A bidirectional charging and discharging conversion circuit and its realization method
A technology for converting circuits and implementing methods, applied in the field of energy storage systems, can solve problems such as the inability to meet the high-power electricity demand of servo system generator sets, and achieve the effects of improving reliability and efficiency, improving efficiency, and simplifying circuit structure.
Active Publication Date: 2021-12-07
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Problems solved by technology
[0004] Most of the current mainstream DC / DC converters are unidirectional DC / DC converters. The reason why unidirectional DC / DC converters work in one direction is that the power switch tube is unidirectional, and the main power circuit has unidirectional conduction. Diodes, so it can only realize the one-way flow of energy, not reverse, which cannot meet the high-power power demand of the servo system generator set
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[0033] Aiming at the working characteristics and power demand of the servo system, the invention provides a high-reliability, fast-response bidirectional charge-discharge conversion circuit. The circuit only needs two driving waveforms, has a simple structure, and in the case of a complex installation space, it can make full use of the limited conditions to realize the function of charging and discharging the circuit, and achieve fast response and high reliability.
[0034] Specifically, such as figure 1 As shown, the present invention includes switch tube Q1, switch tube Q2, switch tube Q5, switch tube Q6, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, capacitor C1, transformer T, inductor L, capacitor C2 and capacitor C3.
[0035] The positive output terminal of the servo system generator set is connected to one end of capacitor C1, the drain of switch tube Q1, the cathode of diode D1 and the cathode of diode D3, the anode of diode D1 is connected to the source...
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The invention discloses a bidirectional charging and discharging conversion circuit, which includes a voltage conversion module and a rectification module. The voltage conversion module is connected with the generator set of the servo system. In the step-down condition, it is used to supply normal power to the connected loads, and at the same time, transfer the surplus energy to the rectifier module; in the step-up condition, the voltage of the energy storage system is raised, and It is used to supply power to the generator set of the servo system and suppress the voltage drop of the busbar. Rectification module: In the step-down condition, the surplus energy is rectified to charge the energy storage system; in the step-up condition, the voltage of the energy storage system is transmitted to the voltage conversion module. The invention also discloses a method for realizing the bidirectional charging and discharging conversion circuit. The invention reduces the volume and weight while simplifying the circuit structure, realizes the function of charging and discharging the circuit, achieves fast response and high reliability performance, and meets the high power consumption demand of the servo system.
Description
technical field [0001] The invention relates to a bidirectional charge-discharge conversion circuit and a realization method thereof, belonging to the field of energy storage systems. Background technique [0002] Servo mechanism is the collective name for the subsystems of launch vehicle flight control actuators in my country. The electromechanical servo integrated system connects the servo drive system and the power system, and the unified generator set supplies power to all loads, such as the drive system, daily loads and Other pulse loads, to achieve the purpose of comprehensive utilization of system energy and unified management, is a kind of full power system. Its advantages include long service life, convenient maintenance, wide application range, high power and strong load capacity. However, with the continuous expansion of the capacity of the servo system and the rapid growth of the power load, the DC output of the system generator set has a large fluctuation range,...
Claims
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IPC IPC(8): H02M3/335H02M1/38
CPCH02M1/38H02M3/33523H02M3/33584H02M1/0051H02M1/385Y02B70/10
Inventor 徐秀华郑再平杨斌王开春李旭阳
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS