Soft start circuit and soft start method of voltage source type inverter
The invention discloses a soft start circuit and a soft start method of a voltage source type inverter. The circuit comprises a three-phase full-bridge thyristor rectifier connected with a three-phasemain power supply, an energy storage electrolytic capacitor which is connected with the output end o...
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| creator | WANG LIANG XIAO MUXUAN |
| description | The invention discloses a soft start circuit and a soft start method of a voltage source type inverter. The circuit comprises a three-phase full-bridge thyristor rectifier connected with a three-phasemain power supply, an energy storage electrolytic capacitor which is connected with the output end of the three-phase full-bridge thyristor rectifier, a soft start alternating current contactor whichis connected to any two phases of the three phases, a voltage transformation rectifying circuit which is connected with the soft start alternating current contactors in series and connected with theenergy storage electrolytic capacitor in parallel, and a digital control unit which is used for driving the three-phase full-bridge thyristor rectifier and controlling the soft start alternating current contactors to be opened and closed. According to the invention, the circuit has the advantages of no impact current, strong adaptability to the power grid, small harmonic content in the soft startperiod, high power factor an |
| format | Patent |
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The circuit comprises a three-phase full-bridge thyristor rectifier connected with a three-phasemain power supply, an energy storage electrolytic capacitor which is connected with the output end of the three-phase full-bridge thyristor rectifier, a soft start alternating current contactor whichis connected to any two phases of the three phases, a voltage transformation rectifying circuit which is connected with the soft start alternating current contactors in series and connected with theenergy storage electrolytic capacitor in parallel, and a digital control unit which is used for driving the three-phase full-bridge thyristor rectifier and controlling the soft start alternating current contactors to be opened and closed. 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| language | chi ; eng |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | Soft start circuit and soft start method of voltage source type inverter |
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