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Integrated device having energy feedback and blackout emergent functions

A technology of energy feedback and electric energy feedback, which is applied in the field of elevator control systems and power electronics, can solve problems such as low reliability, high cost of power failure emergency devices, and large energy consumption of the elevator system, so as to promote the construction of a harmonious society, and the reliability is not affected. Impact, the effect of improving emergency safety

Inactive Publication Date: 2010-02-03
盈威力新能源科技(上海)有限公司
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a brand-new topology and control method for the existing elevator system that consumes a lot of energy, and at the same time aiming at the defects of high cost and low reliability of the existing power failure emergency device, so that the existing system is "useless at ordinary times, The control idea and structure of seizing control in the event of a power outage emergency is improved to "normal grid-connected power generation and independent power generation during power outages"

Method used

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  • Integrated device having energy feedback and blackout emergent functions
  • Integrated device having energy feedback and blackout emergent functions
  • Integrated device having energy feedback and blackout emergent functions

Examples

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Embodiment Construction

[0017] Such as image 3 and Figure 4 As shown, the topology of the elevator energy feedback and power failure emergency integrated device includes energy feedback device, storage battery and controller.

[0018] The charging of the battery (group) by the battery controller can be carried out at any time when the power grid is normally powered. Considering the simplicity of the control, charging is generally carried out when the elevator is not running, and the direction of energy flow is shown in image 3 .

[0019] According to the running state of the motor, without loss of generality, the first and third quadrants are defined as the motoring state, and correspondingly, the second and fourth quadrants are defined as the power generation state.

[0020] When the motor runs in the second and fourth quadrants, Udc increases, and when Udc increases to a set threshold Ugm (for example, in a 380V system, this threshold can be set to 680V), that is, when Udc>=Ugm, the energy fe...

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Abstract

An integrated device having energy feedback and blackout emergent functions is composed of an energy feedbacker, a storage battery controller and a storage battery (group). The energy feedbacker is based on the theory of active inversion phase width control, uses lock phase ring technology to track grid synchronization to determine inversion output voltage phase angle and amplitude as PWM controlamount, ensures to feedback electricity to the grid with unit power factor, and supplies electricity in an independent power generation manner when the grid is cut off. The storage battery controlleris based on separated DC / DC conversion to recharge the storage battery (group) and supply electricity to DC bus from the storage battery when the grid is cut off. The energy feedbacker begins to generate electricity within half cycle of blackout of the grid, for the elevator system, the power supply is no different from power supply of the grid. The invention has the following characteristics: 1.the increase of the system cost is small; 2. average system energy saving is over 30%; 3. system wiring is almost unchanged and reliability is not influenced; and 4. emergency security is vastly improved, and the elevator is more humane as a special device.

Description

technical field [0001] The invention relates to an integrated device and control method with energy feedback and power failure emergency functions, belonging to the technical fields of elevator control systems and power electronics. Background technique [0002] At present, the vast majority of elevators in the world do not have automatic emergency functions when encountering power outages / failures. Therefore, we can only face the following consequences: the elevator loses power, the brake is forced to be locked by the machine, the elevator stops suddenly with violent shaking, and the passengers are trapped. Passengers are subjected to great psychological harm, and special groups (the elderly and infirm, heart patients, pregnant women, etc.) may even be life-threatening. It can be said that the importance of elevator power failure emergency devices can be compared with building fire protection systems. [0003] However, existing emergency devices (see figure 1 and figur...

Claims

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Application Information

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IPC IPC(8): B66B5/02B66B1/00H01M10/46H02P3/18
CPCY02E60/10
Inventor 古俊银
Owner 盈威力新能源科技(上海)有限公司
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