A laser driving power supply and a method for realizing composite transmission of power signals
A technology for driving power supplies and lasers, applied to output power conversion devices, DC power input to DC power output, instruments, etc., can solve the problems of reducing system flexibility and susceptibility to interference, and achieve high dynamic characteristics and high efficiency Effect
Inactive Publication Date: 2017-02-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
At present, the laser power transmission system mostly adopts the traditional radio communication method. This traditional method is not only susceptible to interference, but also needs to add a batch of equipment, which increases the complexity of the system and reduces the flexibility of the system, thereby limiting the power transmission. The application of the system in some fields, such as wireless charging of drones on the battlefield
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[0026] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Figure 2 to Figure 4The main idea of the laser power transmission system to realize the simultaneous transmission of information and energy is given. In the wireless power transmission system, the energy delivered by the semiconductor laser LD mainly depends on the average power, so a constant current driving method is often used. In order to complete the communication work, LD can make the working current of the laser change according to the modulation signal through internal modulation, so the pulse current driving method is often used. Therefore, the key to realizing the simultaneous transmission of energy and information lies in the control of the LD injection current. For this reason, the flat current that transmits energy and the pulse current that transmits information are superimposed and then injected into the LD to rea...
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The invention discloses a laser driving power supply. The laser driving power supply comprises a slow converter, a quick converter, a semiconductor laser, a first average current control unit, a second average current control unit and a voltage regulator, wherein a first output end of the slow converter and a first output end of the quick converter are together connected with a positive electrode of the semiconductor laser; a second output end of the slow converter and a second output end of the quick converter are together connected with a negative electrode of the semiconductor laser; the negative electrode of the semiconductor laser is grounded; the current of the slow converter is controlled by the first average current control unit; the current of the quick converter and the voltage of a high-voltage side energy storage capacitor are controlled by the first average current control unit and the voltage regulator respectively; straight current is output by the slow converter; positive and negative pulse current is output by the quick converter; resultant current obtained by superposing the straight current and the positive and negative pulse current is received by the semiconductor laser. The semiconductor laser can be driven by the laser driving power supply to perform electric energy transmission and communication transmission simultaneously.
Description
technical field [0001] The invention relates to a laser driving power supply and a method for realizing composite transmission of power signals, and belongs to the technical field of wireless laser power transmission and power conversion. Background technique [0002] With the increasing popularity of electrical equipment, the traditional power supply mode based on contact conduction has problems such as poor mobility, unsafe and reliable. Especially in a system where the electrical equipment and the power supply system are relatively mobile, more additional equipment is required to meet the physical contact, which brings inconvenience to the application of the electrical equipment. Wireless laser power transmission has the advantages of long transmission distance and good orientation, and is suitable for non-contact charging of fast-moving targets such as drones, tanks, and vehicles. [0003] Such as figure 1 The general structure of the laser power transmission system is...
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IPC IPC(8): H02J50/30H02M3/155
CPCH02M3/1582
Inventor 金科周玮阳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS