Power conversion device using matrix converter
A technology of power conversion device and frequency converter, which is applied in the direction of output power conversion device, AC power input conversion to AC power output, conversion equipment that can be converted to DC without intermediate conversion, etc., and can solve the problem of rising wiring inductance, etc. problem, to achieve the effect of suppressing overvoltage, realizing miniaturization, and canceling the snubber circuit
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[0034] The following reference Figure 1 to Figure 12 The implementation form of the first invention will be described.
[0035] figure 1 It is a power conversion device using a matrix frequency converter according to the first embodiment of the present invention. The power conversion device consists of a commercial power source 1, a motor as a load 2, an LC filter 3, a matrix frequency converter 1 (4A), and a matrix frequency converter. The inverter 2 (4B) and the control circuit 5 for driving the matrix inverters 4A and 4B are constituted. In addition, i1 represents the current flowing into the LC filter 3 from the matrix inverter 1 (4A), and i2 represents the current flowing into the LC filter 3 from the matrix inverter 2 (4B). In the existing converter system, the commercial power source is first converted into direct current through a rectifier, and then converted into alternating current at any frequency through an inverter. At this time, in order to stabilize the direct c...
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