Charger

摘要

Disclosed is a charger including a first rectifying portion that rectifies an alternating power and outputs the rectified power to a neutral point of a 3-phase motor; a second rectifying portion/inverter that charges output power of the first rectifying portion in a high-voltage battery in a charging mode and drives the 3-phase motor by switching the charged power of the high-voltage battery in a drive mode; a high-voltage charging controller that controls the first rectifying portion and second rectifying portion/inverter so as to charge the high-voltage battery in the charging mode; and a DSP (Digital Signal Processor) that controls the second rectifying portion/inverter so as to drive the 3-phase motor in the drive mode, and controls the high-voltage charging controller so as to charge the high-voltage battery in the charging mode.

主权项

1. A charger comprising:
a motor having a Y-connection; a rectifier configured to rectify an alternating current power and output the rectified power to a neutral point of the motor; a rectifier/inverter configured to charge output power of the rectifier in a first battery in a charging mode and drive the motor by switching the charged power in the first battery in a drive mode; a first controller configured to control the rectifier and rectifier/inverter to charge the first battery in the charging mode; and a second controller configured to control the rectifier/inverter to drive the motor in the drive mode and to control the first controller to charge the first battery in the charging mode, wherein the rectifier includes:
first diodes configured to bridge-rectify the alternating current power;a switching device configured to switch output power of the first diodes to the neutral point of the motor under control of the first controller;a filter configured to filter the alternating current power and to output the filtered power to the first diodes; anda second diode configured to form a closed loop when the rectifier/inverter charges the output power in the first battery, and wherein the first controller includes:
a first detector configured to detect a charging state of the first battery;a first generator configured to generate a charging reference voltage using an output of the first detector and the first diodes;a second detector configured to detect a charging current of the first battery output from the rectifier; anda second generator configured to generate a switching signal according to an output of the first generator and second detector and to output the switching signal to the rectifier and the rectifier/inverter.