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Direct-current power supply converter suitable for airplane power supply and control method of direct-current power supply converter

A DC power conversion, aircraft technology, applied in the field of aviation power, can solve problems such as common ground

Pending Publication Date: 2022-03-25
NANJING MEGAMPERE ELECTRIC SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this system, the high-voltage DC power supply also has the problem of sharing the ground with the non-isolated intermediate frequency power supply, that is, there is a problem that the bipolar power supply (the output of the high-frequency isolation module power supply of the previous stage) that will supply power to the inverter will be converted into a power supply that is connected to the inverter. The problem of high-voltage DC power supply with common ground

Method used

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  • Direct-current power supply converter suitable for airplane power supply and control method of direct-current power supply converter
  • Direct-current power supply converter suitable for airplane power supply and control method of direct-current power supply converter
  • Direct-current power supply converter suitable for airplane power supply and control method of direct-current power supply converter

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the power input bus is divided into upper and lower parts by two series capacitors C1 and C2. The input capacitor C1, inductor L1, switch tube S1, diode D1, and output capacitor C3 form an energy transmission circuit; input capacitor C2, inductor L2, The switch tube S2, the diode D2, and the output capacitor C3 form another energy transmission path. A new combined circuit structure is formed in which the input of two energy transmission circuits is connected in series and the output is connected in parallel. In this embodiment, a high-frequency field effect transistor (MOSFET) is selected as the switch tube.

[0023] According to the state of the two switches, the circuit has four different working modes, including: S1 and S2 are turned on at the same time, S1 and S2 are turned off at the same time, S1 is...

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Abstract

The invention discloses a direct-current power supply converter suitable for airplane power supply, which adopts a non-isolated direct-current topology to convert positive and negative bipolar direct-current power supply into a stable unipolar direct-current power supply, realizes common-ground connection of input and output, and realizes balanced power supply of the positive and negative bipolar power supply. The technical problems that the system efficiency and the power density are influenced by adopting an isolation converter in an aircraft power supply system, and a non-isolation converter is difficult to solve the problem that a direct-current power supply is connected with the common ground of the aircraft power supply system are solved.

Description

technical field [0001] The invention belongs to the field of aviation power supplies, and in particular relates to a DC power converter. Background technique [0002] The power supply system of a modern aircraft usually includes multiple types of power sources, including the main power supply (main generator) installed inside the fuselage, the emergency power supply, and the external surface power supply connected to the aircraft during ground / ship maintenance and startup. With the innovation and development of aircraft technology, existing military and civil aviation aircraft have different power supply systems (hereinafter referred to as "electric system"), commonly used include 28V low-voltage DC power supply system, 400Hz constant frequency AC power supply system, 360-820Hz frequency conversion AC power supply system, 270V high-voltage DC power supply system, and hybrid power supply system composed of two or more types of power supply, etc. [0003] There is a conversio...

Claims

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Application Information

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IPC IPC(8): H02M3/158H02M1/32H02M1/08
CPCH02M3/158H02M1/32H02M1/08
Inventor 丰瀚麟
Owner NANJING MEGAMPERE ELECTRIC SCI & TECH
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