Details

Inquiry

MDVG is a new type of dynamic reactive power compensation device with high cost performance developed by Chengdu Malone Electric Co., Ltd., which is a new product based on advanced power electronic technology. The DVG device is connected in parallel to the power grid, which is equivalent to a controllable reactive current source. The reactive compensation current generated by the DVG device can quickly follow the change of the load reactive current, automatically compensate the reactive power required by the power grid system, and filter out the low-order harmonics in the system.

(I) On-site application

A commercial plaza in Chengdu has a complete set of MDVG design. The project is located in a road in Chengdu, with a total construction area of 400000 square meters, including three parts: Grade A boutique office buildings, large shopping centers and theme blocks.

MDVG数字无功发电机

(II) product model

Product type M-DVG-380-100/A represents Mellon Electric DVG products with a rated voltage of 380V and a rated capacity of 100kvar,

A: Single module product

B:20kVar modules consisting of whole cabinet products

C:30kVar modules consisting of whole cabinet products

D:50kVar modules consisting of whole cabinet products

E:70kVar modules consisting of whole cabinet products

(III) product features

High reliability: the products are strictly manufactured according to military standards, and the equipment is more efficient and reliable;

2. Faster response speed: The full response time of MDVG is 10ms, which can quickly output inductive or capacitive reactive power, has a good compensation effect on the rapidly changing impact load, and can suppress the impact of voltage flicker.

3, wider operating range: dynamic two-way (-1~1) continuous adjustment of reactive power, that is, from the rated inductive conditions to the rated capacitive conditions of continuous output of reactive power, can achieve any range of compensation.

4, higher safety: no over-compensation, no under-compensation, no resonance.

Better harmonic characteristics: MDVG equipment itself does not produce additional harmonics, while filtering out the 13th and below harmonics generated by the system.

6. Strong anti-interference: cabinet structure, the surface is treated by electrostatic spray technology, and the anti-electromagnetic interference ability is strong.

7. Strong controllability: man-machine interface and remote communication (Ethernet, RS485;Modbus/electric master protocol) are adopted to facilitate operation and management.

8. High availability: modular design, drawer structure, high power density, easy installation and maintenance.

(IV) product use

Products have been widely used in rail transit, data centers, hospitals, high-end office buildings, hotels, stadiums, music theaters, airports, chemicals, power generation and other industries.

(V) Product parameters

Technical parameters of work compensation (MDVG)
Control system Special Sign	Switching frequency	20KHZ	Sex Can Refers Standard	Rated voltage	380V ×(1 ± 20%)
	Controller	DSP FPGA		Rated compensation capacity (single module)	50kvar、70kvar
	control algorithm	Instantaneous Reactive Sliding Window DFT		Electrical wiring	3L N
knot Structure Special Sign	Protection level	IP40		Grid frequency	50±2.5HZ
	Color	Light gray (customizable)		power factor	-1～ 1
	Installation method	Indoor, floor-mounted		harmonic compensation effect	≥97%
	Cooling mode	forced air cooling		Response time	＜10ms
Ring Environment	Ambient temperature	-30 ℃ ~ 60 ℃		compensation effect	Power factor> 0.98 (three-phase balanced full load)
	Relative humidity	≤ 90% without condensation		Operation mode	Single or multiple parallel operation
	Noise	≤ 70dB		Incoming mode	up-line
	Altitude	≤ 1500m, between 1500~4000m, according to international GB/T3859.2 for every 100m increase, the power is reduced by 1%		Protection mode	It has a slow start control loop to avoid excessive limit starting current, input over-voltage, over-current, over-heat, DC bus over-voltage, overload automatic current limit protection