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1. 发明授权

US08405344B2 Method and apparatus for estimating a rotation speed of an electric motor 有权
标题翻译：用于估计电动机的转速的方法和装置
公开(公告)号：US08405344B2
公开(公告)日：2013-03-26
申请号：US12617339
申请日：2009-11-12
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： H02P27/04
CPC分类号： G01P3/44 , H02P6/182
摘要： A method is disclosed for estimating a rotation speed of an electric motor supplied by an inverter, by determining a time derivative of a stator current vector of the electric motor during a zero vector state of the inverter; and determining an estimate of the rotation speed of the electric motor on the basis of the determined time derivative of the stator current vector.
摘要翻译：公开了一种通过在逆变器的零矢量状态期间确定电动机的定子电流矢量的时间导数来估计由逆变器提供的电动机的转速的方法; 并且基于所确定的定子电流矢量的时间导数来确定电动机的转速的估计。

2. 发明授权

US08483981B2 Induction motor parameter identification 有权
标题翻译：感应电机参数识别
公开(公告)号：US08483981B2
公开(公告)日：2013-07-09
申请号：US12830827
申请日：2010-07-06
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： G01R15/00
CPC分类号： H02P21/14 , G01R31/343 , H02P21/16 , H02P23/14
摘要： A method and an arrangement are provided for identifying parameters of an induction machine when the induction machine is connected to the output phases of a voltage source inverter and the induction machine is in standstill state. The method includes providing a DC magnetization current (idc—magn) to the induction machine with the inverter, controlling the power semiconductors of the inverter to an off-state, controlling all the output phases of the inverter to the same potential to provide a zero voltage vector, measuring the stator current (isd) during the zero voltage vector, and determining parameters of the induction machine from the stator current (isd) measured during the zero voltage vector.
摘要翻译：提供了一种方法和装置，用于当感应电机连接到电压源逆变器的输出相并且感应电机处于停止状态时识别感应电机的参数。该方法包括：通过逆变器向感应电机提供直流磁化电流（idc-magn），将逆变器的功率半导体控制到截止状态，控制逆变器的所有输出相位达到相同的电位，以提供零电压矢量，在零电压矢量期间测量定子电流（isd），以及根据在零电压矢量期间测量的定子电流（isd）确定感应电机的参数。

3. 发明授权

US07262577B2 Method for estimating the sum of stator and rotor resistances 有权
标题翻译：估计定子和转子电阻之和的方法
公开(公告)号：US07262577B2
公开(公告)日：2007-08-28
申请号：US11408030
申请日：2006-04-21
申请人： Samuli Heikkilä , Mikko Vertanen
发明人： Samuli Heikkilä , Mikko Vertanen
IPC分类号： H02P3/18
CPC分类号： G01R31/343 , H02P23/14
摘要： A method for estimating the sum of the stator and rotor resistances of an induction machine using a frequency converter when the frequency converter is connected to the induction machine. The method comprises the steps of controlling the stator current of the induction machine with the frequency converter such that the rotor flux (ψR) changes substantially linearly while the stator current is substantially constant, determining the magnitude of stator voltage and stator current while the rotor flux is changing substantially linearly, and calculating the sum of the stator and rotor resistances from the determined magnitudes of stator voltage and stator current.
摘要翻译：一种用于当变频器连接到感应电机时使用变频器估计感应电机的定子和转子电阻之和的方法。该方法包括以下步骤：利用变频器控制感应电机的定子电流，使得转子磁通（psi）在定子电流基本恒定的同时基本上线性地改变，确定定子的幅度电压和定子电流，同时转子磁通基本线性地变化，并根据确定的定子电压和定子电流的大小计算定子和转子电阻之和。

4. 发明授权

US07250739B2 Method for estimating the rotor time constant of an induction machine 有权
公开(公告)号：US07250739B2
公开(公告)日：2007-07-31
申请号：US11444296
申请日：2006-06-01
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： G01R31/34
CPC分类号： H02P23/14 , G01R31/34 , H02P2207/01
摘要： A method for estimating the rotor time constant (τr) of an induction machine when the stator resistance (Rs) and rotor resistance (Rr) of the induction machine are known. The method comprises the steps of feeding a DC current to the stator of the induction machine, injecting a sine-wave current component into the stator of the induction machine, the current having an amplitude (isc) and an angular frequency (ωc), measuring the voltage component (uscd) of the stator voltage of the induction machine in the same direction and with the same angular frequency as the injected current, and calculating the rotor time constant using equation τ r = 1 ω c ⁢ u scd - R s ⁢ i sc ( R s + R R ) ⁢ i sc - u scd .

5. 发明授权

US07352220B2 Measuring average of phase voltage of a frequency converter based on an idealized waveform 失效
标题翻译：基于理想化波形测量变频器的相电压平均值
公开(公告)号：US07352220B2
公开(公告)日：2008-04-01
申请号：US11350933
申请日：2006-02-10
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： H03K3/017 , H03K5/04 , H03K7/08
CPC分类号： H02P27/12 , H02M7/5395 , H02M2001/0022
摘要： A method and arrangement for determining the effective time of a voltage pulse of phase voltage generated by a frequency converter provided with an intermediate voltage circuit, the voltage pulses of the phase voltage being generated from the upper and lower voltage levels (UDC, 0) of the intermediate voltage circuit, the voltage levels showing a difference in potential (UDC). The method includes generating a first reference voltage (Uref1) and a second reference voltage (Uref2); scaling the phase output voltage by the scaling coefficient (k); comparing the low-pass filtered phase output voltage with the first reference voltage (Uref1); detecting a time instant (t1) when the low-pass filtered phase output voltage exceeds the first reference voltage (Uref1); comparing the low-pass filtered phase output voltage with the second reference voltage (Uref2); detecting a time instant (t2) when the low-pass filtered phase output voltage is lower than the second reference voltage (Uref2); and calculating the effective time of the voltage pulse on the basis of the time between the first and the second time instants and a constant term.
摘要翻译：一种用于确定由设置有中间电压电路的变频器产生的相电压的电压脉冲的有效时间的方法和装置，所述相电压的电压脉冲是从上和下电压电平（U DC）产生的，0），表示电位差（U SUB DC）的电压电平。该方法包括产生第一参考电压（U SUB ref1）和第二参考电压（U SUB ref2 ）; 按比例系数（k）缩放相位输出电压; 将低通滤波的相位输出电压与第一参考电压（U ref1）进行比较; 当所述低通滤波相位输出电压超过所述第一参考电压（U SUB ref1）时，检测时刻（t 1> 1）; 将低通滤波相位输出电压与第二参考电压（U SUB ref2）进行比较; 当所述低通滤波相位输出电压低于所述第二参考电压（U SUB ref2）时，检测时刻（t 2> 2）; 并且基于第一和第二时刻之间的时间和恒定项计算电压脉冲的有效时间。

6. 发明授权

US07034510B2 Method for coupling inverter to alternating voltage 有权
标题翻译：将逆变器耦合到交流电压的方法
公开(公告)号：US07034510B2
公开(公告)日：2006-04-25
申请号：US10476660
申请日：2002-06-13
申请人： Samuli Heikkilä , Mikko Vertanen
发明人： Samuli Heikkilä , Mikko Vertanen
IPC分类号： G05F1/00 , H02M7/537 , H02P27/00
CPC分类号： H02J3/42 , H02P27/16
摘要： A method for coupling an inverter to an alternating voltage source, the inverter comprising a current controller, which controls phase currents and implements reference current. The method comprises steps of giving zero current as the reference current for the current controller, determining phase voltages of the inverter, determining frequency of the alternating voltage source from the determined phase voltages, and synchronizing and coupling the inverter to the determined frequency of the alternating voltage source.
摘要翻译：一种用于将逆变器耦合到交流电压源的方法，所述逆变器包括电流控制器，其控制相电流并实现参考电流。该方法包括以下步骤：给出电流控制器的零电流作为参考电流，确定逆变器的相电压，从所确定的相电压确定交流电压源的频率，以及将逆变器同步并耦合到所确定的交变频率电压源。

7. 发明授权

US06195274B1 Method for defining instantaneous value of current of pulse-controlled inductive load 有权
标题翻译：定义脉冲电感负载电流瞬时值的方法
公开(公告)号：US06195274B1
公开(公告)日：2001-02-27
申请号：US09555334
申请日：2000-05-30
申请人： Petri Schroderus , Samuli Heikkilä
发明人： Petri Schroderus , Samuli Heikkilä
IPC分类号： H02J102
CPC分类号： G01R19/0092
摘要： A method of defining an instantaneous value of a current (i2e) of a pulse-controlled inductive load when the impedance of the load is known, the method comprising the steps of: measuring the output voltage (u1) of a pulsed voltage source, and measuring the output current (i1) of the pulsed voltage source. The method is characterized by further comprising the steps of: low-pass filtering the measured output current (i1) of the pulsed voltage source to produce a fundamental wave current (i1lp), defining a load current estimate (i2est) by computation on the basis of the measured output voltage (u1) of the pulsed voltage source and the impedance of the load, high-pass filtering the load current estimate (i2est), and defining the instantaneous value of the load current (i2e) by adding the high-pass-filtered load current estimate (i2hp) to the fundamental wave current (i1p).
摘要翻译：一种在已知负载阻抗时定义脉冲控制电感负载的电流（i2e）的瞬时值的方法，所述方法包括以下步骤：测量脉冲电压源的输出电压（u1），以及测量脉冲电压源的输出电流（i1）。该方法的特征还在于包括以下步骤：对所测量的脉冲电压源的输出电流（i1）进行低通滤波，以产生基波电流（i1lp），通过计算基础确定负载电流估计（i2est）的脉冲电压源的测量输出电压（u1）和负载阻抗，对负载电流估计（i2est）进行高通滤波，并通过加上高通量来定义负载电流（i2e）的瞬时值 - 滤波负载电流估计（i2hp）到基波电流（i1p）。

8. 发明授权

US08415916B2 Estimation of parameters of an induction machine 有权
标题翻译：感应电机参数估算
公开(公告)号：US08415916B2
公开(公告)日：2013-04-09
申请号：US12829908
申请日：2010-07-02
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： H02P1/24
CPC分类号： H02P21/14 , G01R31/343 , H02P23/14
摘要： A method and an arrangement are disclosed for identifying one or more parameters of an induction machine when the induction machine is connected to the output phases of a voltage source inverter and the induction machine is in standstill state. The method can include a first phase for magnetizing the machine by providing a first DC magnetization current until the induction machine reaches steady state, the current reference of the inverter having a first value (idc—ref1). A first maximum value (imz—max) of the stator current (isd) is measured during a zero voltage vector. In a second phase, the machine is magnetized by providing a second DC magnetization current, the current reference having a second value (idc—ref2) which is higher than the first reference (idc—ref1). A second maximum value of (isdz—max) the stator current is measured during a zero voltage vector, and a parameter of the induction machine is estimated when the measured first and second maximum values are equal.
摘要翻译：公开了一种方法和装置，用于当感应电机连接到电压源逆变器的输出相并且感应电机处于停止状态时识别感应电机的一个或多个参数。该方法可以包括通过提供第一直流磁化电流直到感应电机达到稳定状态来使机器磁化的第一相，反相器的电流基准具有第一值（idc-ref1）。在零电压矢量期间测量定子电流（isd）的第一最大值（imz-max）。在第二阶段，通过提供第二直流磁化电流来对机器进行磁化，该电流参考具有高于第一参考值（idc-ref1）的第二值（idc-ref2）。在零电压矢量期间测量定子电流的第二个最大值（isdz-max），并且当测量的第一和第二最大值相等时，估计感应电机的参数。

9. 发明授权

US06552510B2 Method for frequency converter 有权
标题翻译：变频器方法
公开(公告)号：US06552510B2
公开(公告)日：2003-04-22
申请号：US10020156
申请日：2001-12-18
申请人： Samuli Heikkilä
发明人： Samuli Heikkilä
IPC分类号： H02P540
CPC分类号： H02P23/30 , H02P21/30
摘要： A method for a frequency converter, when the frequency converter controls a motor and operates torque-controlled partly or entirely in a field weakening region. The method comprises the steps of defining the direction of travel and sector of a stator flux vector ({overscore (&psgr;)}s) in the motor, predicting a torque estimate (Tpred) produced by a voltage vector of the output of the frequency converter at the end of the voltage vector when a voltage vector change occurs at the instant of prediction, comparing the predicted torque estimate (Tpred) with a reference torque (Tref) of the frequency converter, and implementing the voltage vector change when the predicted torque estimate (Tpred) is smaller than the reference torque (Tref) and the stator flux vector ({overscore (&psgr;)}s) is moving in a positive direction of travel or when the torque estimate (Tpred) is greater than the reference torque (Tref) and the stator flux vector ({overscore (&psgr;)}s) is moving in a negative direction of travel.
摘要翻译：一种频率转换器的方法，当变频器控制电动机并且在弱磁区域中部分地或完全地进行扭矩控制时进行操作。该方法包括以下步骤：确定定子通量矢量的行进方向和扇区（在电动机中为过大（psis）），预测由变频器输出端的电压矢量产生的转矩估计（Tpred）在预测时刻发生电压矢量变化时，将预测转矩估计（Tpred）与变频器的基准转矩（Tref）进行比较，并在预测转矩估计（Tpred）时实现电压矢量变化，小于参考转矩（Tref）和定子通量矢量（{overscore（psis））在正向行进中移动，或者当转矩估计（Tpred）大于参考转矩（Tref）和定子通量矢量（{overscore（psis））正朝着负面的旅行方向前进。

10. 发明授权

US06313599B2 Method for controlling an inverter 有权
标题翻译：逆变器控制方法
公开(公告)号：US06313599B2
公开(公告)日：2001-11-06
申请号：US09760787
申请日：2001-01-17
申请人： Mikko Norrkniivilä , Samuli Heikkilä
发明人： Mikko Norrkniivilä , Samuli Heikkilä
IPC分类号： H02P2100
CPC分类号： H02M7/48 , H02M2007/53876
摘要： A method for controlling an inverter which comprises the switching components to be controlled, the method comprising the steps of determining a current vector ({overscore (i)}olo) for the inverter output; determining a flux vector ({overscore (&psgr;)}) for the inverter load; determining an angular speed (&ohgr;) for the inverter load; determining a resistance (R) for the inverter load. The method further comprises the steps of determining a voltage vector ({overscore (b)}) as a sum of the product of the inverter load resistance (R) and the output current vector ({overscore (i)}olo) and a voltage proportional to the electromotive force of the load; forming a direction vector ({overscore (S)}) on the basis of a current vector ({overscore (i)}ref) for the inverter reference value and the inverter output current vector ({overscore (i)}olo); determining a space coordinate system &mgr;&ugr; associated with the voltage vector ({overscore (b)}) and having a real axis &mgr; which is co-directional with the voltage vector ({overscore (b)}); determining the direction vector ({overscore (S)}) in the &mgr;&ngr; coordinates system; and forming inverter switch commands on the basis of a component ({overscore (S)}&mgr;) co-directional with the &mgr; axis of the direction vector ({overscore (S)}) and a component ({overscore (S)}&ugr;) co-directional with the &ugr; axis.
摘要翻译：一种用于控制逆变器的方法，包括要控制的开关元件，该方法包括以下步骤：确定逆变器输出的电流矢量（{overscore（i）} olo）; 确定逆变器负载的通量矢量（{overscore（psi）}）; 确定逆变器负载的角速度（ω）; 确定逆变器负载的电阻（R）。该方法还包括以下步骤：将电压矢量（{overscore（b）}）确定为逆变器负载电阻（R）与输出电流矢量（{overscore（i）} olo）的乘积之和与负载的电动势成比例; 根据逆变器参考值和逆变器输出电流矢量（{overscore（i）} olo）的电流矢量（{overscore（i）} ref）形成方向矢量（{overscore（S）}）; 确定空间坐标系统与电压矢量（{overscore（b）}）相关联，并具有与电压矢量（{overscore（b）}）同向的实轴mu; 确定mu＆ngr中的方向向量（{overscore（S）}）坐标系并且基于与方向矢量（{overscore（S）}）的mu轴同向的分量（{overscore（S）} mu）和分量（{overscore（S）}μu）构成反相器开关命令 ;）与＆ugr 轴。

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