因技术 得品质 以服务

1. 因技术得品质以服务 RUSeries AFE Unit & Regeneration Unit JiaWei Yang 08/2014

2. Product Introduction 1 Part of the product 2 3 4 Product Specifications Contents Applications of product

3. 1.Product Introduction-Basic Concept What is Regeneration Unit ？ Regeneration Unit , or The Energy Feedback Unit , the full name for “special energy feedback unit of frequency converter ”, is a kind of special inverter braking unit, is mainly used for large inertia frequency speed regulation system, help renewable electricity back to the grid produced in the process of the motor reducing the speed,help system achieve rapid braking .

4. 1.Product Introduction-Basic Concept Classification: 1.Parallel energy feedback refers to feedback device and VVVF used in parallel. 2.Tandem energy feedback refers to feedback device and VVVF used in tandem, usually say "active front end rectifier and inverter"AFE（Active Front End）

5. 1.Product Introduction- Our product RUSeries AFE Unit & Regeneration Unit arise at the historic mo- ment. RU600 was developed and launched in 2013, high-performance, active energy feedback unit。 It can be used in conjunction with the inverter,can replace the traditional braking resistors, reducing heat generation.The effect of energy-saving is obvious. While minimizing the input side harmonics, Reduce the pollution to the grid in the use process of inverter. With a converter to achieve four- quadrant operation.

6. 1.Product Introduction- Our product Energy flow diagram Energy consumption braking mode Energy feedback mode AFE Mode Power supply AFE VVVF Motor Power supply VVVF Motor Powersupply VVVF Motor Regene-ration unit Energy resistance RU630 Motor driven Braking RU600

7. 1.Product Introduction- Our product A Structure Design B Easy to use C Guaranteed by design • Galvanized chassis effective safety ground • Wall-mounted installation program supports and floor • Independent duct design • Efficient design parameters • Pluggable terminal block design. Simplify loading and unloading. • Design of new featur-es and ease of keyb-oard • IPD complete development process • Optimized thermal design model • Power chip thermal assessment program • A common platform of design and manufacture to ensure the quality .

8. Product Introduction 1 Part of the product 2 3 4 Product Specifications Contents Applications of product

9. 2.Part of the product- The whole system diagram Drive and protection circuits DC-Bus Functional circuits and optical isolation

10. 2.Part of the product -RU600 Wiring Diagram The three phase grid ground Multi-function terminals Input Others: Standard RS485 communication terminals , Modbus protocol support External expansion card ,Multi-machine communication interconnection Communication port ground

11. Product introduction 1 Part of the product 2 3 4 Product specifications Contents Applications of product

12. Elevator light load upward, overload downward ,motor in the state of renewable energy, installation RU600 / RU630 can make Energy back to the grid, to save energy. 3. Applications of product - Typical applications

13. Energy feedback unit for applications requiring quick stop occasions, such as rolling mills, large planer, machine tools, presses, etc. 3. Applications of product - Typical applications

14. Regeneration unit as inverter device for wind power, the electricity coming from wind power generator can be sent back to the utility grid by means of regeneration unit . Regeneration unit used in photovoltaic power generation, the electricity coming from photovoltaic panels can be sent back to the utility grid by means of regeneration unit . 3.Applications of product - Other applications Energy feedback unit used in UPS power supply, EPS power supply, AFE units used in applications where a stable DC voltage is needed, energy feedback unit is used as a power inverter for local load electricity generation.

15. Regeneration unit RU630 was used in the Construction Machinery Company In Guangxi. RU600 was used in Motor Test System in our R&D laboratories and product plants . 3.Applications of product – applications in spot R&D Laboratories and production plants in A4

16. 3. Applications of product - Operating Mode • Wiring a CH1： Inverter input current waveform when RU600 is not used CH3： AFE input current waveform • Automatic switching of the rectifier / feedback operation mode based on the bus voltage change, • the current flow in both directions, the bus voltage is held constant, • the power factor is close to 1. • And can be limited to a single direction rectifier mode, provided for electrical constraints for irreversible system, such as diesel generators.

17. 3. Applications of product - Operating Mode • Wiring b • ： RU630-11kW CH1： DC-bus voltage. CH3： feedback current • When braking the motor, when the bus voltage exceeds the set voltage, the capacitor energy back to the grid. Improve the use of energy-efficient to achieve energy saving，Compared with braking resistor .

18. 3. Applications of product - Operating Mode Well,let’s watch a video.

19. Product Introduction 1 Part of the product 2 3 4 Specifications and attention Contents Applications of product

20. 4.Specifications and attention-Naming Rules

21. 4.Specifications and attention-Shape and Size • D1=249 W =316 W1=240 H =595 H1=573 RU630 4-M6×12 RU600 4-M8×14

22. 4.Specifications and attention- Selection guide • When using the four-quadrant mode rectifier mode, in accordance with the following selection table : • Dedicated to energy feedback mode (instead of braking resistor), you can press the selection table: Other products are in development.

23. 4.Specifications and attention-Technical Feature • Low harmonic value ：Advanced PWM technology, harmonic value of the current less than 5%. • Power Factor: Real-time monitoring of the grid, to ensure that the power factor> 0.95(usually 0.98). • Group control features: supports two sets of parallel, system expansion, networking group control • Dynamic performance: solve fast transient braking problems, improve system braking performance • Personalized solution:Solve lift type equipment overload problem • Automatic current limiting: Automatically switched according to the external environment and usage • Perfect solution in parallel circulation:reduce energy consumption, improve performance • Perfect voltage loop control strategy:to ensure the DC-bus voltage of frequency converter accurate • and stable

24. Frequency Convert Soft-Drive Inductance Three-phase grid IGBT Model Fuse Switching Power 4.Specifications and attention-Attention • Check program： • First power off • Then check carefully • First outside and then inside • First control and then power part capacitor • Run time, to ensure • Running lights are lit • The control logic is normal • Operating current and the detected current is consistent • Input and Output terminals are normal The red dashed box for RU600

25. 4.Specifications and attention-Attention In my experiment, encountered some problems, and share 5 tips with you: Tip1.It is different with the inverter, RU600 require real-time monitoring of the grid voltage.If it shows “LP”,after power on ,firstly check the grid voltage detection line wiring is properly connected to the grid. Tip2. When using an external inductor,grid detection wire needs to be connected to the grid side. Tip3. Energy feedback unit and inverter applications in parallel mode, need to use Commonmode Choke in series with the bus, or will cause circulation, affecting the normal use. Tip4. Power normal, keyboard display properly on RU600, but the bus voltage and bus voltage of the inverter are inconsistent, to confirm the internal fuse is damaged or not. Tip5. It is different from the inverter, losing uncontrolled rectifier bridge , increasing the grid voltage detection circuit, so we can handle the rest of the abnormal as the inverter.

26. Figures

27. Thanks！