Elevator apparatus including rechargeable power supply and temperature sensitive charging control
First Claim
1. An elevator control apparatus comprising:
- a converter for rectifying AC power to produce DC power;
an inverter for converting the DC power into AC power having a variable voltage and a variable frequency;
DC buses connecting the converter to the inverter;
a controller for controlling a motor, based on the AC power having a variable voltage and variable frequency, the motor operating an elevator;
a chargeable and dischargeable power storage unit for storing and discharging DC power;
temperature detecting means for detecting temperature of the power storage unit;
a charge/discharge control circuit, inferring charging and discharging capacities of the power storage unit with temperature and controlling charging and discharging of the power storage unit based on the inferred charging and discharging capacity for the temperature detected, and issuing, in response, a drive signal; and
a charge/discharge circuit coupling the power storage unit to the DC buses and charging and discharging the power storage unit in response to the drive signal issued by the charge/discharge control circuit, with the DC power supplied from the DC buses and supplying stored DC power to the DC buses, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
An elevator control apparatus includes a converter; an inverter; a controller for controlling a motor based on the AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing the DC power; a thermistor for detecting temperature of the power storage unit; a charge/discharge control circuit for controlling a charging and discharging of the power storage unit based on the detected temperature and issuing a drive signal; and a charge/discharge circuit for charging and discharging the power storage unit based on the drive signal. The elevator control apparatus estimates a charging and discharging capability of the power storage unit and protecting the power storage unit, restraining sudden deterioration of the power storage unit.
-
Citations
17 Claims
-
1. An elevator control apparatus comprising:
-
a converter for rectifying AC power to produce DC power;
an inverter for converting the DC power into AC power having a variable voltage and a variable frequency;
DC buses connecting the converter to the inverter;
a controller for controlling a motor, based on the AC power having a variable voltage and variable frequency, the motor operating an elevator;
a chargeable and dischargeable power storage unit for storing and discharging DC power;
temperature detecting means for detecting temperature of the power storage unit;
a charge/discharge control circuit, inferring charging and discharging capacities of the power storage unit with temperature and controlling charging and discharging of the power storage unit based on the inferred charging and discharging capacity for the temperature detected, and issuing, in response, a drive signal; and
a charge/discharge circuit coupling the power storage unit to the DC buses and charging and discharging the power storage unit in response to the drive signal issued by the charge/discharge control circuit, with the DC power supplied from the DC buses and supplying stored DC power to the DC buses, respectively. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
2. An elevator control apparatus comprising:
-
a converter for rectifying AC power to produce DC power;
an inverter for converting the DC power into AC power having a variable voltage and a variable frequency;
DC buses connecting the converter to the inverter;
a controller for controlling a motor, based on the AC power having a variable voltage and variable frequency, the motor operating an elevator;
a chargeable and dischargeable power storage unit for storing and discharging DC power;
temperature detecting means for detecting environmental temperature;
a charge/discharge control circuit, inferring charging and discharging capacities of the power storage unit with temperature, and controlling charging and discharging of the power storage unit based on the inferred charging and discharging capacity for the temperature detected, and issuing, in response, a drive signal; and
a charge/discharge circuit coupling the power storage unit to the DC buses and charging and discharging the power storage unit in response to the drive signal issued by the charge/discharge control circuit, with the DC power supplied from the DC buses and supplying stored DC power to the DC buses, respectively. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
Specification