Alternating current motor drive circuit and electric vehicle drive circuit
An AC motor and drive circuit technology, applied in the direction of AC motor control, engine-driven traction, electric vehicles, etc., can solve the problems of difficult miniaturization, difficult circuit miniaturization, and circuit large-scale, to improve performance and conversion efficiency. good effect
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[0040] figure 1 It is a configuration diagram showing an embodiment of the present invention.
[0041] As shown in the figure, in this example, a current-source rectifier circuit 2 and a voltage-source inverter 3 are connected to the output of a three-phase AC generator 1, and an AC motor 4 is driven by the output thereof. For example, as disclosed in Non-Patent Document 2, the combination of a current-type rectifier circuit 2 and a voltage-source inverter 3 is called an indirect matrix converter (Indirect Matrix Converter), etc., and a current-type rectifier circuit is used as the rectifier circuit. This does not require the use of Figure 10 Large components such as the capacitor 13 shown.
[0042] In addition, two bridge arms 6 in which a switching element 6 a and a diode 6 b are connected in antiparallel are connected in series to the output of the rectifier circuit 2 . And, the positive terminal of the storage battery 5 is connected to the middle point of the two bridg...
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