 that detects a current that flows from one terminal of the DC side of the converter to the ground. Charging of the capacitor from the AC power source is performed in a closing sequence, in which the second contactor is closed in a prescribed period of time after the first contactor is closed, and in a breaking sequence in which the first and second contactors are broken roughly simultaneously responding to the output of the relay when this relay operates. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题为了防止由激励冲击电流和短路电流的叠加引起的过电流，当变压器的电源侧的交流断路器在以后再次打开和关闭时发生电源转换器的接地故障。解决方案：该电源转换器具有：将AC转换为DC的单相转换器5; 第一和第二接触器9,7，其将单相AC电源连接到转换器的AC侧的两个端子; 连接到转换器的滤波电容器11; 存储第一和第二接触器，转换器和电容器的盒子60; 将转换器的直流侧的一个端子和箱体接地的装置13; 平行于第二接触器的电阻器6; 以及接地继电器53，其检测从转换器的DC侧的一个端子流到地的电流。从交流电源对电容器进行充电是以关闭顺序执行的，其中第二接触器在第一接触器闭合之后的规定时间段内闭合，并且以第一和第二接触器断开的断路顺序当继电器工作时，大致同时响应继电器的输出。版权所有（C）2004，JPO

7. 发明专利

JPH10229683A CONTROLLER OF BRAKE CHOPPER 失效
公开(公告)号：JPH10229683A
公开(公告)日：1998-08-25
申请号：JP4490597
申请日：1997-02-14
申请人： HITACHI LTD
发明人： TERASAWA KIYOSHI , HORIE SATORU , OZAWA HIROYUKI
IPC分类号： B60L3/00 , B60L7/22 , B60L9/16 , H02M3/155 , H02M7/155 , H02M7/48 , H02M7/72
摘要： PROBLEM TO BE SOLVED: To limit a regenerated power or a regenerated current to an aerial line, using a brake chopper, without interferring with the DC voltage control of a converter, in an electric rolling stock which uses AC as power. SOLUTION: A power converter is composed of a converter 4 connected to an AC power source, an inverter 2 connected to a motor, and a series body composed of a brake resistor 7 and a brake chopper 6, connected between the positive and negative DC connections between the converter and the inverter. The converter controls the brake chopper by a circulation factor γ, which is operated based on the regenerated power value PB, obtained by subtracting a regenerated power limit value PR* for the aerial line from an operated motor regenerated power PMM, consumes a regenerated power value PB in the brake resistor, and returns the remaining regenerated power PR* to the aerial line by the converter. The brake chopper is controlled, based on the power consumption of the brake resistor, so that the regenerated power or the regenerated current for the aerial line can be limited, with the converter continues perform to the control of a DC circuit voltage.

8. 发明专利

JPH08182342A POWER CONVERTER 失效
公开(公告)号：JPH08182342A
公开(公告)日：1996-07-12
申请号：JP33583994
申请日：1994-12-21
申请人： HITACHI LTD
发明人： TERASAWA KIYOSHI , ITO SATORU
IPC分类号： H02M7/12 , H02M7/155 , H02M7/483 , H02M7/5387 , H02M7/48
摘要： PURPOSE: To provide a power converter which has a capacity and function equivalent to those of a power converter using elements with the same loss characteristic and is suitable for reducing the loss of the whole converter. CONSTITUTION: A power converter is constituted by using elements with different loss characteristics on a phase bases, such as low on-loss elements GTO3 and GTO4 and low switching-loss elements IGBT5-IGBT8 and constituting the x-phase constituted of the GTOs in two-level output and y-phase constituted of the IGBTs in three-level output, and then, changing the number of output levels of each phase. The low on-loss elements are switched to each other by using long-period signals based on the reference wave of output voltage and the low switching-loss elements are switched to each other at high speeds by performing PWM control. Therefore, the withstand voltages of the elements can be used efficiently and the distortion of the output waveform of the converter resulting from the x-phase constituted of the low on-loss elements can be corrected by performing PWM control, because the element loss in each phase can be reduced and the withstand voltage in each phase can be made equal to that in another phase.

9. 发明专利

JPH11235039A POWER CONVERSION APPARATUS 失效
公开(公告)号：JPH11235039A
公开(公告)日：1999-08-27
申请号：JP2950098
申请日：1998-02-12
申请人： HITACHI LTD
发明人： OZAWA HIROYUKI , HORIE SATORU , TERASAWA KIYOSHI
IPC分类号： H02H3/16 , B60L9/16 , H02M7/06 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To prevent over current in a transformer in which an exciting rush current and a ground current are superimposed, by opening an AC circuit breaker and at least any one of first and second contactors depending on a detected value of grounded relay for detecting a current flowing from one end of DC side of single phase converter to the ground. SOLUTION: When ground accident is generated between a secondary coil 5 and a second contactor 7, a ground relay 53 detects a ground current to open an AC circuit breaker 2 and first and second contractor 9, 7. Then, a ground current is cut out. Thereafter, when operation is started again under the condition that the grounded area is not yet removed, an AC circuit breaker 2 is turned ON. In this timing, the secondary coil 5 of the transformer 3 is not yet turned on by the first and second contractors to maintain the open condition. Only an exciting rush current flows to the primary coil of the transformer 3. Thereafter, when the first contactor 9 is turned on, a ground current flows again in the same path and the second coil is grounded but the rush current is attenuated to disappear and therefore it does not flow simultaneously with the short-circuit current.

10. 发明专利

JPH104626A DEVICE FOR DISCRIMINATING CAPACITANCE OF CAPACITOR FOR THREE-LEVEL POWER CONVERTER 失效
公开(公告)号：JPH104626A
公开(公告)日：1998-01-06
申请号：JP15369996
申请日：1996-06-14
申请人： HITACHI LTD
发明人： NAKADA KIYOSHI , TERASAWA KIYOSHI , SAITO HIDEJI
IPC分类号： H02H7/12 , G01R31/26 , H02H20060101 , H02H7/16 , H02M7/00 , H02M7/48 , H02M7/483 , H02M7/5387 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To stably discriminate the drop in the capacitance of a capacitor with high accuracy, by comparing the detected alternating voltage fluctuation at an intermediate potential point of a voltage-dividing capacitor with a reference value. SOLUTION: A capacitor capacitance-discriminating circuit 6 is constituted of an AC component detector 61 which detects the AC component of a neutral point voltage, maximum value detector 62 which detects the maximum amplitude value of the AC component, a first comparator 63, a second comparator 64, and a memory 65 in which the hysteresis of the amplitude value of an AC voltage is recorded. The detector 61 detects the AC component, contained in the neutral point voltage, and the detector 62 detects the maximum amplitude value of the neutral point voltage and, at the same time, amplitude value of the neural point voltage in the operating state of a three-level power converter which changes from moment to moment. The comparator 63 compares the detected result of the detector 62 with the reference allowable value 1 of a modulation rate ΔE and, when the result is larger than the value 1, outputs '1' to an output CC1 and a display 7 displays that the capacitance of a capacitor has become lower, when the CC1 becomes '1'. Therefore, the capacitance of the capacitor can be discriminated stably with high accuracy without being affected by the condition of an external circuit.

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