An automatic line voltage drop compensation circuit for aircraft ground static variable power supply
A technology of static variable power supply and compensation circuit, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., to achieve the effects of preventing overcompensation, high compensation accuracy, and fast response speed
Active Publication Date: 2017-09-19
山东芯驰能源科技有限公司
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Problems solved by technology
[0007] The present invention proposes an automatic circuit voltage drop compensation circuit for aircraft ground static variable power supply to solve the problem of output lead voltage drop compensation of aircraft ground power supply. Aircraft ground power supply includes 400HZ intermediate frequency AC static variable power supply, 28V DC static variable power supply and 270V DC Static power supply
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] Such as Figure 4 As shown, the automatic line voltage drop compensation circuit of the aircraft ground static variable power supply in this embodiment includes:
[0037] The output current sampling circuit is used to sample the load current and convert it into a corresponding sampling voltage V is ;
[0038] Voltage given circuit for given reference voltage V ref1 ;
[0039] A reference voltage compensation circuit, configured to collect and transf...
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The present invention proposes an automatic line voltage drop compensation circuit for static variable power supplies on the ground of an aircraft, comprising: an output current sampling circuit for sampling the load current and converting it into a corresponding sampling voltage Vis; a voltage setting circuit for setting a reference voltage Vref1; a reference voltage compensation circuit, used to select whether to compensate the reference voltage Vref1 and adjust the size of the compensation amount according to the size of the sampled voltage Vis acquired and transformed by the output current sampling circuit, and deliver the compensated voltage Vref2 to Voltage loop control circuit; the greater the load current, the higher the converted sampling voltage Vis, and the greater the compensation amount. The invention does not require remote sampling; it can compensate in sections; it can set the maximum compensation voltage to prevent over-compensation; it can set different compensation slopes according to different cables; it can set different compensation slopes according to different loads; the compensation response speed is fast, High compensation accuracy.
Description
technical field [0001] The invention relates to the field of aircraft power supplies, in particular to an automatic line voltage drop compensating circuit for aircraft ground static variable power supplies. Background technique [0002] The output of the aircraft ground power supply is mainly 115V, 400HZ intermediate frequency alternating current and 28V direct current. The national military standard requires the output voltage of the 400HZ intermediate frequency AC static variable power supply to be 108.0V-118.0V, and the output voltage of the 28V DC static variable power supply to be 22.0V-29.0V. Considering the power supply requirements of avionics equipment, both AC and DC indicators are evaluated at the end of the cable. [0003] When the power supply leaves the factory, its adjustment sampling terminal is usually connected to the output terminal (such as figure 1 ). This limits the voltage regulation capability of the power supply even with very short leads, and reg...
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IPC IPC(8): G05F1/56
Inventor 刘宝磊
Owner 山东芯驰能源科技有限公司