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    • 5. 发明授权
    • Motor driver
    • 电机驱动器
    • US07064516B2
    • 2006-06-20
    • US10952795
    • 2004-09-30
    • Yuuichi YamadaNaoto OtaTakashi HaradaMamoru Yaeshima
    • Yuuichi YamadaNaoto OtaTakashi HaradaMamoru Yaeshima
    • H02P27/04
    • G01R31/343H02P27/08
    • While the motor drive amplifier is not operating, electromagnetic switch contacts are held closed for a predetermined period of time, three-phase power is rectified by a rectifier circuit and a smoothing capacitor is charged. Then, the smoothing capacitor is discharged through a discharging resistor and, when a predetermined voltage is reached, a contact is closed, with the result that a closed circuit is formed by the smoothing capacitor, a detection resistor, a motor coil, motor insulation resistance, and ground. A voltage generating across the detection resistor due to leakage current is detected and compared with a reference value. If the detected voltage exceeds the reference value, an insulation degradation signal is delivered.
    • 当电机驱动放大器不工作时,电磁开关触点保持关闭一段预定的时间,三相电源由整流电路整流,平滑电容器被充电。 然后,平滑电容器通过放电电阻器放电,并且当达到预定电压时,触点闭合,结果是由平滑电容器,检测电阻器,电动机线圈,电动机绝缘电阻形成闭合电路 ,和地面。 检测由漏电流产生的检测电阻两端的电压,并将其与参考值进行比较。 如果检测到的电压超过参考值,则传递绝缘劣化信号。
    • 8. 发明授权
    • Motor driving apparatus
    • 电机驱动装置
    • US07042178B2
    • 2006-05-09
    • US10859356
    • 2004-06-03
    • Yuuichi YamadaShigeki HanyuMamoru Yaeshima
    • Yuuichi YamadaShigeki HanyuMamoru Yaeshima
    • H02P1/26H02P1/42H02P3/18H02P5/28H02P7/36
    • H02M5/4585H02P23/07
    • A motor driving apparatus including a regeneration control function and a power storage device for accumulating a regenerative current and for supplying an inverter section with electric power during acceleration. The inverter section is connected to a converter section by a DC link to which regeneration start detecting means and the power storage device are connected. When the regeneration start detecting means detects that a voltage at the DC link reaches a regeneration control start voltage, a controller controls switching elements and starts regeneration control. The regenerative current is accumulated in the capacitor through a diode. When a motor is in a power running state, the switching elements are turned on to apply the voltage at the power storage device to the DC link, and the charged power is utilized for motor acceleration. At that time, the regeneration control start voltage for the regeneration start detecting means is made higher, thereby preventing regeneration control from being activated due to application of the capacitor's voltage. Not only the regenerative current is effectively utilized by the power storage device, but also the regeneration control function can be utilized.
    • 一种包括再生控制功能的电动机驱动装置和用于累加再生电流并且用于在加速期间向逆变器部供电的蓄电装置。 逆变器部通过再生开始检测装置和蓄电装置连接的直流链路连接到转换器部。 当再生开始检测装置检测到DC链路处的电压达到再生控制开始电压时,控制器控制开关元件并开始再生控制。 再生电流通过二极管累积在电容器中。 当电动机处于动力运行状态时,开关元件被接通以将蓄电装置上的电压施加到直流母线,并且充电电力用于电动机加速。 此时,再生开始检测装置的再生控制开始电压变高,从而防止再生控制由于施加电容器的电压而被激活。 不仅蓄电装置有效地利用再生电流,而且可以利用再生控制功能。
    • 9. 发明授权
    • Motor driving apparatus
    • 电机驱动装置
    • US07227323B2
    • 2007-06-05
    • US10859237
    • 2004-06-03
    • Yuuichi YamadaShigeki HanyuMamoru Yaeshima
    • Yuuichi YamadaShigeki HanyuMamoru Yaeshima
    • H02P1/26H02P3/14B66B1/06
    • H02M5/458H02M5/4585H02P3/14H02P3/18
    • A motor driving apparatus applicable to various types of motor driving apparatuses and having a power storage section for storing a regenerative current and supplying power to an inverter section at the time of acceleration. The motor driving apparatus further comprises a converter section, a DC link, and an inverter section, thereby driving a motor. Connected to the DC link is the power storage section including a capacitor, a charging circuit, a discharging circuit and a diode. The regenerative current produced at the motor deceleration is stored in the capacitor through the diode. The power stored in the capacitor is outputted to the DC link by turning a switching element of the discharging circuit ON at the motor acceleration. Furthermore, the charging circuit has a boost switching regulator circuit for charging the capacitor to the given upper limit voltage equal to or larger than voltage of the DC link and a current limitation circuit for limiting a charging current to the given upper limit. The upper limit of the charging current can be changed according to the type of the motor driving apparatus.
    • 一种适用于各种电动机驱动装置的电动机驱动装置,具有用于存储再生电流的蓄电部,并且在加速时向逆变器部供电。 电动机驱动装置还包括转换器部分,直流链路和逆变器部分,从而驱动电动机。 连接到直流链路的是存储部分,其包括电容器,充电电路,放电电路和二极管。 电机减速时产生的再生电流通过二极管存储在电容器中。 存储在电容器中的电力通过在马达加速度下打开放电电路的开关元件而被输出到DC链路。 此外,充电电路具有用于将电容器充电到等于或大于DC链路的电压的给定上限电压的升压开关调节器电路和用于将充电电流限制到给定上限的电流限制电路。 充电电流的上限可以根据电动机驱动装置的类型而改变。