Permanent-magnet controllable power generation topological circuit based on geminate transistor topology and control method
A technology of topology circuit and control method, applied in electronic commutation motor control, control of generators through magnetic field changes, control of generators, etc., can solve the problems of bus voltage pumping, reducing motor power generation efficiency, etc. Weight, effect of wide power generation voltage output range
Inactive Publication Date: 2019-10-01
NORTHWESTERN POLYTECHNICAL UNIV +1
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Problems solved by technology
[0003] In the prior art, the circulating current phenomenon in the circuit reduces the power generation efficiency of the motor; the bus voltage pumping phenomenon caused by the unsmooth freewheeling channel
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Embodiment Construction
[0044] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0045] The technical scheme adopted by the present invention is: comprising twelve MOSFET switch tubes of the same type; the twelve MOSFET switch tubes form six bridge arms, each bridge arm is composed of two MOSFET switch tubes in reverse series, and the S poles are connected; The D poles of the two bridge arms are connected to form three upper and lower bridge arms; the D poles of the three upper bridge arms are connected to the positive pole of the power supply, and the D poles of the lower bridge arm are connected to the negative pole of the power supply; the three upper and lower bridge arms are connected to each other. The midpoints of the bridge arms are respectively connected with phase A, phase B and phase C of the generator.
[0046] In the electric state, compared with the control logic of the traditional topology, two more switch tubes need to be turn...
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The invention relates to a permanent-magnet controllable power generation topological circuit based on a geminate transistor topology and a control method. 12 MOSFET switch tubes are adopted, and eachof the upper and lower bridge arms of each phase is formed by reversely connecting two MOSFET switch tubes in series, and thus, a permanent-magnet controllable power generation topological circuit based on a geminate transistor topology is obtained. In the electric state and in the power generation state, the relevant MOSFET switch tubes on the bridge arms are opened to form a current path and afreewheeling loop according to the six working states of the permanent magnet brushless motor in one working cycle. Figure 1 is the topological structure of the circuit. The control method integratingan inverter of a permanent magnet brushless motor and a post-stage power converter not only can realize the integration of motor starting and power generation, but also can realize controllable rectification of the output voltage, reduce the volume and weight of the power generation system and meet the requirement of the power supply system of an unmanned aerial vehicle for high power density.
Description
technical field [0001] The invention belongs to a permanent magnet controllable power generation method, and relates to a permanent magnet controllable power generation topology circuit and a control method based on paired tube topology. Background technique [0002] The rapid development of the UAV field has created a great demand for high power density starter power generation systems. At present, the commonly used power generation methods include three-stage electric excitation motor power generation and permanent magnet synchronous motor power generation. The three-stage power generation structure includes auxiliary exciter, main exciter and main generator. The disadvantage is that the structure is relatively complicated. The size and weight are relatively large. In the permanent magnet synchronous motor power generation mode, the magnetic field cannot be adjusted, and the engine directly drives the permanent magnet synchronous motor to generate electricity. The post-st...
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Login to View More IPC IPC(8): H02P6/08H02P27/08H02P9/30
CPCH02P6/085H02P9/305H02P27/085
Inventor 谭博王西坡赵冬冬刘卫国陈哲
Owner NORTHWESTERN POLYTECHNICAL UNIV