Elevator energy storage device
An energy storage device and technology of storage device, applied in the field of elevator control, can solve the problems of large speed and amplitude of voltage rise, uncontrollable DC bus voltage, etc., so as to reduce the fluctuation amplitude and rate of DC bus voltage and controllable DC bus voltage. Effect
Active Publication Date: 2013-09-04
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Problems solved by technology
Since the voltage loop is in a saturated state, the DC bus voltage is actually uncontrollable, and the speed and magnitude of the voltage rise may be relatively large
Method used
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[0033] figure 1 Shown is the schematic diagram of the structure of an embodiment of the elevator energy storage device of the present invention applied, wherein, the label 25 is the elevator energy storage device of the present invention, including: an electric energy storage device 8 that can be composed of a supercapacitor or a storage battery, etc., composed of Charge and discharge circuit 9 composed of bidirectional DC / DC power supply, charge and discharge control device 10, detection unit 12 of electric energy storage device, charge and discharge current detection unit 13, DC bus current detection unit 14, inverter output three-phase current detection unit 15 , DC bus voltage detection device 16, switching elements 22, 23 of the charging and discharging circuit. figure 1 Among them, the dotted line 28 represents the communication connection between the elevator energy storage device 25 and the elevator control device 26. If the feed-forward signal obtained by adding the e...
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The invention discloses an elevator energy storage device which comprises a rectifier, an inverter, an elevator control device, a charge and discharge circuit, an electric energy storage device and charge and discharge control device, wherein the charge and discharge control device controls the charge and discharge circuit to charge and discharge a direct-current bus through outputting a drive signal by using a preset bus voltage command value as a target value. The preset bus voltage command value can change, the change direction of the bust voltage command value is determined according to the direction of a charge and discharge current command value of the electric energy storage device, and the change rate of the bus voltage command value is determined by the size of the charge and discharge current command value of the electric energy storage device. According to the invention, recovered energy of an elevator can be effectively utilized, and amplitude and rate of bus voltage fluctuation can also be effectively avoided and avoided.
Description
technical field [0001] The invention relates to the field of elevator control, in particular to an elevator energy storage device which utilizes an electric energy storage device to reuse the regenerative energy of the elevator. Background technique [0002] Generally in the elevator, such as figure 1 As shown, for the elevator to go down with a full load, that is, when the weight of the car 6 is greater than that of the counterweight 5, the elevator car goes down; or when the elevator car goes up with a light load, that is, when the weight of the car 6 is less than the weight of the counterweight 5, the elevator car goes up, and the potential energy will be converted into kinetic energy Provided to the elevator motor 1, so that the elevator motor 1 is in the power generation state to generate regenerative energy. If this part of the regenerative energy is not disposed of, it will cause the DC bus voltage to rise and cause damage to the inverter 3 and other electronic compon...
Claims
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IPC IPC(8): B66B1/30
Inventor 刘玉兵奚良陈玉东朱元晨
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD