High-voltage motor parallel connection chopping and double-inversion speed-governing energy-saving controller
A high-voltage motor and inverter technology, which is applied in the direction of AC motor control, control system, and adjustment of electrical variables, can solve problems such as current sharing, and achieve the effect of reducing the impact of harmonics
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[0030] see figure 1 , The high-voltage motor parallel chopper and double inverter speed regulation energy-saving controller related to the present invention is composed of two parts: a parallel chopper and a double inverter.
[0031] see figure 1Part A: parallel chopper: the parallel chopper is composed of smoothing reactors L1, L2, insulated gate bipolar transistors S1, S2, fast recovery diodes D1, D2 and capacitors C1, C2. Its purpose is to increase the DC low voltage u1 input to the positive terminal P1 and the negative terminal E of the parallel chopper to the high voltage u2 required by the inverter. One end of the smoothing reactor L1 and L2 is connected in parallel to the input positive terminal P1 of the parallel chopper, and the other end of the smoothing reactor L1 is connected to the positive end of the insulated gate bipolar transistor S1 and the anode of the fast recovery diode D1, The other end of the smoothing reactor L2 is connected to the positive terminal...
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