公开(公告)号：US11757283B2

公开(公告)日：2023-09-12

申请号：US17621390

申请日：2019-06-28

Applicant: SAAB AB

Inventor： Valter Nilsson ,  Theodor Hassiakis ,  Ola Bååth

IPC: H02J1/06 ,  H02J7/34

CPC classification number: H02J1/06 ,  H02J7/345 ,  H02J2207/50

Abstract: The invention relates to a method and a system for providing current from a DC power supply to pulsed loads in an array. The array comprises at least two electronic units. Each electronic unit comprises a regulator connected to an energy storage, to a pulsed load and to a charge control unit. The charge control unit is arranged to control the supply of DC current to the pulsed load connected to the electronic unit. The method comprises: selecting a pulse load pattern for the pulsed loads, selecting a charge control sequence by a control system connected to the electronic units and the DC power supply, starting the selected charge control sequence, starting the pulse load pattern, providing DC current from the DC power supply to each electronic unit at different times according to the selected charge control sequence set by the charge control unit.

公开(公告)号：US11143740B2

公开(公告)日：2021-10-12

申请号：US17276612

申请日：2018-09-26

Applicant: SAAB AB

Inventor： Anders Hoeoek ,  Max Wallen ,  Bruno Lumetzberger ,  Valter Nilsson

IPC: G01S7/03 ,  H03F3/24 ,  H03G3/30 ,  G01S13/931 ,  H01Q3/26 ,  G01S13/00

Abstract: The present invention relates to a radar system for a vehicle, a method for controlling a radar system, a computer program product, and a vehicle comprising such a radar system. The radar system comprises an antenna arrangement for transmitting and/or receiving electromagnetic waves, a power supply connected to the antenna arrangement, the power supply being arranged to supply the antenna arrangement with operating power. The radar system further comprises an antenna controller connected to the antenna arrangement, the antenna controller being configured to control an operation of the antenna arrangement. The radar system also comprises an auxiliary power source connectable to the antenna arrangement for supplying the antenna arrangement with supplementary operating power so to increase an output power of the antenna arrangement, and a boost controller connected to the auxiliary power source and to the antenna controller, the boost controller being configured to connect and disconnect the auxiliary power source to/from the antenna arrangement. Hereby presenting a radar system capable of increasing the maximum range of the antenna arrangement during an arbitrary period of time without suffering from too heavy penalties in terms of increased weight or cost.

公开(公告)号：US10298122B2

公开(公告)日：2019-05-21

申请号：US15113650

申请日：2014-01-23

Applicant: SAAB AB

Inventor： Niklas Janehag ,  Valter Nilsson

IPC: G01S7/28 ,  H02M3/156 ,  G01S7/02 ,  H02M1/12 ,  H02M1/15

Abstract: A switching mode DC/DC power converter for delivering a direct current to a pulse radar unit. A first switching element connects and disconnects the power converter from a power source in each cycle of the power converter. An inductor charges and discharges in each cycle. A capacitor maintains a DC output voltage as the inductor charges and discharges in each cycle. A second switching element transfers energy from the inductor to the capacitor when the first switch disconnects the switching mode power converter from the power source. A control loop regulates the voltage with a time constant, to a predetermined value by controlling the first switching element. An on time for the first switching element in each cycle is chosen to allow the current through the inductor to fall to zero in each cycle. The cycle is shorter than RF pulse duration and time constant of the control loop is longer than the RF pulses.

公开(公告)号：US20170012524A1

公开(公告)日：2017-01-12

申请号：US15113650

申请日：2014-01-23

Applicant: SAAB AB

Inventor： Niklas Janehag ,  Valter Nilsson

IPC: H02M3/156 ,  G01S7/28 ,  H02M1/12

CPC classification number: H02M3/156 ,  G01S7/02 ,  G01S7/28 ,  H02M1/126 ,  H02M1/15 ,  H02M2003/1566

Abstract: A switching mode DC/DC power converter for delivering a direct current to a pulse radar unit. A first switching element connects and disconnects the power converter from a power source in each cycle of the power converter. An inductor charges and discharges in each cycle. A capacitor maintains a DC output voltage as the inductor charges and discharges in each cycle. A second switching element transfers energy from the inductor to the capacitor when the first switch disconnects the switching mode power converter from the power source. A control loop regulates the voltage with a time constant, to a predetermined value by controlling the first switching element. An on time for the first switching element in each cycle is chosen to allow the current through the inductor to fall to zero in each cycle. The cycle is shorter than RF pulse duration and time constant of the control loop is longer than the RF pulses.

Abstract translation: 用于向脉冲雷达单元传送直流电的开关模式DC / DC电力转换器。 第一开关元件在功率转换器的每个周期中将功率转换器与电源连接并断开。 电感器在每个周期中充电和放电。 当电感器在每个周期中充电和放电时，电容器保持直流输出电压。 当第一开关将开关模式功率转换器与电源断开时，第二开关元件将电能从电感器传递到电容器。 控制回路通过控制第一开关元件将时间常数的电压调节到预定值。 选择每个周期中第一个开关元件的准时开关，以允许每个周期中通过电感器的电流降至零。 该周期比RF脉冲持续时间短，控制回路的时间常数大于RF脉冲。