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  • Name: Integrated control device MDPA
  • 编号: a001
  • Views : 77

product description

MDPA product is a comprehensive solution for low-voltage distribution network, the use of advanced power electronics technology to adjust the three-phase load imbalance, but also real-time detection of reactive current in the load, through the IGBT inverter and The reverse compensation current, to ensure that the current from the grid into the active current balance, reduce power pollution, to achieve "green" power supply.

a)working principle

DPA real-time detection of the load current through the external current transformer, the detected current is positive and negative sequence decomposition, extraction of unbalanced current and reactive current, these signals into the DSP to calculate the DPA need to output the integrated compensation current, And then generate PWM signal to drive IGBT action, the load current is re-assigned to the grid side at the same time, to achieve reactive power compensation. The core function of the product is to be able to compensate for the current conversion speed of 500 times faster than the speed of action to achieve the real-time impedance adjustment. DPA working principle diagram is as follows:

b) MDPA main function

1) adjust the three-phase unbalanced current, three-phase unbalance compensation function

2) compensation part of the three-phase distribution line reactive current to improve the power factor.

c) MDPA technical features:

1) Powerful, power quality one-stop solution

Ø hree-phase unbalance compensation function

Ø Voltage compensation function

Ø dynamic real-time tracking system reactive power changes, no compensation system reactive power, will not appear, undercurrent phenomenon

Ø Bidirectional compensation system reactive power

Ø Harmonic filter function (option)

Ø Support remote data transfer function (option)

2) excellent compensation effect

Ø DPA is the active compensation device, is the use of modern power electronic devices IGBT current source device, from the mechanism to avoid the traditional capacitor components to bring the resonance phenomenon, more stable and safe.

Ø High-speed DSP + FPGA full digital control system, rapid response to load changes, automatic real-time adjustment, the response time is less than 15 milliseconds.

3) The use of three-level topology, compared with the traditional two-level inverter, three-level output voltage step waveform makes the compensation current closer to the sine wave;

4) DPA with perfect protection: overvoltage protection, undervoltage protection, overcurrent protection, overheating protection, short circuit protection.

5) modular design, easy to expand, easy to transport, easy maintenance, engineering design and installation of small workload.

6) low noise design

7) small size, light weight.

d) product application

Company MDPA products have been in a number of city power supply companies have application performance, the use of good results. Can effectively solve the outdoor column transformer low voltage 400V system voltage pass rate is not high problem, effectively solve the client current imbalance problem, optimize the operating conditions of low voltage distribution; DPA can compensate for reactive power, improve power factor.

 

product model

 

product model

Product number

MDPA-030

MDPA-050

MDPA-100

Rated voltage rating

400V

Input phase voltage range

-40%~+20%

Grid frequency

50Hz(range:45Hz~55Hz)

Machine efficiency

>97.5% (Rated full load)

size

600mm×390mm×1100mm

custom made

Three - phase balance compensation capability

Unbalance degree<3% (capacity range)

Device rated current

50A

75A

100A

Response time

<10ms

CTClaim

0.5 or more, secondary side current 5A, outdoor type

HMI

7 inch LCD screen

Installation method

H-bar, F-bar (installation inclination angle less than 5 degrees)

Line approach

Box bottom line

cooling method

Forced air cooling

Protection class

IP54

noise

<70dB(A)

Protective function

Overvoltage protection, undervoltage protection, short circuit protection, inverter bridge reverse protection, over compensation protection, lightning protection and so on

Protocol

Modbus Agreement (adjustable according to project progress)

Remote cloud

Support wifi (optional)

Relative humidity

Maximum 95%, no condensation

Ambient temperature

-25℃~55℃