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11. 发明授权

US11183931B2 Power converter including a feedback control system 有权
公开(公告)号：US11183931B2
公开(公告)日：2021-11-23
申请号：US16595740
申请日：2019-10-08
申请人： Mitsubishi Electric Corporation
发明人： Yuya Tanaka , Akinu Nakabayashi , Tomoyuki Taniguchi , Shingo Kato , Matahiko Ikeda , Takashi Kaneyama
IPC分类号： H02M3/157 , H02M3/158 , H03K7/08 , H02M1/00
摘要： To provide a power converter which can maintain the stability and the response of the feedback control system, even if the frequency characteristic of the chopper circuit changes according to change of driving condition. A power converter is provided with a chopper circuit which has reactor and switching device; and a control circuit which changes a feedback value of duty ratio of the switching device so that a deviation between a target value of output voltage and a detection value of output voltage approaches to 0, wherein the control circuit changes a frequency characteristic of the feedback control, based on at least any two or more of information on the output voltage, information on an input voltage, and information on duty ratio.

12. 发明授权

US10389245B2 Electric power converter and driving apparatus 有权
公开(公告)号：US10389245B2
公开(公告)日：2019-08-20
申请号：US15576330
申请日：2016-09-15
申请人： Mitsubishi Electric Corporation
发明人： Mai Uenaka , Matahiko Ikeda , Ryota Kondo
IPC分类号： B60L11/18 , H02M3/158 , H02J7/00 , H02J7/24 , H02M1/08 , H02M1/38 , H02M1/00 , H02P3/18 , H02P27/06
摘要： An electric power converter including an electric-power conversion circuit that performs bidirectional conversion of a voltage between a DC power source and a motor and outputs the voltage, a first voltage detector that detects an inter-terminal voltage at the DC power source side of the electric-power conversion unit, a second voltage detector that detects an inter-terminal voltage at the motor side of the electric-power conversion unit, and a controller. The controller includes a first calculator that calculates a main duty, based on a target voltage and the inter-terminal voltage at the motor side, and a second calculator that calculates a sub-duty, based on the main duty, the inter-terminal voltage at the motor side, and the inter-terminal voltage, at the DC power source side, detected by the second voltage detection unit. The controller calculates a duty amount for operating the electric-power conversion unit, based on the main duty and the sub-duty.

13. 发明授权

US10003264B2 DC/DC converter 有权
公开(公告)号：US10003264B2
公开(公告)日：2018-06-19
申请号：US15526114
申请日：2015-12-21
申请人： Mitsubishi Electric Corporation
发明人： Mai Uenaka , Yuta Komatsu , Matahiko Ikeda
IPC分类号： H02M3/158 , H02M1/08 , H02M1/00
CPC分类号： H02M3/1582 , H02M1/08 , H02M3/155 , H02M2001/0009
摘要： In this DC/DC converter, a first controller calculates a first operation value on the basis of a difference between output voltage Vout and a first calculated value calculated on the basis of a detection value of voltage of the charge/discharge capacitor. A second controller calculates a second operation value on the basis of a difference between a charge/discharge capacitor voltage target value Vcf* and charge/discharge capacitor voltage Vcf. In control blocks, addition and subtraction of the first and second operation values are performed, and the conduction rates for switching elements are controlled, to control the output voltage and a charge/discharge capacitor voltage, thereby preventing application of overvoltage to the switching elements.

14. 发明授权

US08803491B2 DC/DC voltage converter and voltage conversion control method therefor 有权
标题翻译： DC / DC电压转换器及其电压转换控制方法
公开(公告)号：US08803491B2
公开(公告)日：2014-08-12
申请号：US14091929
申请日：2013-11-27
申请人： Mitsubishi Electric Corporation
发明人： Masaru Kobayashi , Matahiko Ikeda , Hirotoshi Maekawa
IPC分类号： H02M3/158 , H02M3/156
CPC分类号： H02M3/158
摘要： A power module includes at least two pairs of two power semiconductor units (PSUs), each of which includes a switch element and a rectifier element connected in anti-parallel. One of two PSUs in one pair and one of two PSUs in another pair are connected in series between primary and secondary positive terminals of a DC/DC voltage converter. Another of two PSUs in the one pair and another of two PSUs in the another pair are connected in series between the primary positive terminal and a secondary negative terminal in a direction reverse to a direction of the ones of two PSUs. Control is performed to suppress transient voltage fluctuations that occur in switching between the state where the polarity of a reactor current is only one of positive and negative and the state where the polarity remains one of positive and negative.
摘要翻译：功率模块包括至少两对两个功率半导体单元（PSU），每个功率半导体单元包括开关元件和以反并联方式连接的整流元件。一对中的两个PSU中的一个和另一对中的两个PSU中的一个在DC / DC电压转换器的初级和次级正端子之间串联连接。一对中的两个PSU中的另一个和另一对中的两个PSU中的另一个在与两个PSU的方向相反的方向上串联连接在初级正极端子和次级负极端子之间。执行控制以抑制在电抗器电流的极性仅为正负极的状态和极性保持为正负的状态之间切换中发生的瞬态电压波动。

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