公开(公告)号：JP2010233415A

公开(公告)日：2010-10-14

申请号：JP2009080972

申请日：2009-03-30

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/18

Abstract: PROBLEM TO BE SOLVED: To expand a drivable load region at a high-speed operation of a brushless DC motor while improving efficiency by suppressing a current in case of high-speed/high-load driving.
SOLUTION: When the brushless DC motor is driven at a high-speed, a second waveform generator detects a load state from a phase difference between a waveform generated by itself by a load detector 18 and an induced voltage of the brushless DC motor, and controls an electrical conduction at a proper conductive angle corresponding to the load state determined by a conductive-angle controller. The second waveform generator further generates the waveform of a fixed duty at a frequency set by a frequency setter 8, and imparts a voltage waveform driving the brushless DC motor to an inverter 3. Consequently, the current advancing angle of the brushless DC motor can be held properly and the driving region of the brushless DC motor can be expanded while improving the efficiency.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：在高速/高负载驱动的情况下通过抑制电流来提高效率的同时，在无刷直流电动机的高速运行中扩大可驱动负载区域。 解决方案：当无刷直流电动机被高速驱动时，第二波形发生器根据负载检测器18自身产生的波形与无刷直流电动机的感应电压之间的相位差来检测负载状态 并且以对应于由导电角度控制器确定的负载状态的适当导电角度来控制电导通。 第二波形发生器进一步在由频率设定器8设定的频率下产生固定占空比的波形，并将驱动无刷直流电动机的电压波形赋予逆变器3.因此，无刷直流电动机的电流前进角度可以是 能够在提高效率的同时扩大无刷直流电动机的驱动区域。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2014180149A

公开(公告)日：2014-09-25

申请号：JP2013052852

申请日：2013-03-15

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/06 ,  H02P6/16 ,  H02P6/18

CPC classification number: H02P6/182 ,  H02P27/085 ,  H02P2207/05

Abstract: PROBLEM TO BE SOLVED: To provide a small size and light weight motor driver at a low cost.SOLUTION: The motor driver includes: a rectification circuit that rectifies an AC current to a DC current; a smoothing section that smoothens an output voltage from the rectification circuit; an inverter that inverts a DC output from the smoothing section into a three phase AC current; a brushless DC motor driven by the inverter; a position detection section that detects a rotational position of the brushless DC motor; a speed estimation section that estimates the driving speed of the brushless DC motor based on a signal from the position detection section; and a waveform generation section that generates a waveform of desired voltage and frequency by means of pulse width modulation based on the driving speed of the brushless DC motor estimated by the speed estimation section and the output voltage from the inverter. When the PWM duty is smaller than or equal to a predetermined value, the carrier frequency is changed while ensuring PWM ON-time to a predetermined width. Accordingly, a minimum PWM ON-width can be ensured even in a state that the PWM duty is small. Thus, precise position detection of the brushless DC motor can be constantly obtained.

Abstract translation: 要解决的问题：以低成本提供体积小，重量轻的电机驱动器。解决方案：电动机驱动器包括：整流电路，将交流电流整流为直流电流; 平滑部，使来自整流电路的输出电压平滑; 将从平滑部的直流输出反相为三相交流电的逆变器; 由变频器驱动的无刷直流电动机; 位置检测部，其检测无刷直流电动机的旋转位置; 速度估计部，其基于来自所述位置检测部的信号估计所述无刷直流电动机的驱动速度; 以及波形生成部，其基于由速度推定部估计的无刷直流电动机的驱动速度和来自逆变器的输出电压，通过脉宽调制来生成期望的电压和频率的波形。 当PWM占空比小于或等于预定值时，在确保PWM接通时间达到预定宽度的同时改变载波频率。 因此，即使在PWM占空比小的状态下也能够确保最小的PWM导通宽度。 因此，可以恒定地获得无刷直流电动机的精确位置检测。

公开(公告)号：JP2012222842A

公开(公告)日：2012-11-12

申请号：JP2011082483

申请日：2011-04-04

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TAKEOKA YOSHINORI ,  TANAKA HIDENAO

IPC: H02P6/18 ,  H02P6/08 ,  H02P6/12

CPC classification number: H02P6/08 ,  H02P6/12 ,  H02P6/18

Abstract: PROBLEM TO BE SOLVED: To smoothly drive a brushless DC motor by avoiding influence of a suddenly increased bus voltage in switching phases of electrification.SOLUTION: When a drive part 12 switches phases of electrification, by making a switching element ON for an arm opposite to an arm in a phase where electrification is complete, there always exists a path for a current having been flowing in the phase where electrification is complete to return to a brushless DC motor 4, and thus energy does not return to small capacity smoothing capacitors 2e. Thereby, sudden increase in bus voltage is suppressed.

Abstract translation: 要解决的问题：通过避免电气开关阶段突然增加的母线电压的影响，平滑地驱动无刷直流电动机。 解决方案：当驱动部分12切换通电阶段时，通过在充电完成的阶段中使与臂相对的臂的开关元件导通，总是存在在相中流动的电流的路径 其中充电完成以返回到无刷DC电动机4，因此能量不会返回到小容量的平滑电容器2e。 由此，总线电压的突然上升被抑制。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2011254600A

公开(公告)日：2011-12-15

申请号：JP2010125586

申请日：2010-06-01

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： OGAWA KEIJI ,  TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/06 ,  H02P6/18

Abstract: PROBLEM TO BE SOLVED: To extend a drive range by obtaining stable driving performance, even when a brushless DC motor is driven at a high speed/high load.SOLUTION: Lead angle correction means 10 sets a terminal voltage lead angel value so as to maintain the current value constant detected by current detecting means A9. A second waveform generator 11 outputs a motor drive signal while keeping a duty constant with the set lead angle and a command frequency set based on the system status. Consequently, stable driving is enabled without position detection. In addition, stable driving is also enabled even when a brushless DC motor 4 is driven at a high speed or high load which is difficult to detect the position of the brushless DC motor 4, and a current detecting means B23 also protects against an overload current.

Abstract translation: 要解决的问题：即使在高速/高负载下驱动无刷直流电动机时，通过获得稳定的驱动性能来延长驱动范围。

解决方案：引线角度校正装置10设定端子电压引线角度值，以保持由电流检测装置A9检测的电流值常数。 第二波形发生器11输出马达驱动信号，同时以设定的导程角保持占空比常数，并根据系统状态设定指令频率。 因此，无需位置检测即可实现稳定的驱动。 此外，即使在无刷直流电动机4以难以检测无刷直流电动机4的位置的高速或高负载下驱动的情况下也能够进行稳定的驱动，并且电流检测装置B23还可以防止过载电流 。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011199926A

公开(公告)日：2011-10-06

申请号：JP2010060623

申请日：2010-03-17

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/18

Abstract: PROBLEM TO BE SOLVED: To expand a drive range by obtaining stable drive performance, even in driving a brushless DC motor at high speed and at a high load.SOLUTION: A motor drive 23 drives the brushless DC motor comprising a rotor 4a and a stator 4b including three-phase winding. The motor drive includes a first waveform generating unit 6 for outputting a first waveform signal, namely a waveform having an energization angle of not less than 120 degrees and not more than 150 degrees; a second waveform generating unit 10 for outputting a second waveform signal, namely a waveform having an energization angle of not less than 120 degrees and less than 180 degrees; and an operation change unit 11 for performing change so that the first waveform signal is outputted, when it is determined that speed of the rotor is lower than a prescribed speed and the second waveform signal is outputted when it is determined that the speed of the rotor is higher than the prescribed speed. Supply timing of power supplied to the three-phase winding by an inverter 3 is instructed, based on the first or second waveform signal outputted from the operation change unit.

Abstract translation: 要解决的问题：通过获得稳定的驱动性能来扩大驱动范围，即使在高速和高负载下驱动无刷直流电动机也是如此。解决方案：电动机驱动器23驱动包括转子4a和定子的无刷直流电动机 4b包括三相绕组。 电动机驱动器包括用于输出第一波形信号的第一波形发生单元6，即具有不小于120度且不大于150度的通电角的波形; 第二波形发生单元10，用于输出第二波形信号，即具有不小于120度且小于180度的通电角的波形; 以及操作改变单元11，当确定转子的速度低于规定速度时，进行改变以便输出第一波形信号，并且当确定转子的速度时，输出第二波形信号 高于规定速度。 基于从操作改变单元输出的第一或第二波形信号，指示由逆变器3提供给三相绕组的供电时刻。

公开(公告)号：JP2011193585A

公开(公告)日：2011-09-29

申请号：JP2010055751

申请日：2010-03-12

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TAKEOKA YOSHINORI ,  TANAKA HIDENAO

IPC: H02P6/18

Abstract: PROBLEM TO BE SOLVED: To provide a reliable motor drive suppressing an unstable state due to an external factor by obtaining stable drive performance even if driving a brushless DC motor at a high speed and with a high load.
SOLUTION: An advance correction means 10 sets a terminal voltage advance value to maintain a current value detected by a current detection means 9 to be constant. A second waveform generation part 11 outputs a motor drive signal while keeping duty constant by the set advance value and a command frequency set according to a system state, thus achieving stable drive without any position detection, and hence achieving stable drive even in high-speed drive and high-load drive where the position detection of the brushless DC motor 4 is difficult.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：即使驱动高速和高负载的无刷直流电动机，通过获得稳定的驱动性能来提供由于外部因素而抑制不稳定状态的可靠的电动机驱动。 解决方案：提前校正装置10设定终端电压提前值，以将由电流检测装置9检测到的电流值保持为恒定。 第二波形生成部11输出电机驱动信号，同时保持占空比常数设定的提前值和根据系统状态设定的指令频率，从而在没有任何位置检测的情况下实现稳定的驱动，因此即使在高速下也实现稳定的驱动 无刷直流电动机4的位置检测困难的驱动和高负载驱动。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010158147A

公开(公告)日：2010-07-15

申请号：JP2009242026

申请日：2009-10-21

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/18 ,  F04B49/06 ,  F25D11/00

CPC classification number: H02P27/06 ,  H02P6/15 ,  H02P6/18 ,  H02P6/181 ,  H02P23/0027 ,  H02P23/009 ,  H02P2201/03 ,  H02P2205/01

Abstract: PROBLEM TO BE SOLVED: To improve stability of a brushless DC motor under a high load and at high speed driving, and increase the drive range. SOLUTION: A motor drive device includes an inverter 3, a brushless DC motor 4, a position detecting means 5 for detecting the rotor relative position of the brushless DC motor, a first commutation means 6 for creating a waveform to drive the inverter from a signal from the position detecting means, a current phase detecting means 9 for detecting the current phase of the brushless DC motor, a second commutation means 10 for switching the conduction phase of the brushless DC motor from the detected current phase, a load deciding means 11 for deciding the load state of the brushless DC motor, and a switching means 15 for switching the waveform output from the inverter depending on the load state for either the first commutation means 6 or the second commutation means 10. When the brushless DC motor can not be driven at a target drive speed with the drive of the first commutation means 6 under a high load, the switching means 15 switches the first commutation means to the second commutation means. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提高无刷直流电机在高负载和高速驱动下的稳定性，并提高驱动范围。 解决方案：电动机驱动装置包括逆变器3，无刷直流电动机4，用于检测无刷直流电动机的转子相对位置的位置检测装置5，用于产生驱动逆变器的波形的第一换向装置6 来自位置检测装置的信号，用于检测无刷直流电动机的电流相位的电流相位检测装置9，用于从所检测的电流相位切换无刷直流电动机的导通相位的第二换向装置10，负载决定 用于确定无刷直流电动机的负载状态的装置11以及用于根据第一换向装置6或第二换向装置10的负载状态切换从逆变器输出的波形的开关装置15.当无刷直流电动机 不能以高负载下的第一换向装置6的驱动以目标驱动速度驱动，切换装置15将第一换向装置切换到第二换向 意味着。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2011010476A

公开(公告)日：2011-01-13

申请号：JP2009151970

申请日：2009-06-26

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TAKEOKA YOSHINORI ,  TANAKA HIDENAO

IPC: H02P6/06 ,  H02P6/18

Abstract: PROBLEM TO BE SOLVED: To provide a reliable drive device of brushless DC motors that improves stability in high-load and high-speed drive of brushless DC motors, expands a driving region, suppresses any unstable state due to external factors, and is stably driven even if loads become excessive.SOLUTION: The drive device corrects an output so that a state of current and voltage, where a current voltage state acquisition means 16 acquires an output of a second waveform generation unit 15 output at a prescribed frequency under a high load, coincides with an aimed state of current and voltage. Further, the device performs high-speed drive by an output of a waveform correction section 18 for correcting an output by voltage detected by a voltage detection means 17, thus holding an appropriate phase relationship according to drive speed and load states, input voltage states, or the like, thereby achieving stable drive even at disturbance, or the like.

Abstract translation: 要解决的问题：为了提供可靠的无刷直流电机驱动装置，提高了无刷直流电动机的高负载和高速驱动的稳定性，扩大驱动区域，抑制由于外部因素导致的任何不稳定状态，并被稳定驱动 即使负载变得过大。解决方案：驱动装置校正输出，使得当前电压状态获取装置16获取在高负载下以规定频率输出的第二波形发生单元15的输出的电流和电压状态 ，与电流和电压的目标状态一致。 此外，装置通过波形校正部分18的输出执行高速驱动，用于通过由电压检测装置17检测的电压校正输出，从而根据驱动速度和负载状态，输入电压状态保持适当的相位关系， 从而即使在干扰等情况下实现稳定的驱动。

公开(公告)号：JP2010246204A

公开(公告)日：2010-10-28

申请号：JP2009089927

申请日：2009-04-02

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： KAWASAKI TOMOHIRO ,  TANAKA HIDENAO ,  KYOGOKU AKIHIRO ,  TSUCHIYAMA YOSHIRO ,  TAKEOKA YOSHINORI ,  MAEDA SHIRO

IPC: H02M7/12

Abstract: PROBLEM TO BE SOLVED: To reduce a loss and simplify a control unit, in a DC power supply device in which a reduction in harmonic currents and an improvement in power factor are improved.
SOLUTION: The DC power supply device includes: a voltage doubler rectifier circuit 23 consisting of four diodes 4a to 4d and two capacitors 6a and 6b; a reactor 2 which is connected in series to the input side of the voltage doubler rectifier circuit 23; a smoothing capacitor 6c; a DC voltage detector 9; a carrier oscillator 11; a target voltage setter 10; a bidirectional switch 24, which is constituted by connecting switching elements 5a and 5b directly in the reverse direction and connecting reversely-conducting diodes 4e and 4f in parallel to each of the switching elements 5a and 5b; and a switch control driver. The bidirectional switch 24 is connected between the AC input ends of the voltage doubler rectifier circuit 23, thus a low-loss high-power converter is constituted in a simple configuration, without needing a transformer and a reverser as detectors for a main circuit, a multiplier for a control circuit, etc.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了减少损耗并简化控制单元，在减小谐波电流和提高功率因数的直流电源装置中。 解决方案：直流电源装置包括：由四个二极管4a至4d和两个电容器6a和6b组成的倍压整流器电路23; 与倍压整流电路23的输入侧串联连接的电抗器2; 平滑电容器6c; 直流电压检测器9; 载波振荡器11; 目标电压设定器10; 双向开关24，其通过将开关元件5a和5b直接相反方向连接并且将反向导通二极管4e和4f并联连接到每个开关元件5a和5b; 和开关控制驱动器。 双向开关24连接在倍压整流电路23的交流输入端之间，因此低损耗大功率转换器以简单的结构构成，不需要变压器和逆变器作为主电路的检测器， 控制电路乘数等。版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010187522A

公开(公告)日：2010-08-26

申请号：JP2009242027

申请日：2009-10-21

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： TANAKA HIDENAO ,  TAKEOKA YOSHINORI

IPC: H02P6/06

Abstract: PROBLEM TO BE SOLVED: To provide a device for driving a brushless DC motor, by which stability in driving with high load and high speed of the brushless DC motor is enhanced, a driving range is expanded, and an unstable state caused by an external factor is suppressed. SOLUTION: In the device for driving the brushless DC motor including a brushless DC motor 4 composed of a rotor having a permanent magnet and a stator having a three-phase winding, and an inverter 3 for supplying electric power to the three-phase winding, a rectangular wave having a conduction angle of 120 degrees or more and 150 degrees or less, or an equivalent waveform is output at low speed, then a rectangular wave and sine wave each having the conduction angle of 120 degrees or more and less than 180 degrees, or an equivalent waveform is output at high speed, in a predetermined frequency with a prescribed phase relation to a phase current of the brushless DC motor 4, and an induced voltage, the phase current and a terminal voltage phase of the brushless DC motor 4 are stabilized with an appropriate phase relation according to load and speed, thereby enhancing driving stability with high load and high speed. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 解决的问题：为了提供一种用于驱动无刷直流电动机的装置，通过该装置，无刷直流电动机的高负载和高速驱动的稳定性提高，驱动范围扩大，并且由 外部因素被抑制。 解决方案：在包括由具有永磁体的转子和具有三相绕组的定子构成的无刷直流电动机4的无刷直流电动机的驱动装置中，以及向三相绕组供给电力的逆变器3， 相位绕组，以低速输出具有120度以上且150度以下的导通角的矩形波或等效波形，然后分别具有120度以上的导通角的矩形波和正弦波 或者等效波形以与无刷直流电动机4的相电流成规定的相位关系的预定频率高速输出，并且感应电压，无刷的相电流和端电压相位 直流电机4根据负载和速度以适当的相位关系稳定，从而在高负载和高速下提高驱动稳定性。 版权所有（C）2010，JPO＆INPIT