Energy-saving electricity feedback device and method for an elevator
First Claim
1. An elevator electricity feedback device comprising:
- a sampling unit;
a transmitting unit; and
a central processing unit (CPU),whereinthe sampling unit is electrically connected to an energy supply network of an elevator and the CPU,the sampling unit is configured to sample alternating current (AC) signals of the energy supply network and to input the sampled AC signals to the CPU,the transmitting unit is electrically connected to a motor driver of the elevator, and through an AC resistor, electrically connected to the energy supply network, wherein the transmitting unit is configured to transmit an energy provided by the energy supply network to the motor driver if the motor driver is in an energy consuming state, and the transmitting unit is configured to invert a DC current produced by the motor driver into an AC current and to transmit the AC current to the energy supply network if the motor driver is in an energy generating state such that the energy produced by the motor driver is fed back to the energy supply network, andthe CPU is electrically connected with the transmitting unit and configured to input the AC signals obtained by the sampling unit to the transmitting unit.
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Accused Products
Abstract
An elevator electricity feedback device includes a sampling unit, a transmitting unit, and a central processing unit. The sampling unit is electrically connected with an energy supply network of the elevator and the CPU, the transmitting unit is electrically connected with a motor driver of the elevator and electrically connected with the energy supply network through an AC resistor; and the CPU is electrically connected with the transmitting unit. The transmitting unit is electrically connected with the motor driver of the elevator to feed back an energy of the motor driver to the energy supply network when the motor driver is in an energy generating state so that an effect of conserving energy is achieved. In the energy generating state, a DC current produced by the motor driver is converted into AC current which is transmitted to the energy supply network.
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Citations
13 Claims
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1. An elevator electricity feedback device comprising:
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a sampling unit; a transmitting unit; and a central processing unit (CPU), wherein the sampling unit is electrically connected to an energy supply network of an elevator and the CPU, the sampling unit is configured to sample alternating current (AC) signals of the energy supply network and to input the sampled AC signals to the CPU, the transmitting unit is electrically connected to a motor driver of the elevator, and through an AC resistor, electrically connected to the energy supply network, wherein the transmitting unit is configured to transmit an energy provided by the energy supply network to the motor driver if the motor driver is in an energy consuming state, and the transmitting unit is configured to invert a DC current produced by the motor driver into an AC current and to transmit the AC current to the energy supply network if the motor driver is in an energy generating state such that the energy produced by the motor driver is fed back to the energy supply network, and the CPU is electrically connected with the transmitting unit and configured to input the AC signals obtained by the sampling unit to the transmitting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification