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Bidirectional energy storage inverter

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1500kw and 3000kw bi-directional inverter

System Diagram

1.Main circuit adopt USA TI company DSP chip and IGBT from Mitsubishi,driving

protection is from Japan Mitsubishi chip,the part of off-grid output adopt isolation transformer,safe and reliable.

2.With SPWM pulse width modulation technology,pure sine wave output,power factor

approaches 1,low current harmonic content

3.MPPT(Maximum Power Point Tracking)Technology

4.Inverting current close-cycle control,power to control and adjustable

5.With wide input voltage range to adapt to the needs of different occasions

6.Have a full range scheme of power protection and perfect self-detection and self- protection function.When there’s something wrong with the system,it will automatically

stop working.

7.Close circuit structure, the maximum efficiency> 94%

Technic parameter

Type	XNSGA-1500KS	XNSGA-3000KS
Isolation	Low frequency transformer isolation
Max. DC input power	1550KWp	3200KWp
Max. DC input open-circuit voltage	900Vdc
Input voltage range	450Vdc~800Vdc
Nominal AC output power	1500KW	3000KW
THD of AC current	<3%(nominal power)
Power factor	>0.99(nominal power)
Max. Efficiency	95%
Nominal AC output voltage	400Vac±15%
Nominal AC output frequency	50Hz±1%
Automatic restart time	2min(adjustable)
Protection	Input reverse connection protection,output short circuit protection, overheat protection,overload protection
Comm. interfaces	Ethernet
Operating Temp.	-20℃~+50℃
Relative humidity	0~95%
Altitude(m)	≤6000meters(Over 2000 meters to reduce the using amount)
Cooling method	Controlled forced-air cool
Noise	≤60dB
Protection degree	IP20(indoor)

XYH-PCS series Bi-directional storage Inverter modular type

XYH series Bi-directional storage Inverter is the key equipment for energy exchange between energy storage battery components and power grid. It can accept power grid dispatching instructions, realize charging and discharge management of energy storage battery, and realize power grid peak shaving / frequency modulation function. It can monitor the real-time characteristics of load and realize peak shaving and valley filling. At the same time, it can provide reactive power support, make up for voltage defects, control power quality and so on to ensure the stable operation of power grid system. It has the ability to resist short-term impact and can carry completely unbalanced load to realize smooth power supply.

Economical and efficient

Advanced three-level topology, maximum efficiency is 99%, single machine power is 500kW / 630kw
Independent modular architecture and convenient maintenance
Small volume size and low initial investment
Modular sales, integrated advantage sharing

Safe and reliable

Integrated EMS, battery maintenance function, active energy regulation and extended battery life
It has the function of low voltage and high voltage ride through, and has strong adaptability to the power grid
It has anti-island protection to ensure the safe operation of power grid
It has many types of protection, which can help to prevent overcurrent, over-temperature, overvoltage, overload, short circuit, lightning, grounding and so on.

Intelligent and friendly

Fast power response, ± 100% charge & discharge conversion 20ms, faster scheduling
Short communication link time and various choices
It supports the integration of RS485, Ethernet, EtherCAT, CAN, ProfiNet and other communication ports
Support IEC61850 protocol and optical fiber communication
It has VSG, VF, PQ, black start and other functions

The main power circuit adopts three-level topology, and the topology diagram is shown in the figure below

Modular structure

Technic parameter

Parameter table	XYH-PCS/500	XYH-PCS/630
DC side parameters
Maximum DC power(kW)	560kW	693kW
Maximum voltage of DC bus (V)	1000V	1000V
Maximum current at DC side (A)	948A	1195A
DC voltage operating range (V)	550～1000V	550～1000V
DC voltage ripple coefficient (%)	<2%	<2%
AC side parameters (grid connection)
Rated power (kW)	500kW	630kW
Maximum output power (kW)	550kW	693kW
Rated output current	760A	957A
Maximum output current	912A	1148A
Rated grid voltage (V)	Three phase three wire	Three phase three wire
Allowable grid voltage (V)	-15%～10% or 323V-418V	-15%～10% or 323V-418V
Rated grid frequency (Hz)	50Hz/60Hz（±2Hz）	50Hz/60Hz（±2Hz）
Current total harmonic distortion rate (%)	<3%（Rated power）	<3%（Rated power）
Power factor	>0.98(leading or lagging)	>0.98(leading or lagging)
Charge discharge conversion time (ms)	<20ms	<20ms
AC side (off grid)
Voltage unbalance (V)	380V±3%	380V±3%
Voltage unbalance (%)	<2%, short-term 4%	<2%, short-term 4%
Voltage total harmonic distortion rate (%)	＜3%( Linear load)	＜3%( Linear load)
Maximum reachable efficiency (Hz)	50Hz/60Hz	50Hz/60Hz
System
Maximum reachable efficiency	99%	99%
Overload capacity	1.1 times long term, 1.2 times 1 minute	1.1 times long term 1.2 times 1 minute
Allowable ambient temperature (℃)	-25 ℃～+65 ℃（Derating is required when the temperature exceeds 55 ℃）	-25 ℃～+65 ℃（Derating is required when the temperature exceeds 55 ℃）
Allowable relative humidity (%)	0～95%，No condensation	0～95%，No condensation
Maximum working altitude	5000 m (>3000 m Derating)	5000 m (>3000 m Derating)
Overall size width× high × deep (mm)	6931590601	6931590601
Machine weight (kg)	550kg	550kg
Degree of protection	IP20	IP20
Cooling mode	Forced air cooling	Forced air cooling
Display and communication
Communication interface	RS485, Ethernet, EtherCAT,CAN	RS485, Ethernet, EtherCAT,CAN
Interface	HMI	HMI
Communication protocol	MODBUS-RTU /MODBUS-TCP/CAN2.0B	MODBUS-RTU /MODBUS-TCP/CAN2.0B

XYH storage bi-directional inverter

Bi-directional inverter can not only convert the DC power into AC power,but also can invert the AC power to DC power.Bi- directional inverter mainly control the battery’s charging and discharging,at same time it is the core control equipment.Bi-directional inverter can apply in the grid ties power system which has the requirement of power storage function.The power storage system is for the the emerging load or important load charging.It can combine with the string inverter and then construct the separated PV power system.

Bi-directional inverter charged by batteries ,convert the DC power into AC power.Constructing the grid at the basis of the AC general line.String grid inverter can automatically test the solar battery array with enough power or not.Testing the grid whether meet the need of grid power.When meeting the need can go into the grid power mode,feeding power to the AC general line.,then the work of starting the system was completed.When normally operating .Bi-grid inverter will test the power using of the load .The power feeding to the grid from string grid inverter firstly for the load charging.If there is rest power ,BI-grid inverter will convert it into DC power and charge the battery.If the power feeding to the grid is not enough for the load,Bi-grid inverter will convert the DC power supplied by battery into AC power and feed into the AC general line for the using of the load.

Technic parameter

Type		XSX10KS	XSX20KS	XSX50KS	XSX100KS	XSX250KS	XSX500KS	XSX1000KS
AC side parameter
Rated capacity		10kW	20kW	50 kW	100 kW	250kW	500Kw	1000Kw
Overload		11kW	22 kW	55 kW	110 kW	275kW	550kW	1100kW
On-grid charging mode
Rated grid voltage		400 Vac
Grid voltage range		330~460Vac
Grid frequency		50Hz/60Hz
Total harmonic distortion(THD)		<3%
Power factor		≥0.99
off-grid mode
Rated output voltage		400 Vac
Output voltage accuracy		<3%
Output frequency		50Hz/60Hz
Output overvoltage		>460 Vac
Output under-voltage		<330 Vac
DC voltage range
Max DC power		11kW	22 kW	55 kW	110 kW	275kW	550kW	1100kW
DC voltage range		450-1000Vdc
Max DC current		25A	50A	122A	244A	611A	1320A	2640A
DC current ripple		<5%
System
Max efficiency	96.6%
Temperature	-25~+60°C
Humidity	0~95%,non condensing
Noise	<50dB
Protection	Polarity inverse,short circuit,island efficiency.overheat,overload.ground fault protection
Cooling method	Forced cooling
Protect degree	IP20
Indication	Touching screen
Communication	RS485(MODBUS protocol)
W×D×H(mm)	5805151250		6506101560	8006002060	10008002060	20008002060	35008002060		60008002060
Weight (kg)	150		300	700	900	1300	2500		4500

1. Product introduction

The continuous development of economy has brought about a large amount of energy consumption. The energy crisis and environmental pollution are becoming increasingly serious. The development and large-scale application of new energy has become an inevitable trend of global energy applications. New energy power generation has the disadvantages of low energy density, instability and randomness. The development of energy storage technology can well solve the above problems, making it possible to apply new energy power generation on a large scale. Liquid flow battery is a new type of environment-friendly energy storage battery, which has the advantages of long service life and many times of charging, making it have broad market prospects in energy storage systems. The bidirectional energy storage converter is an energy conversion device between the energy storage battery and the power grid, so the research on the fluid flow energy storage bidirectional energy storage converter is of great significance.

2.Product principle

Application of isolated bidirectional energy storage converter system

Application of non isolated bidirectional energy storage converter system.

3. Product features

(1) High efficiency and energy saving: the highest efficiency can reach 95%, with a wide voltage input range, which can adapt to other types of batteries such as liquid flow batteries;

(2) Safe and reliable: multiple fault protection mechanism, real-time monitoring, ensuring safe, reliable and stable operation, supporting high and low voltage crossing, rapid power regulation, dynamic power compensation, and strong adaptability of the power grid;

(3) Super load carrying: the virtual synchronous operation technology is adopted, and the response is millisecond level, which can quickly withstand sudden load and equipment startup impact. The maximum short-term impact resistance is more than 3 times of the rated energy storage power, ranking first in the industry;

(4) Smart and friendly: through intelligent control start and stop technology, it supports multiple operation modes, parallel and off grid operation, new energy access, and grid connection of generator sets. In energy storage cooperation, the number of operating units can be adjusted according to the load.

4. Product application

It can be used as a backup power supply for communication facilities, military facilities, hospital buildings, residential areas and other occasions; Its excellent charging and discharging characteristics make it suitable for the power supply of electric vehicles; It can be used for power supply and energy storage in remote areas; At the same time, it can form an energy storage system with photovoltaic power generation and other new energy power generation systems to improve the power quality of the grid and adjust the peak valley difference of power consumption of the grid.

Technic parameter

Equipment model	XNSX-50KS	XNSX-100KS	XNSX-250KS	XNSX-500KS	XNSX-1000KTL
Rated power	50kW	100kW	250kW	500kW	1000kW
DC side parameters
Maximum power	55kW	110kW	275kW	550kW	1100kW
DC charging voltage	DC 0~800V
DC discharge voltage	DC 50V~850V(Customizable)
Maximum Discharge current	200A	400A	1000A	2000A	4000A
Ripple	≤1%
AC side parameters (grid connection)
Rated voltage	AC 380V±15%，Three phase five wire system
Rated frequency	50Hz
Total current Harmonic distortion	THD<4%
power factor	≥0.99
AC side parameters (off grid)
Rated voltage	Line voltage AC 380V
Rated frequency	50Hz
Output voltage distortion	<2%(linear load)
With unbalanced load capacity	100%
Overload capacity	120% 60s，150% 10s，200% 2s，300% Immediate protection
Efficiency
Maximum efficiency	95%				98%
Protection function
DC input protection	Have
AC output protection	Have
Overvoltage protection	DC TypeⅡ/AC TypeⅡ
Island protection	Have
Overheating protection	Have
Other
Isolation mode	Built in isolation transformer				No Isolation transformer
User interface	LCD touch screen
Communication interface	Ethernet/RS485 (MODBUS protocol)
High/low voltage ride through	Have
Degree of protection	IP20
Working temperature	－20℃～45℃
Relative humidity	0～95%(non condensing)
Cooling mode	Forced air cooling
Operating altitude	2000m(derating over 2000m)
Dimension *(W D * H) (mm)**	8006501940	100010002060	180010001900	220010002060	240010002060

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