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US 2026/0025084 A1Published application
Ac/dc converter
AssigneeMazda Motor Corporation
InventorChienru LUNG
Life of this patent
Estimating the term…
Abstract
An AC/DC converter including a PFC circuit. The PFC circuit includes: a reactor; a first thyristor and a second thyristor; at least one switching element; and a capacitor. When an input of an alternating-current voltage is started, with a function of the switching element being made inactive, a controller executes a soft start by adjusting a pulse width when each of the thyristors is turned ON by changing a timing when each of the thyristors is turned ON based on a phase angle.
Claims19
An AC/DC converter comprising:
- a PFC circuit including:
- a reactor;
- a first thyristor;
- a second thyristor;
- at least one switching element that includes a diode;
- and
- a capacitor that is arranged between a pair of pieces of direct-current output wiring on an output side relative to the reactor, the first thyristor, the second thyristor, and the at least one switching element, and
- a controller configured to:
- control turning ON and OFF the first thyristor and the second thyristor in accordance with alternately repeated positive and negative half-cycles of an alternating-current voltage;
- control turning ON and OFF the at least one switching element to convert the alternating-current voltage into a predetermined direct-current voltage;
- and
- when an input of the alternating-current voltage is started, with a function of the at least one switching element being made inactive, execute a soft start by adjusting a pulse width when each of the first thyristor and the second thyristor is turned ON by changing a timing when each of the first thyristor and the second thyristor is turned ON based on a phase angle.
9 more elements
A method comprising:
- controlling turning ON and OFF a first thyristor and a second thyristor in accordance with alternately repeated positive and negative half-cycles of an alternating-current voltage;
- controlling turning ON and OFF at least one switching element to convert the alternating-current voltage into a predetermined direct-current voltage;
- and
- when an input of the alternating-current voltage is started, with a function of the at least one switching element being made inactive, executing a soft start by adjusting a pulse width when each of the first thyristor and the second thyristor is turned ON by changing a timing when each of the first thyristor and the second thyristor is turned ON based on a phase angle.
1 more element
Dependencies are inferred from the claim text.