SWITCHED-MODE POWER SUPPLY FOR POWERING A FREQUENCY CONVERTER
First Claim
1. A switched-mode power supply for supplying an operating voltage to a frequency-converter, the switched-mode power supply comprising a supply capacitor configured to supply the operating voltage to a control device for generating control signals for semiconductor switches of the switched-mode power supply, the supply capacitor being chargeable through a start-up circuit from a DC link of the frequency converter, the start-up circuit including a current regulator that is configured to control a total current from the DC link to the start-up circuit.
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Abstract
A switched-mode power supply for supplying an operating voltage to a frequency converter includes a supply capacitor configured to supply the operating voltage to a control device for generating control signals for semiconductor switches of the switched-mode power supply. The supply capacitor is chargeable through a start-up circuit from a DC link of the frequency converter. The start-up circuit includes a current regulator that is configured to control a total current from the DC link to the start-up circuit.
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Citations
9 Claims
- 1. A switched-mode power supply for supplying an operating voltage to a frequency-converter, the switched-mode power supply comprising a supply capacitor configured to supply the operating voltage to a control device for generating control signals for semiconductor switches of the switched-mode power supply, the supply capacitor being chargeable through a start-up circuit from a DC link of the frequency converter, the start-up circuit including a current regulator that is configured to control a total current from the DC link to the start-up circuit.
Specification