Abstract:
The present invention relates to a method for reducing electromagnetic interference radiated from a power supply arrangement comprising a plurality of switching mode power supply units (1, 2) connected to an external device (3), wherein each switching mode power supply unit (1, 2)comprises a ground point (A, B). The radiate electromagnetic interference is reduced by synchronizing a switching frequency of each switching mode power supply unit (1, 2), such that all of said synchronized switching mode power supply units (1, 2) have an identical switching frequency, thereby reducing the difference in electric potential between said ground points (A, B). The present invention also relates to a corresponding power supply arrangement.
Abstract:
Power supply arrangement for distribution of power from a DC power source having a positive terminal and a negative terminal to at least a first and a second DC power consumer, comprising: a first DC power consumer connected to said negative terminal of said DC power source by means of at least a first return line, a first DC-DC switching power converter connected to said first DC power consumer, and connected to said positive terminal of said DC power source,a second DC power consumer connected to said negative terminal of said DC power source by means of at least a second return line, a second DC-DC switching power converter connected to said second DC power consumer, and connected to said positive terminal of said DC power source,wherein a unit comprising a capacitor connected in parallel with an electrical device is arranged in each of said first and second return lines, wherein said electrical device has a diode function, whereby circulating ground loop currents are prevented.
Abstract:
A radar system comprising a switching mode power converter (21), wherein a pulse radar unit (20) is configured to transmit RF pulses with a pulse repetition frequency, and wherein the power converter (21) comprises a switching controller (34), which is configured to control at least one switching element (31, 35), and wherein the switching controller (34) is configured to receive a frequency modulated input signal (S in ), wherein the modulation frequency of said input signal (S in ) is configured to be derived from the pulse repetition frequency of the radar unit (20).
Abstract:
Power supply arrangement for distribution of power from a DC power source having a positive terminal and a negative terminal to at least a first and a second DC power consumer, comprising: a first DC power consumer connected to said negative terminal of said DC power source by means of at least a first return line, a first DC-DC switching power converter connected to said first DC power consumer, and connected to said positive terminal of said DC power source,a second DC power consumer connected to said negative terminal of said DC power source by means of at least a second return line, a second DC-DC switching power converter connected to said second DC power consumer, and connected to said positive terminal of said DC power source,wherein a unit comprising a capacitor connected in parallel with an electrical device is arranged in each of said first and second return lines, wherein said electrical device has a diode function, whereby circulating ground loop currents are prevented.
Abstract:
Power supply arrangement for distribution of power from a DC power source having a positive terminal and a negative terminal to at least a first and a second DC power consumer, comprising: a first DC power consumer connected to the negative terminal of the DC power source, a first DC-DC switching power converter connected to the first DC power consumer, and connected to the positive terminal of said DC power source, a second DC power consumer connected to the negative terminal of the DC power source, a second DC-DC switching power converter connected to the second DC power consumer, and connected to the positive terminal of said DC power source, wherein a unit comprising a capacitor connected in parallel with an electrical device is arranged in each of the first and second return lines, wherein said electrical device has a diode function, whereby circulating ground loop currents are prevented.
Abstract:
A method for reducing electromagnetic interference radiated from a power supply arrangement. A plurality of switching mode power supply units are connected to an external device. Each switching mode power supply unit includes a ground point. The radiated electromagnetic interference is reduced by synchronizing a switching frequency of each switching mode power supply unit, such that all of the synchronized switching mode power supply units have an identical switching frequency, thereby reducing the difference in electric potential between the ground points. A corresponding power supply arrangement.
Abstract:
A radar system comprising a switching mode power converter (21), wherein a pulse radar unit (20) is configured to transmit RF pulses with a pulse repetition frequency, and wherein the power converter (21) comprises a switching controller (34), which is configured to control at least one switching element (31, 35), and wherein the switching controller (34) is configured to receive a frequency modulated input signal (S in ), wherein the modulation frequency of said input signal (S in ) is configured to be derived from the pulse repetition frequency of the radar unit (20).