Introduction: CDI-CH series crane special frequency converter is a crane special frequency converter developed on the basis of CDI-E series frequency converter.
Product Details
Selection instructions for special inverter for cranes
Since the crane should have a large starting torque, under normal circumstances, the selection principle of the crane inverter is to reserve a certain capacity appropriately according to the actual load situation.
Crane feedback energy processing
When the crane lifting mechanism runs downward, the motor will be in a state of regenerative power generation, and its energy will be fed back to the inverter side, which will inevitably lead to the rise of the DC voltage of the inverter
In the same field situation, this part of the regenerative energy is treated, and most of the braking resistors are used for energy discharging. When selecting the model, it should meet the requirements of maximum descending weight, maximum descending stroke and fastest descending speed
Beg. According to the law of conservation of energy, the electrical energy generated by the electric motor should be equal to the release of the potential energy of the heavy material and equal to the thermal energy consumption of the resistance (without taking into account the power loss). So just calculate the weight potential
The power that can be generated is the required braking power. For the power generated by the potential energy of the falling object is easy to calculate.
PE = NM ╳ VM
PW = PE ╳ （1-η）
The power produced by the potential energy of PE falling in watts
PW braking power in watts
NM Maximum Descending Weight Unit: Cow
The fastest VM downturn speed is in meters/second
η The internal power coefficient of the motor and inverter is generally 20%
After calculating the braking power PW, then configure the corresponding braking unit and braking resistance according to the manual provided by the Delixi manufacturer.
Illustrate:
CDI-CH series crane special inverter 110kW and below built-in braking unit, 132kW and above external braking unit.
The company respects the enterprise spirit of "practicality, hard work and responsibility", and creates a good corporate environment with integrity, win-win, and business philosophy, and takes a new management model, perfect technology, thoughtful service, and excellent quality as the foundation for survival. We always adhere to: customer first, serve customers attentively, and insist on impressing customers with their own services. Always adhering to the business philosophy of "integrity, win-win", relying on excellent prices, excellent quality, fast delivery and pre-sales consultation and after-sales service to win the trust of our customers.
This article introduces Delixi/Delixi crane special inverter CDI-CH series 110kW products, if you are interested in Delixi/Delixi crane special inverter, please also contact our customer service, we look forward to your call, hope our technology and service can bring you a better experience.
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