Online space vector state display device for monopole asynchronous motor
A space vector and state display technology, which is applied in the control of electromechanical transmission devices, measuring devices, motor generator control, etc., can solve the problem that the state of space vector cannot be displayed in real time, and achieve the effect of direct signal processing and simple structure.
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specific Embodiment approach 1
[0030] Specific implementation mode one: the following combination Figure 1 to Figure 8 Describe this embodiment, the online space vector state display device for single-phase asynchronous motor described in this embodiment, it includes A-phase voltage conversion circuit 1, B-phase voltage conversion circuit 2, microprocessor 3 and display 4,
[0031] The A-phase voltage conversion circuit 1 is used to collect the voltage signal of the A-phase winding, and the B-phase voltage conversion circuit 2 is used to collect the voltage signal of the B-phase winding.
[0032] The common-ground unipolar signal output end of the positive amplitude signal of the A-phase voltage conversion circuit 1 is connected to the first analog signal input end of the microprocessor 3, and the common-ground unipolar signal of the negative amplitude signal of the A-phase voltage conversion circuit 1 The output terminal is connected to the second analog signal input terminal of the microprocessor 3,
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specific Embodiment approach 2
[0040] Specific implementation mode two: the following combination figure 1 This embodiment is described. This embodiment is a further description of Embodiment 1. The A-phase voltage conversion circuit 1 and the B-phase voltage conversion circuit 2 have the same structure. The A-phase voltage conversion circuit 1 is used as an example to illustrate the structure of the voltage conversion circuit.
[0041] The A-phase voltage conversion circuit 1 is composed of a voltage divider circuit 1-1, a forward rectification circuit 1-2, a reverse rectification circuit 1-3, a first transformer 1-4 and a second transformer 1-5,
[0042] The voltage divider circuit 1-1 is used to divide and extract the voltage signal of the A-phase winding. The forward voltage signal output terminal of the voltage divider circuit 1-1 is connected to the input terminal of the forward rectifier circuit 1-2, and the forward rectifier circuit 1- The signal output terminal of 2 is connected to the voltage sign...
specific Embodiment approach 3
[0044] Specific implementation mode three: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1 or 2, the microprocessor 3 is composed of four common ground A / D conversion units 3-1 and two positive and negative amplitude synthesis units 3-2 composition,
[0045] The analog signal input terminals of the four common ground A / D conversion units 3-1 are respectively the four analog signal input terminals of the microprocessor 3, wherein two common ground A / D conversion units 3-1 are respectively used to The positive and negative amplitude signals of the A-phase winding are converted into digital signals and output to a positive and negative amplitude synthesis unit 3-2. A positive and negative amplitude synthetic signal output terminal,
[0046] The other two common-ground A / D conversion units 3-1 are respectively used to convert the positive and negative amplitude signals of the B-phase winding into digital signa...
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