TH59869B - Power converter - Google Patents

Abstract

DC60 (15/12/54) This invention provides a power converter which can inhibit the reduction of Capacitor voltages for smoothing and suppressing incoming currents over time. Power recovery When it is judged that the bus voltage Vdc detected by the DC voltage detector unit 24 is equal or less than the predetermined reference voltage. The 20 such regulator would then allow the DC 23 load control unit to stop the DC 30 load. This invention provides a power converter that can inhibit the reduction of the Capacitor voltages for smoothing and suppressing incoming currents over time. Power recovery When it is judged that the bus voltage Vdc detected by the DC voltage detector unit 24 is equal or less than the predetermined reference voltage. The 20 such regulator will allow DC 23 load control unit to stop the DC 30 load.

Claims (7)

Disclaimer (all) which will not appear on the advertisement page: EDIT 07/09/2016 1. Power variator consisting of An active converter with a semiconductor component receiving AC voltage from an AC power source, rectifying the AC voltage to DC voltage and increasing the DC voltage. Let be a nominal rated DC voltage. A smoothing capacitor is connected to the output side of the converter. Active, with a DC load connected to both ends of the capacitor for the Smoothing and smoothing the DC voltage output from the active converter, the current limiting resistor is connected between the AC power source and the active converter. And limits the current flowing from an AC power source. A switching unit is connected in parallel with a current limiting resistor. A set of DC voltage detectors which detects the bus voltage that is The voltage across the capacitor for smoothing and A control device that controls the voltage boosting operation of the DC voltage being output from the active converter, where The regulator sets a reference voltage based on the voltage level of the DC voltage being output from the active converter. The control device initiates the switching unit in the event that AC voltage is output from the AC power source and stops the switching unit in case of an AC voltage. A power failure condition in the AC power supply and the control device stops the DC load when the voltage is determined. Of the bus detected by the detecting unit, the DC voltage is equal or less than the voltage Reference as predetermined before switching to a path where resistance was provided for Electricity is restricted by allowing the control device to stop the switching unit. Yes, when there is a failure in the supply of the position. 2. The power converter according to claim 1, in the event that the active converter is operated to increase the voltage, such control equipment Will subtract the bounds based on detecting errors caused by variations in The portion of the output voltage of the active converter and the reference voltage is set. 3. The power converter according to claim 2, where in the event that the active converter is Work in increasing the voltage, but there is Performing AC voltage rectification, the control device estimates the AC voltage of AC power based on the bus voltage detected by the unit. Detects DC voltage, minus boundary values considering false positives caused by variability. Change the output voltage portion of the active converter and set the reference voltage by The estimated AC voltage is applied. 4. Power converters in accordance with any of the claims 1 to 3, provided that the active converter stops operating. Work on increasing the voltage and Transitioned into operations in rectification Such a control device will reduce the level of increase. Voltage in a phased manner and in each condition reduced in a hierarchical manner when Decide that the control value of the voltage rise relative to the active converter is less. The bus voltage detected by the DC voltage detector unit, the control device will Estimate the AC voltage of an AC power source based on the bus voltage and set The reference voltage is based on the estimated AC voltage. 5. A power converter in accordance with any of the claims 1 to 4, where the semiconductor component is a substance. Wide band spaced semiconductor 6. Power converter according to claim 5 where the wide band spaced semiconductor is made of SiC, GaN or diamond ----- -------------------------------------- 1.Power variant consisting of Active converters with a semiconductor component receiving AC voltage from the power supply. AC, rectification is made to the AC voltage to DC voltage and DC voltage to the determined DC voltage without rules. A smoothing capacitor is connected to the output side of the converter. Active, with a DC load connected to both ends of the capacitor for the Smoothing and smoothing the DC voltage output from the active converter, the current limiting resistor is connected between the AC power source and the active converter. And limited The extent of the current flowing from an AC power source, a switching unit connected in parallel with a current limiting resistor. A set of DC voltage detectors which detects the bus voltage that is The voltage across the capacitor for smoothing and A control device that controls the voltage boosting operation of the DC voltage being output from the active converter. The control device will trigger the switching unit in the event that AC voltage is output from the AC power source and stop the switching unit. Switch in the event of a power failure in the AC power supply and the regulator stops the DC load when the bus voltage at Detected by the detector unit, the DC voltage is equal or less than the reference voltage as Have predetermined 2. Power Diversifier according to claim 1, where the regulator sets the rated voltage in accordance with the voltage rating of the DC voltage being output from the active converter. F 3. Power converter according to claim 2, in which case the active converter has an operation to increase the voltage, the control device will subtract the boundary value based on the examination. Erroneous catches caused by variations in parts of The output voltage of the active converter and set the reference voltage 4. Power converter according to claim 2 or 3, in the event that the active converter does not perform an increase in voltage but has To rectify the AC voltage operation, the control device estimates the AC voltage of the AC power source based on the bus voltage detected by the detector unit. Portion of the output voltage of the active diverter and set the reference voltage according to Estimated AC Voltage 5. Power converter according to claim 2 to 4, in the event that the active converter stops operating in the voltage increase and Changed through to operations in rectification. Such a control device will reduce the level of increase. The bus voltage detected by the DC voltage detector unit, the control device will Estimate the AC voltage of an AC power source based on the bus voltage and set The reference voltage is based on the estimated AC voltage. 6. Power converters according to claim 1 to 5, where the semiconductor component is a semiconductor with a wide band spacing. 7. Power Diversifier according to claim 6, where such wide band gap semiconductors are made of SiC, GaN or diamond.