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    • 3. 发明申请
    • MULTIPLEX PULSE-WIDTH MODULATION POWER CONVERTER
    • 多功能脉冲宽度调制功率转换器
    • WO1997049170A1
    • 1997-12-24
    • PCT/JP1997002059
    • 1997-06-16
    • KABUSHIKI KAISHA YASKAWA DENKIYAMANAKA, KatsutoshiSAWA, ToshihiroTAJIMA, Eijiro
    • KABUSHIKI KAISHA YASKAWA DENKI
    • H02M07/48
    • H02M7/49B60L11/1803B60L11/185B60L2210/20H02J7/0013H02J7/0065Y02T10/7005Y02T10/7055Y02T10/7072Y02T10/725Y02T90/121Y02T90/127Y02T90/128Y02T90/14
    • A multiplex pulse-width modulation power converter which drives a three-phase AC motor at a variable speed has three units (111, 112, and 113), with each unit being constituted of a DC power source or (n) pieces (n>/=2) of batteries (1211, 1212, and 1213) each of which is composed of one or more battery cells and (n) pieces of power converters (1311, 1312, and 1313) which respectively convert the DC power of the batteries into single-phase AC power. The single-phase AC terminals in each unit are connected in series and single-phase AC terminals in one of the groups in the respective units which are not connected to the single-phase AC terminals of the other power converters are star-connected to each other and the unconnected terminals in the other group are respectively connected to the three input terminals of the AC motor. The multiplex pulse-width modulation power converter is also provided with control circuits (1411, 1412, ... 1433) which respectively control the (n) pieces of power converters in each unit so that the AC outputs outputted to the single-phase AC terminals of the power converters are in the same phase, and performs multiplex pulse-width modulation so that the AC outputs of the three units can be deviated from each other by an electrical angle of 120 DEG .
    • 以变​​速驱动三相交流电动机的多路脉冲宽度调制电力转换器具有三个单元(111,112和113),每个单元由直流电源或(n)个(n> (1211,1212和1213)的电池组(1211,1212和1213)分别由一个或多个电池单元和分别转换电池的直流电力的(n)个电力转换器(1311,1312和1313)组成, 进入单相交流电源。 每个单元中的单相交流端子串联连接,并且单相中的一个组中的未连接到其它功率转换器的单相交流端子的单相交流端子与每个单相交流端子星形连接 另一组中的另一个和未连接的端子分别连接到AC电动机的三个输入端子。 复用脉冲宽度调制功率转换器还设有控制电路(1411,1412,... 1433),分别控制每个单元中的(n)个电力转换器,使得输出到单相AC 电源转换器的端子处于同一相位,并且执行多路复用脉冲宽度调制,使得三个单元的AC输出可以彼此偏离120度的电角度。
    • 4. 发明申请
    • POWER CONVERTER AND POWER CONVERTING METHOD
    • 电力转换器和电力转换方法
    • WO1997009773A1
    • 1997-03-13
    • PCT/JP1996002495
    • 1996-09-04
    • KABUSHIKI KAISHA YASKAWA DENKISAWA, ToshihiroKUME, TsuneoHIRANO, Koichi
    • KABUSHIKI KAISHA YASKAWA DENKI
    • H02M05/27
    • H02P27/16H02M5/271H02M7/487Y02P80/116
    • A power converter which drives a high-voltage AC motor at a variable speed. A conventional inverter system has such problems that the system cannot cope with technical tasks required by the market such as the energy and resource saving for environment conservation, miniaturization, higher efficiency, and suppression of distortion of voltage and current waveforms, and the system cannot cope with a technical task to improve the redundancy such as the operation of the system with a sound part when a fault occurs. This power converter is a multiplex three-phase pulse width modulation cycloconverter and drives a high-voltage motor (10) at a variable speed by controlling two-way semiconductor switches (11-16) by a pulse width modulation so that the voltages of AC ouputs outputted to the single-phase AC terminals (u and v) of three-/single-phase pulse width modulation cycloconverters (1-9) are in phase in the same unit and the electrical angles of the fundamental wave voltage phases of the three units are shifted by 120 DEG from each other. When one of the cycloconverters (1-9) fails, the motor (10) is driven at a variable speed by short-circuiting the single-phase AC terminals (u and v) of the faulty cycloconverter and successively short-circuiting at regular intervals the three pairs of two-way semiconductor switches respectively connected to the three-phase AC terminals (r, s, and t) of the cycloconverters of the other tow units, belonging to the same group as that of the faulty cycloconverter. A current converting method is also disclosed.
    • 一种以可变速度驱动高压交流电动机的电力转换器。 传统的逆变器系统具有这样的问题,即系统无法应对市场所需的技术任务,如节能环保,小型化,高效率,抑制电压和电流波形失真等能源和资源节约,系统无法应对 具有提高冗余性的技术任务,例如当故障发生时具有声音部分的系统的操作。 该功率转换器是多路复用三相脉宽调制循环变换器,通过脉冲宽度调制来控制双向半导体开关(11-16),以可变速度驱动高压电动机(10),使得AC 输出到三相/单相脉宽调制周波变换器(1-9)的单相交流端子(u和v)的输出在相同的单位中同相,并且三相的基波电压相位的电角度 单位相差120度。 当循环换流器(1-9)中的一个发生故障时,通过使故障循环变频器的单相交流端子(u和v)短路并以规则间隔连续短路,以可变速度驱动电动机(10) 三对双向半导体开关分别连接到与故障循环换流器相同的组的另一个牵引单元的循环变换器的三相AC端子(r,s和t)。 还公开了电流转换方法。
    • 5. 发明申请
    • POSITION CONTROLLER
    • 位置控制器
    • WO1998040801A1
    • 1998-09-17
    • PCT/JP1997003147
    • 1997-09-05
    • KABUSHIKI KAISHA YASKAWA DENKITSURUTA, Kazuhiro
    • KABUSHIKI KAISHA YASKAWA DENKI
    • G05D03/12
    • G05B19/232G05B19/19G05B2219/41442G05B2219/41444G05B2219/42062G05B2219/42074
    • A position controller which controls the position of a motor comprising a position control unit (12) which controls the position of the motor so that the position of the motor may agree with the position command of a command generator (11), a speed control unit (13) which outputs a torque command and controls the speed of the motor so that the speed of the motor may agree with the speed command of the position control unit (12) and a current control unit (14) which controls the current applied to the motor in accordance with the command of the speed control unit (13). The speed control unit (13) has a speed feedback filter (131) by which the speed is applied to a low-pass filter, a subtracter (132) which subtracts the signal of the speed feedback filter (131) from the speed command to obtain a speed deviation, an integrator (133) which integrates the speed deviation with respect to time to obtain an integrated speed deviation value, a multiplier (136) which multiplies the speed command by a coefficient alpha , an adder/subtracter (135) which adds the signal of the multiplier to the integrated speed deviation value and, further, subtracts the speed from the sum, a multiplier (136) which multiplies the output of the adder/subtracter by a speed loop gain Kv and a torque filter (139) which applies the signal of the multiplier (136) to a low-pass filter.
    • 一种位置控制器,其控制电动机的位置,该电动机包括位置控制单元(12),其控制电动机的位置,使得电动机的位置可以与命令发生器(11)的位置指令一致;速度控制单元 (13),其输出转矩指令并控制电动机的速度,使得电动机的速度可以与位置控制单元(12)的速度指令和控制施加到 电机按照速度控制单元(13)的指令。 速度控制单元(13)具有速度反馈滤波器(131),速度被施加到低通滤波器,减法器(132)从速度指令减去速度反馈滤波器(131)的信号, 获得速度偏差,将速度偏差相对于时间积分以获得积分速度偏差值的积分器(133),将速度指令乘以系数α的乘法器(136),加法器/减法器(135) 将乘法器的信号与积分速度偏差值相加,并且进一步从和减去速度,乘法器(136),其将加法器/减法器的输出乘以速度环增益Kv和转矩滤波器(139) 其将乘法器(136)的信号应用于低通滤波器。
    • 6. 发明申请
    • PROTECTING METHOD FOR INRUSH CURRENT PREVENTING RESISTOR
    • 冲击电流防护电阻的保护方法
    • WO1998028835A1
    • 1998-07-02
    • PCT/JP1997004694
    • 1997-12-18
    • KABUSHIKI KAISHA YASKAWA DENKIHIROSE, KenjiONO, Akihisa
    • KABUSHIKI KAISHA YASKAWA DENKI
    • H02M07/06
    • H02M7/062H02H7/008H02H9/001Y10S323/908Y10T307/826
    • For the purpose of preventing generation of burning or disconnection of an inrush current preventing resistor (3) when making and breaking of an AC power supply are frequently repeated, energy to be charged to a smoothing capacitor (4) at the time of making the power supply is calculated from the capacitance of the smoothing capacitor (4) of a capacitor-input type rectifying circuit and the value of a rectifying smoothing DC voltage, and a mean power is calculated from the energy and the number of times of power making and breaking within a predetermined period of time. If the mean power exceeds an allowable power of the inrush current preventing resistor (3) for preventing an inrush current at the time of making the power supply, warning by an alarm display or an alarm output and power non-making interlock are carried out, and driving of a load-side device is stopped. In the case where the capacitance of the smoothing capacitor (4) and the value of the rectifying smoothing DC voltage are known in advance, the number of power on/off times within a predetermined period of time is counted. If the number of times exceeds a predetermined number, warning by an alarm display or an alarm output and power non-making interlock are carried out, and driving of the load-side device is stopped.
    • 为了在频繁地重复交流电源的制动和断路时防止浪涌电流阻止电阻(3)的燃烧或断开的发生,在制动电力时要向平滑电容器(4)充电的能量 根据电容器输入型整流电路的平滑电容器(4)的电容和整流平滑直流电压的值来计算电源,并根据能量和发电次数和断电次数计算平均功率 在预定时间段内。 如果平均功率超过用于防止在进行电力供给时的浪涌电流的浪涌电流阻止电阻器(3)的允许功率,则通过报警显示或报警输出进行警告,并进行非制动互锁, 停止负载侧装置的驱动。 在平滑电容器(4)的电容和整流平滑DC电压的值预先已知的情况下,对预定时间段内的电源接通/关断次数进行计数。 如果次数超过预定数量,则进行报警显示或报警输出和非制动互锁的警告,停止负载侧装置的驱动。
    • 9. 发明申请
    • MOTOR SPEED CONTROLLER
    • 电机速度控制器
    • WO1996004708A1
    • 1996-02-15
    • PCT/JP1995001534
    • 1995-08-02
    • KABUSHIKI KAISHA YASKAWA DENKINAKAMURA, HiroshiTSURUTA, Kazuhiro
    • KABUSHIKI KAISHA YASKAWA DENKI
    • H02P05/00
    • H02P23/16H02P6/17
    • A motor speed controller which detects the position y(i-k) of a motor at the time K.Ts (k >/= 0, Ts; sampling period) ago from the present time (i) and feedback-controls the speed of the motor by using a motor speed feedback signal vfb calculated based on the signal representing the motor position detected is provided with a means which calculates a torque command u(i) from a speed command and the signal vfb, means which calculates the speed v(i-k) of the motor from the position y(i-k), means which stores the values of the speed v(i-m) (m = k, ..., M') from M' sampling periods before to the time i-K, a predictor which predicts the speed value v*(i+m) (m = -K+2, ..., M) of the motor at the times up to M sampling periods after from the dynamic characteristic model of the motor, the torque command u(i), and position (i-K), and means which finds the speed feedback signal from formula (1) where Wm and W'm represent weight factors.
    • 电动机速度控制器,从当前时间(i)检测在时间K.Ts(k> = 0,Ts;采样周期)的电动机的位置y(ik),并且反馈控制电动机的速度 通过使用基于表示检测到的电动机位置的信号计算的电动机速度反馈信号vfb,设置有从速度指令和信号vfb计算转矩指令u(i)的装置,计算速度v(ik) 从位置y(ik)的电动机的M',存储从时间iK前的M'采样周期的速度v(im)(m = k,...,M')的值的装置,预测器 电动机的动态特性模型后的M个采样周期之后的电动机的速度值v *(i + m)(m = -K + 2,...,M),转矩指令u( i)和位置(iK),以及找到来自公式(1)的速度反馈信号的装置,其中Wm和W'm表示权重因子。
    • 10. 发明申请
    • WINDING MACHINE STOPPING METHOD
    • 卷绕机停止方法
    • WO1995035254A1
    • 1995-12-28
    • PCT/JP1995001238
    • 1995-06-21
    • KABUSHIKI KAISHA YASKAWA DENKIHIRAMATSU, Kazuhiko
    • KABUSHIKI KAISHA YASKAWA DENKI
    • B66D01/54
    • B66C13/23B66D1/46B66D5/30
    • A method of stopping a winding machine that hoists and lowers an object prevents abrasion of an electromagnetic brake and a failure to hoist a load. Based on a speed instruction NREF generated by a speed instruction generating circuit NRC, a speed controller ASR outputs a torque instruction TREF to be inputted to an electric motor M and operates the winding machine. To stop the machine, after a brake instruction BR is outputted to an electromagnetic brake directly coupled to the electric motor M, the value of the torque instruction to the electric motor M is controlled to be zero for a predetermined length of time. When the electric motor speed NFB becomes zero, the control of the electric motor M is stopped.
    • 一种停止卷绕机的方法,该卷绕机能够提升和降低物体,防止电磁制动器的磨损和提升负载的失败。 根据由速度指令生成电路NRC生成的速度指令NREF,速度控制器ASR输出要输入到电动机M的转矩指令TREF,并对绕线机进行动作。 为了停止机器,在将制动指令BR输出到与电动机M直接连接的电磁制动器之后,将电动机M的转矩指令的值控制为零,持续规定的时间。 当电动机速度NFB变为零时,停止对电动机M的控制。