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US 2019/0165709 A1Published application
Brake device for ac generator
AssigneeNtn Corporation
InventorMasaji HANEDA
Life of this patent
Estimating the term…
Abstract
A brake device for an AC generator, whose speed can be flexibly controlled, and can function properly even when functions of the control unit are lost.
Claims11
A brake device for an AC generator comprising:
- a triac (TR) that has a first terminal (T1) connected to one of, and a second terminal (T2) connected to the other of a pair of transmission lines of the AC generator;
- first switching units (Q1, Q2) inserted in and connected to a current path, connected in parallel between a gate (TG) and the second terminal (T2) of said triac (TR);
- and
- a second switching unit (Q3) which can switch between an ON-enabled state and an off-state of said first switching units (Q1, Q2), wherein
- when said first switching units (Q1, Q2) are in the ON-enabled state by said second switching unit (Q3), if the absolute value of a line-to-line voltage exceeds the prescribed value, said first switching units (Q1, Q2) turn on using the line-to-line voltage as a driving power source, and in accordance with the polarity of the line-to-line voltage, a trigger current flows in said gate (TG) through said current path, which turns on said triac (TR), and a short-circuit current flows in between the transmission lines through said triac (TR).
2 more elements
A brake device for an AC generator comprising:
- a triac (TR) that has a first terminal (T1) connected to one of, and a second terminal (T2) connected to the other of a pair of transmission lines of the AC generator;
- a switching unit (Q11) inserted in and connected to a current path, in parallel between a gate (TG) and the second terminal (T2) of said triac (TR);
- and
- a control unit (cs) which can switch on/off of said switching unit (Q11), wherein
- when said switching unit is on by said control unit (cs), a trigger current flows in said gate (TG) through said current path according to the polarity of a line-to-line voltage, which turns said triac (TR) on, and a short-circuit current flows between the transmission lines through said triac (TR).
2 more elements
Dependencies are inferred from the claim text.