Voltage converting device, computer readable recording...

Details Voltage converting device, computer readable recording... Voltage converting device, computer readable recording...

2008-07-15

2008-07-15

Ip, Paul (Department: 2837)

Electricity: motive power systems

Braking

Dynamic braking

C318S564000, C318S700000, C318S801000, C361S023000

Reexamination Certificate

active

07400104

ABSTRACT:
A control device detects whether or not an up-converter fails, based on a DC voltage from a voltage sensor, an output voltage from a voltage sensor, and a duty ratio in controlling switching of NPN transistors. If a failure in the up-converter is detected, the control device then controls an inverter and an AC motor such that regenerative electric power generation in the AC motor is prohibited.

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