发明名称 |
Elevator control apparatus controlling charging of a power source with regenerative power |
摘要 |
An elevator control apparatus includes: a converter for rectifying AC power into DC power; an inverter for converting the DC power into AC power having a variable voltage and a variable frequency; a controller for controlling a motor based on the AC power having the variable voltage and the variable frequency, operating an elevator; a power storage unit for storing the DC power; a required power computing circuit for computing required power of the elevator based on a speed command of the controller; a charge/discharge control circuit for issuing a drive signal for changing charge current, supplied to the power storage unit, based on regenerative electric power so as to charge the power storage unit with the regenerative electric power if the required power of the elevator is negative, meaning that the regenerative electric power is available; and a charge/discharge circuit for charging the power storage unit with the regenerative electric power in accordance with the drive signal. Thus, regenerative electric power can be effectively used, contributing to energy savings.
|
申请公布号 |
US6439347(B2) |
申请公布日期 |
2002.08.27 |
申请号 |
US20010771931 |
申请日期 |
2001.01.30 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA;THE TOKYO ELECTRIC POWER COMPANY, INC |
发明人 |
SUGA IKURO;ARAKI HIROSHI;TAJIMA SHINOBU;KOBAYASHI KAZUYUKI |
分类号 |
B66B1/34;B66B1/30;B66B5/00;(IPC1-7):B66B1/06 |
主分类号 |
B66B1/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|