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1. 发明专利

JP2011130564A Apparatus and method for protecting power semiconductor switch element 审中-公开
标题翻译：用于保护功率半导体开关元件的装置和方法
公开(公告)号：JP2011130564A
公开(公告)日：2011-06-30
申请号：JP2009285935
申请日：2009-12-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGINO TOMOYOSHI , SHIRAHAMA HIDEFUMI
IPC分类号： H02M1/00
CPC分类号： H02M1/32
摘要： PROBLEM TO BE SOLVED: To simply detect a short-circuited state to protect a semiconductor switch element from breakdown with a reduced possibility of malfunction, even without the presence of a current sensing switch element with respect to a short-circuit protector for semiconductor switch elements, such as IGBT, used with a high voltage.
SOLUTION: The magnitude of the current of IGBT 1 in conduction is detected as voltage information from a voltage on the collector side by dividing a voltage via a high resistor 2 and detecting resistors 3, 4. Power loss at the IGBT 1 is estimated from this voltage value and an amount of heat is estimated based on this power loss. When the estimated amount of heat exceeds a predetermined value, a gate signal voltage is gradually reduced to protect the IGBT 1.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了简单地检测短路状态以保护半导体开关元件免于故障的可能性的降低，即使不存在相对于短路保护器的电流感测开关元件，诸如IGBT的半导体开关元件用于高电压。解决方案：通过高电阻2和检测电阻3,4对电压进行分压，将IGBT 1的导通电流的大小作为从集电极侧的电压的电压信息进行检测，IGBT1的功率损耗为基于该功率损耗来估计该电压值和热量。当估计的热量超过预定值时，栅极信号电压逐渐降低以保护IGBT 1.版权所有：（C）2011，JPO＆INPIT

2. 发明专利

JP2007244102A Power supply device 审中-公开
标题翻译：电源设备
公开(公告)号：JP2007244102A
公开(公告)日：2007-09-20
申请号：JP2006063487
申请日：2006-03-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGINO TOMOYOSHI , SHIRAHAMA HIDEFUMI
IPC分类号： H02J1/00 , H02M7/48 , H02P27/06
摘要： PROBLEM TO BE SOLVED: To provide a power supply device that reduces switching loss when a voltage is changed according to the revolutions of a motor. SOLUTION: In this power supply device of this invention that supplies DC electric power to an inverter which drives the motor, a rectifier element is arranged between the positive electrode side terminal of a first DC voltage source and the inverter. Between the connection point of the DC voltage source to the rectifier element and the negative electrode side terminal of the DC voltage source, a series connection of a first switching element to the second one is arranged. Between the connection point of the first switching element to the second one and the negative side terminal of the rectifier element, a second DC voltage source is arranged. The first switching element and the second one are turned on and off according to the rotational speed of the motor to connect the first DC voltage source to the second one in series or in parallel. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种当根据电动机的转数改变电压时减小开关损耗的电源装置。解决方案：在本发明的向驱动电动机的逆变器供给直流电力的电力供给装置中，在第一直流电压源的正极侧端子与逆变器之间配置有整流元件。在DC电压源与整流元件的连接点与直流电压源的负极侧端子之间，配置第一开关元件与第二开关元件的串联连接。在第一开关元件与第二开关元件的连接点与整流元件的负极侧端子之间设置有第二直流电压源。第一开关元件和第二开关元件根据电动机的转速被接通和断开，以将第一直流电压源串联或并联连接到第二直流电压源。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007151351A System and method for driving synchronous motor 有权
标题翻译：用于驱动同步电动机的系统和方法
公开(公告)号：JP2007151351A
公开(公告)日：2007-06-14
申请号：JP2005344856
申请日：2005-11-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAKAMOTO KIYOSHI , ENDO TSUNEHIRO , SHIRAHAMA HIDEFUMI , YASUJIMA YOSHIAKI
IPC分类号： H02P6/18
CPC分类号： H02P6/185 , H02P25/03
摘要： PROBLEM TO BE SOLVED: To provide a driving apparatus of synchronous motor that has enhanced a load following performance during rotation at low speed. SOLUTION: A driving apparatus of a synchronous motor fixes all the switching devices of an inverter at off in accordance with a value of all-off control pulse signal P off outputted by a pulse generator. A motor current keeps flowing through free-wheel diodes for a predetermined period even after all the switching devices shift to the off state. Therefore, a pulse generator 15 changes an induced voltage detection signal P det to an H (high) level after the passage of the time in which a motor current drops down to zero. The terminal voltage of the motor is taken in according to the value of the induced voltage detection signal P det to acquire the induced voltage, and a rotor position is estimated. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种同步电动机的驱动装置，其在低速旋转期间提高了负载跟随性能。解决方案：同步电机的驱动装置根据由脉冲发生器输出的全关控制脉冲信号P off 的值将所有反相器的开关装置关闭。即使在所有开关装置转移到关闭状态之后，电动机电流也保持流过续流二极管一段预定时间。因此，在电动机电流下降到零的时间之后，脉冲发生器15将感应电压检测信号P det 改变为H（高）电平。根据感应电压检测信号P det 的值，接收电动机的端子电压以获取感应电压，并且估计转子位置。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2005045848A Controller and control method of ac motor and module 有权
标题翻译：交流电机与模块的控制与控制方法
公开(公告)号：JP2005045848A
公开(公告)日：2005-02-17
申请号：JP2003199570
申请日：2003-07-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOBARI KAZUAKI , ENDO TSUNEHIRO , SHIRAHAMA HIDEFUMI , ITO YOSHIKI
IPC分类号： H02M7/48
CPC分类号： H02P6/085 , H02M7/5395 , H02M2001/0009 , H02P6/34
摘要： PROBLEM TO BE SOLVED: To provide a current detection method of a permanent magnet synchronous motor capable of detecting the three-phase motor current from a DC input current with high accuracy over the entire voltage region, and to provide a controller. SOLUTION: In the control technology for detecting the three-phase motor current from a current detection value on the DC side of a PWM motor, carrier frequency of the PWM inverter is decreased automatically when the difference of PWM pulse width between two phases of a three-phase PWM inverter current of which cannot be detected is not larger than a specified value or when the output voltage from the three-phase PWM inverter is low. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种永磁同步电动机的电流检测方法，其能够在整个电压区域上以高精度从直流输入电流检测三相电动机电流，并提供控制器。
解决方案：在PWM电机直流侧电流检测值检测三相电机电流的控制技术中，PWM逆变器的载波频率自动降低，两相PWM脉冲宽度差不能检测到的三相PWM逆变电流的电流不大于规定值，或三相PWM逆变器的输出电压低时。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2005039912A Control unit of ac motor 审中-公开
标题翻译：交流电机控制单元
公开(公告)号：JP2005039912A
公开(公告)日：2005-02-10
申请号：JP2003198838
申请日：2003-07-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOBARI KAZUAKI , ENDO TSUNEHIRO , IWAJI YOSHITAKA , SHIRAHAMA HIDEFUMI
IPC分类号： H02P21/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To provide a torque control unit of a permanent magnet synchronous motor capable of realizing precision torque control even in the entire speed range, from a low speed range to a high speed range. SOLUTION: So as for the current detection values of a d-axis and a q-axis in a rotating coordinate system to agree with the current instruction value of a first d-axis and that of a first q-axis provided from a superior position, second current instruction values of the d-axis and the q-axis are calculated. The output voltage of a power converter is controlled according to the second current instruction values of the d-axis and q-axis. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使在从低速范围到高速范围的整个速度范围内，也能够提供能够实现精密转矩控制的永磁同步电动机的转矩控制单元。解决方案：为了使旋转坐标系中的d轴和q轴的当前检测值与第一d轴的当前指令值和从第一d轴提供的第一q轴的当前指令值一致计算出上述位置，d轴和q轴的第二电流指令值。功率转换器的输出电压根据d轴和q轴的第二电流指令值进行控制。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2012135100A Synchronous motor control device and control method 审中-公开
标题翻译：同步电动机控制装置及其控制方法
公开(公告)号：JP2012135100A
公开(公告)日：2012-07-12
申请号：JP2010283998
申请日：2010-12-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MAEDA DAISUKE , SHIRAHAMA HIDEFUMI , MISHIMA MITSUHIRO
IPC分类号： H02P27/06 , H02M7/48 , H02P21/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To provide a control device and a method of control thereof which drive a synchronous motor to high motor output capacity and with low vibration and low noise in an inexpensive configuration.SOLUTION: A synchronous motor control device having a three-phase inverter for outputting three-phase AC voltages of variable voltage/variable frequency for driving a synchronous motor, and motor control means for controlling the three-phase inverter further includes a harmonic setting circuit for setting a fifth harmonic content included in the synchronous motor. The motor control means includes: an output voltage computing section for the three-phase inverter; a harmonic content setting section for detecting and setting a harmonic content; a harmonic signal formation section for computing fifth harmonic voltage commands from the harmonic content set by the harmonic content setting section and the output voltages; a signal wave formation section for computing output voltage commands with the fifth harmonics superimposed from the output voltages and the fifth harmonic voltage commands; and a drive signal formation section for generating drive signals to the three-phase inverter according to the output voltage commands.
摘要翻译：要解决的问题：提供一种控制装置及其控制方法，其以便宜的构造驱动同步电动机以达到高电动机输出能力并且具有低振动和低噪声。解决方案：具有用于输出用于驱动同步电动机的可变电压/可变频率的三相AC电压的三相逆变器的同步电动机控制装置，以及用于控制三相逆变器的电动机控制装置还包括谐波用于设置包括在同步电动机中的第五谐波含量的设置电路。电动机控制装置包括：用于三相逆变器的输出电压计算部分; 谐波含量设定部，用于检测和设定谐波含量; 谐波信号形成部，用于根据由谐波含量设定部设定的谐波含量和输出电压来计算五次谐波电压指令; 信号波形成部，用于计算从输出电压和五次谐波电压指令叠加的五次谐波的输出电压指令; 以及驱动信号形成部，用于根据输出电压指令向三相逆变器产生驱动信号。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2008219954A Synchronous motor driving apparatus and method thereof 有权
标题翻译：同步电动机驱动装置及其方法
公开(公告)号：JP2008219954A
公开(公告)日：2008-09-18
申请号：JP2007049219
申请日：2007-02-28
申请人： Hitachi Information & Control Solutions Ltd , Hitachi Ltd , 株式会社日立情報制御ソリューションズ , 株式会社日立製作所
发明人： MAEDA DAISUKE , ENDO TSUNEHIRO , SHIRAHAMA HIDEFUMI , SAKURAI KENJI , HASEGAWA HIROYUKI , MISHIMA MITSUHIRO
IPC分类号： H02P6/06 , H02P21/00 , H02P27/04
CPC分类号： H02P6/16 , H02P6/153 , H02P21/06 , H02P23/26 , H02P25/03
摘要： PROBLEM TO BE SOLVED: To provide a synchronous motor driving apparatus which has inexpensive configuration, has versatility independent from a motor parameter, causes less noise and can be operated highly efficiently, and to provide a control method thereof. SOLUTION: The synchronous motor driving apparatus is provided with position sensors disposed in the synchronous motor, a current polarity detecting circuit for detecting the polarity of a current flowing through a winding of the synchronous motor, and an inverter for driving the synchronous motor. The driving apparatus is provided with a speed control section 47 for computing a motor operation speed ωr on the basis of a signal from the position sensor 9 and calculating a first voltage adjustment quantity (q-axis current command Iq*) so that the motor operation speed may approximate to the speed command ω*; and a phase control section 45 for calculating a second voltage adjustment quantity (d-axis current command Id*) so that the phase difference between a signal from the current polarity detecting circuit 13 and the position sensor signal may be a predetermined voltage. The amplitude and phase of the voltage to be applied to the synchronous motor are each adjusted on the basis of both the voltage adjustment quantities. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种具有便宜构造的同步电动机驱动装置，具有独立于电机参数的通用性，导致较少的噪声并且可以高效地操作，并且提供其控制方法。＆lt; P＆gt;解决方案：同步电动机驱动装置设置有设置在同步电动机中的位置传感器，用于检测流过同步电动机的绕组的电流的极性的电流极性检测电路和用于驱动同步电动机的逆变器。驱动装置具有速度控制部47，用于根据来自位置传感器9的信号计算电动机运转速度ωr，算出第一电压调整量（q轴电流指令Iq *），使得电动机动作速度可能接近于速度指令ω*; 以及相位控制部45，用于计算第二电压调节量（d轴电流指令Id *），使得来自电流极性检测电路13的信号与位置传感器信号之间的相位差可以是预定电压。基于两个电压调节量，分别调整施加到同步电动机的电压的幅度和相位。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2006020411A Controller of permanent magnet synchronous motor and module 有权
标题翻译：永磁同步电动机和模块的控制器
公开(公告)号：JP2006020411A
公开(公告)日：2006-01-19
申请号：JP2004195111
申请日：2004-07-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOBARI KAZUAKI , ENDO TSUNEHIRO , SHIRAHAMA HIDEFUMI , ITO YOSHIKI , AOYANAGI SHIGEHISA
IPC分类号： H02P21/00 , H02P6/08 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To provide the weakening field vector controller of a permanent magnet synchronous motor which realizes a high accuracy and high response motor torque even in a weakening field region and which is applicable commonly even in a system which performs a cheap current detection or a system which omits a pole position detector. SOLUTION: The control gain of an operating part for forming a d-axis current command is automatically corrected according to the frequency command value of the motor. Further, the d-axis current command generated at the time of no load is obtained previously by the operation, and added to the output of the operation part for forming the d-axis current command value. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供即使在弱磁场区域中实现高精度和高响应电动机转矩的永磁同步电动机的弱磁场矢量控制器，并且即使在执行廉价的系统中也可以共同使用电流检测或省略极位置检测器的系统。解决方案：根据电机的频率指令值自动校正用于形成d轴电流指令的操作部件的控制增益。此外，在空载时产生的d轴电流指令通过该操作预先获得，并且被添加到用于形成d轴电流指令值的操作部分的输出。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005218247A Driving method of inverter and inverter 有权
标题翻译：逆变器和逆变器的驱动方法
公开(公告)号：JP2005218247A
公开(公告)日：2005-08-11
申请号：JP2004023323
申请日：2004-01-30
申请人： Denso Corp , Hitachi Ltd , 株式会社デンソー , 株式会社日立製作所
发明人： MAEDA DAISUKE , SHIRAHAMA HIDEFUMI , SAKAMOTO KIYOSHI , FUNABASHI KENJI
IPC分类号： H02P6/08 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To reduce a power loss, radiation noise and conduction noise of a semiconductor switch and a peripheral circuit of an inverter 23 for driving a synchronous motor 3 while including a DC drive period at the time of starting. SOLUTION: During a DC drive period, the on/off-control of a semiconductor switch is performed such that a first switch pattern for simultaneously turning on a semiconductor switch 232 on the negative electrode side of a first phase and a semiconductor switch 233 on the positive electrode side of a second phase, and a second switch pattern for simultaneously turning on the semiconductor switch 232 on the negative electrode side of the first phase and a semiconductor switch 235 on the positive electrode side of a third phase are repeated alternately. Consequently, the number of switching times of the semiconductor switches 231-236 in an inverter 23 is reduced, the power loss of the semiconductor switch and the peripheral circuit is reduced, and the variation width of potential at the neutral Np of a three-phase load 3 is reduced to one third, thus suppressing radiation noise and conduction noise. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了减少用于驱动同步电动机3的半导体开关和外围电路的功率损耗，辐射噪声和传导噪声，同时包括启动时的直流驱动周期。解决方案：在直流驱动周期期间，执行半导体开关的导通/截止控制，使得用于同时接通第一相负极侧的半导体开关232和半导体开关的第一开关模式在第二相的正极侧的233以及第一相的负极侧的半导体开关232同时导通的第二开关图案和第三相的正极侧的半导体开关235交替地重复。因此，逆变器23中的半导体开关231-236的切换次数减少，半导体开关和外围电路的功率损耗减小，三相的中性Np的电位变化幅度负载3减少到三分之一，从而抑制辐射噪声和传导噪声。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2010252499A Device and method for control of synchronous motor 审中-公开
标题翻译：同步电机控制装置及方法
公开(公告)号：JP2010252499A
公开(公告)日：2010-11-04
申请号：JP2009098543
申请日：2009-04-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MAEDA DAISUKE , SHIRAHAMA HIDEFUMI , HASEGAWA HIROYUKI , SAKURAI KENJI , MISHIMA MITSUHIRO
IPC分类号： H02P6/16
摘要： PROBLEM TO BE SOLVED: To provide a device and method for control of a synchronous motor in an inexpensive constitution, capable of driving the synchronous motor at a lower vibration and low noise without being affected by variations in manufacturing of motors. SOLUTION: The device includes: a means which uses an output signal of position sensors 9A to 9C for detecting the magnetic position of the synchronous motor with an n-magnetic pole to calculate the rotational speed from the data of a machine angle period (at an n/two periods at an electric angle: one rotation of rotor) at every changing period of the output signal of the position sensor; a speed control means 43 for adjusting the magnitude and the frequency of an AC voltage output from a three-phase inverter 3 so that the rotational speed thus obtained approaches the speed command of the synchronous motor; and a means which generates a phase of the AC voltage output from the three-phase inverter based on the rotational speed calculated from the machine angle period data. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种以便宜的构造控制同步电动机的装置和方法，能够以较低的振动和低噪声驱动同步电动机，而不受电动机的制造变化的影响。解决方案：该装置包括：使用位置传感器9A至9C的输出信号的装置，用于利用n磁极检测同步电动机的磁位置，以从机器角度周期的数据计算转速在位置传感器的输出信号的每个变化周期，以电角度的n /两个周期（转子的一圈）; 速度控制装置43，用于调节从三相逆变器3输出的交流电压的大小和频率，使得如此获得的转速接近同步电动机的速度指令; 以及基于从机器角度周期数据计算出的转速，生成从三相逆变器输出的交流电压的相位的装置。版权所有（C）2011，JPO＆INPIT

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