公开(公告)号：US3903465A

公开(公告)日：1975-09-02

申请号：US41935273

申请日：1973-11-27

Applicant: HITACHI LTD

Inventor： IBAMOTO MASAHIKO ,  KURIYAMA SIGERU

IPC: H02M1/06 ,  H02M3/135 ,  H02M3/137 ,  H02P7/29 ,  H02P5/16

CPC classification number: H02M3/137 ,  H02M1/06 ,  H02P7/29 ,  Y10S388/902 ,  Y10S388/917 ,  Y10S388/92

Abstract: An improved chopper control system is proposed. In the system, a d.c. current supply to a d.c. motor is controlled through a chopper which is provided with a main thyristor and an auxiliary thyristor for turning off the main thyristor. The chopper allows a main circuit current to flow during a short period when the auxiliary thyristor is rendered conductive. A rectangular wave oscillator and a differential circuit are provided to apply a chopper-off signal to the auxiliary thyristor at regular intervals and a phase shifter is provided to apply a chopper-on signal with a controlled phase to the main thyristor coacting with the rectangular wave oscillator. The application of the chopper-off signal to the chopper is prohibited by a prohibit circuit when an output signal is produced by a constant voltage element for detecting a high voltage across the chopper. By the thus arranged control system, a fine control of the duty cycle of the chopper can be performed.

Abstract translation: 提出了一种改进的斩波控制系统。 在系统中， 目前供应给d.c. 电动机通过斩波器进行控制，该斩波器设有用于关断主晶闸管的主晶闸管和辅助晶闸管。 当辅助晶闸管导通时，斩波器允许主电路电流在短时间内流动。 提供矩形波振荡器和差分电路，以规律的间隔向辅助晶闸管施加斩波信号，并提供移相器以将具有受控相位的斩波信号施加到与矩形波共同作用的主晶闸管 振荡器 当通过用于检测斩波器两端的高电压的恒定电压元件产生输出信号时，禁止电路将斩波信号施加到斩波器。 通过如此布置的控制系统，可以进行斩波器的占空比的精细控制。

公开(公告)号：US3872367A

公开(公告)日：1975-03-18

申请号：US38926573

申请日：1973-08-17

Applicant: HITACHI LTD

Inventor： KURIYAMA SIGERU ,  HASHIMOTO HIDEYUKI

IPC: B60L7/00 ,  B60L15/08 ,  H02P3/08 ,  H02P7/29

CPC classification number: B60L15/08 ,  H02P3/08 ,  H02P7/29 ,  Y02T10/645

Abstract: A controlling device for an electric car in which comprises a main closed circuit including a battery, a thyristor chopper circuit and a series-wound electric motor, and means for controlling the commutation rate of the thyristor chopper circuit for control of an output torque from the direct current electric motor wherein said device is provided with a maximum current limiting circuit for detecting a load current of the thyristor chopper circuit and acting on the latter, the limiting circuit having a maximum set value in dependence on an accelerator instruction during plugging.

Abstract translation: 一种电动汽车的控制装置，其特征在于，包括主电路，包括电池，晶闸管斩波电路和串联电动机，以及用于控制所述晶闸管斩波电路的换流速度的装置， 直流电动机，其中所述装置设置有用于检测晶闸管斩波电路的负载电流并作用于其上的最大限流电路，所述限制电路根据插入期间的加速器指令具有最大设定值。

公开(公告)号：US3659119A

公开(公告)日：1972-04-25

申请号：US3659119D

申请日：1971-03-19

Applicant: HITACHI LTD

Inventor： KASAMA RYOJI ,  KURIYAMA SIGERU

IPC: H02M1/06 ,  G05F1/56 ,  H02M3/135 ,  H02P7/29 ,  H03K17/00

CPC classification number: H02M3/135

Abstract: A circuit arrangement for controlling a thyristor chopper which extinguishes a main thyristor by discharging the charge stored in a capacitor to the main thyristor at a predetermined instance in the opposite polarity, comprising means for detecting the terminal voltage of said capacitor and calculating the maximum ability for extinguishing the main thyristor and means for detecting the load current of the chopper, thereby enabling the extinction of the thyristor in the extinguishing ability of the capacitor.

Abstract translation: 一种电路装置，用于控制晶闸管斩波器，该晶闸管斩波器在相反极性的预定情况下将存储在电容器中的电荷放电到主晶闸管，使主晶闸管熄灭，包括用于检测所述电容器的端子电压并计算最大能力 熄灭主晶闸管和检测斩光器的负载电流的装置，从而使晶闸管在电容器的熄灭能力下消失。