Programmable Bidirectional DC Power Supply Model 62000D Series

Chroma 62000D series programmable bi-directional DC power supply with both power and load characteristics, dual-quadrant operation, which allows the energy of the object to be tested to be fed into the power supply, suitable for new energy storage system testing, such as photovoltaic/energy storage hybrid inverter, battery storage converter (PCS) test in the simulation of energy storage battery charging and discharging conversion. The 62000D is also suitable for new energy vehicle applications such as bi-directional vehicle chargers (BOBC), bi-directional DC converters, DC-AC motor drives, and other power management systems, replacing batteries to achieve bi-directional power conversion simulation tests.

When traditional DC power supply is used for motor drive testing, it needs to be equipped with a diode at the output to prevent backflooding, and it needs to be added with an electronic load to be used as a backflooding current consuming load when the motor is braking or when it is running downhill. The 62000D series of bi-directional DC power supply can be used as a DC power supply output, and can also be operated as a DC electronic load, with a dual-purpose machine to meet the motor drive test, saving volume and space and easy to configure, but also the backflooding energy back to the grid, to achieve energy-saving benefits, and for the transient response across the quadrant, the 62000D has a high-speed transient response time of less than 1.5ms (-), and the 62000D has a high speed response time of less than 1.5ms (-90% to +90% to -90% to -90%). 90% to +90%).

The 62000D series of bi-directional DC power supplies include 3U high and 4U high models. 3U models with output power up to 6kW/12kW/18kW and 4U models with output power up to 36kW/45kW have high power density. Among them, the 62000D-HL has a unique dual-speed output range, which can satisfy both High (2000V/60A/45kW) and Low (650V/180A/45kW) output ranges with a single unit. One unit meets the test conditions of full power and high current for the object to be tested, and also meets the test conditions of full power and high voltage, such as the wide range of 400V and 800V battery platforms for electric vehicles and charging piles.

62000D series bi-directional DC power supply with 100 steps of programmable settings, users can edit the required output waveforms through the List Mode customization, and 62000D series and has a high slope control to meet many testing needs, such as some of the new energy automotive parts testing regulations LV123, LV148 and other test items needed, with Chroma Softpanel With the Chroma Softpanel interface, users can operate the output test with a single click.

62000D series 3U model for universal voltage 200~480Vac input; 4U model for universal voltage 380~480Vac input, with active PFC low-current harmonic feeder, especially in the high-power test environment significantly save power costs and power system configuration, reduce the temperature of the test environment, suitable for all regions of the world's electric power system, and can choose a variety of control modes, supporting Digital USB/LAN/CAN/GPIB communication interface and analog APG interface control, and CAN FD support for 2000V model.

The rise of new energy PV / EV / Fuel Cell / Battery has become a market trend to replace traditional energy sources (coal, oil, etc.), but a large number of electric vehicle operation and storage battery grid demand will lead to decentralized energy storage microgrids more rapid commercialization, along with power conversion devices will be towards the bi-directional design, high-efficiency, high-voltage conversion and high power density in the direction of combining the battery application trend development. Rapidly, thus prompting the demand for battery simulator (bi-directional power) test equipment.

With the large number of electric vehicles, there is also a demand for household, commercial, and then the soundness of the urban charging network, the formation of a smart grid and new energy storage system ecology. From 5k-30kW intelligent household charging and storage system, to 30k-500kW commercial optical storage and charging station, and then decentralized large-scale energy storage MW combined with new energy photovoltaic, wind, fuel cell power generation, and such a high-power voltage system to 1500V -2000V development, the battery simulation device related to this power conversion device also need to meet this voltage and power requirements. As for high-power power conversion devices such as PCS, ESS, Charger, Inverter, etc., its test equipment needs, users often need to consider the specific area of small, light weight, equipment utilization, flexible disassembly and assembly for multiple power systems to do flexible scheduling and system failure maintenance time affects the R & D and production issues. The 62000D-HL bi-directional DC power supply with master/slave parallel control, single parallel operation is simple and fast, integrated in the cabinet for string PV inverter testing, can be supplied to multiple MPPT inputs, and can also be quickly paralleled to high-power inputs, which is convenient for R&D laboratories, validation units and production lines.

▲62450D-2000HL Master-slave parallel single cabinet up to 360kW * :: Please contact the Chimao office

With the maturity of SiC semiconductor devices and the gradual increase of charging index voltage, the battery platform of electric vehicles has developed from 400V to 800V in order to improve the charging efficiency and the development of range capability, so that the voltage of BOBC, DC-DC, MCU and Inverter of the vehicle's electronic control system, electric drive device, has also increased. Therefore, in terms of test equipment, it is very important to have a platform that can cover both 400V and 800V under the rated power.

Take 400V and 800V co-capacitor 22kW car charger BOBC as an example, the common voltage range will be from 200V~900V or even higher, and for the test equipment must be considered for the rated test and over-voltage (>130%) protection test margin, and the general design of the maximum charging current will be between 200V~450V, the current also needs to be considered for the peak riffle and over-current (>120%-150%) protection test range. The current also needs to consider the peak ripple and overcurrent (>120%-150%) protection test range. Under such a range of operation, users may need a high voltage to 1200V or more, but also a large current of at least 120A bidirectional DC power supply equipment, this time the Chroma 62000D-HL model that meets the needs of a single device to meet this ultra-wide operating range.

62000D-HL bi-directional DC power supply, in a single unit with two sets of ultra-wide output range, 62450D-2000HL, for example, High gear with 2000V/60A/45kW, Low gear with 650V/180A/45kW, the user can be based on the needs of the test conditions, in the stand-alone switching required gear, to meet the conditions of both high voltage or The user can switch the required gears in a single machine according to the demand of test conditions, to meet the conditions of high voltage or high current measurement items, one machine can be used as two machines. With such a wide range of operation, in addition to the high gear to meet the high voltage test points, users can even use the low gear in the load mode, the use of high current, a device can be carried out for a long period of time to test the reliability of the two objects to be tested, and so on.

Model 62000D-HL has dual output ranges in a single machine, the user only needs to complete the switching on the front panel operation screen with one key, or in the remote control to complete the switching with a command, in the production line automated test system ATE only need to use a 62450D-2000HL, to switch the command to select the High/Low gear, you can meet the two groups of output range operation, switching can be completed to continue the test command, the user does not need additional manual disassembly and installation of the equipment output bridge fixture, Chroma allows users to consistently implement the test program and avoid the dangers of manual installation. After the switching is completed, the test command can be continued. Users do not need to manually dismantle and install the bridge fixture at the output end of the equipment, Chroma allows users to consistently execute the test program and avoid the danger of manual installation.

The 62000D series is a bi-directional topology power supply architecture designed to provide two quadrants of positive voltage/positive current and positive voltage/negative current operating ranges, which can be used as a DC power supply output, and can also be used as a DC load load pulling current operation, and the absorbed energy back to the power grid, with a high conversion efficiency of up to 93%, this two-in-one bi-directional DC power supply is also an energy-feedback type of loads, which can be operated in constant voltage, current, and power operating modes. This 2-in-1 bi-directional DC power supply and energy-feedback load can operate in constant voltage, current, and power modes. Compared with traditional power supplies and loads, this power supply has the advantages of small size, energy saving, heat dissipation, and easy testing.

With the popularity of electric vehicles, OBC's vehicle chargers are designed to manage the operation of V2G (Vehicle to Grid), V2L (Vehicle to Load), and V2H (Vehicle to Home) through bi-directional charging and discharging with the power grid. The 62000D series bi-directional DC power supply also provides pure electronic load mode with constant current (CC), constant power (CP), and constant resistance (CR) control, which can be used to simulate the battery charging behavior during the research and development and testing of vehicle chargers. Only one 62000D is needed to meet the charging and discharging tests of bi-directional chargers, replacing the traditional method of needing a DC power supply together with an electronic load and two types of equipment. The 62000D can replace the traditional method of using a DC power supply with an electronic load.

Test Configuration of Bi-directional Car Charger

The 62000D bi-directional DC power supply allows for continuous and seamless current transitions between source and load quadrants without changing output characteristics or causing damage, making it ideal for the fast charge/discharge transition times required in many bi-directional DC-DC/DC-AC battery charge/discharge tests. For the transient response to this change in current direction, the 62000D has a high-speed transient response, with the output voltage responding to a change in load current from -90% to +90% in less than 1.5ms to stabilize.

When testing the acceleration and braking behavior of a motor drive in driving conditions, the conversion between the battery system and the power system will supply and recharge electrical energy. The 62000D dual quadrant's high-speed transient response simulates the battery, switching to the actual motor's power demand, supplying a stable voltage, and allowing the current to recharge during braking.

▲Automotive Start-Stop System Motor Driver Test Application

In response to the global trend of energy conservation and the direction of reducing carbon emissions, various car manufacturers have published the future generation of new energy vehicle technology development and standards and specifications, the definition of various types of electric vehicle testing, which LV123 calibrated high-voltage system components of the vehicle testing, and LV148 calibrated 48V battery voltage system components testing. The 62000D bi-directional DC power supply has a high-speed CV dynamic response slope can be controlled up to 200V/ms, which can be applied to many automotive regulations of electrical characteristics testing, with Chroma Softpanel software, users can also be one-button operation of the output test.

To learn more see:Computer Graphical User Interface SoftPanel Model 62000D

The 62000D series bi-directional power supply design can be used with the Battery Simulator Soft Panel to become a battery simulator, with the ability to simulate the operation of different battery power (SOC) conditions or load a specific battery characteristics V-I curve, to evaluate the test object to be tested (power conversion device) to do the charging or discharging of the battery simulation for use, applicable to For testing products such as car chargers, energy storage devices or motor drives.

To learn more see:Computer Graphical User Interface SoftPanel Model 62000D

600V/1200V/1800V/2000V models with optional solar array simulation, built-in EN50530 & Sandia's SAS model in the stand-alone machine is convenient for users to integrate the use of the front panel operation or remote control, the software has a static and dynamic Maximum Power Point Tracking (MPPT) test, masked I-V curve simulation, the actual weather I-V curve change test, automatic programmed static & dynamic MPPT performance test and automatic report generation in Excel table, the above is very suitable for verifying the performance of string PV inverters. The software features static and dynamic maximum power point tracking (MPPT) tests, masked I-V curve simulation, real weather I-V curve variation test, automatic programmed static & dynamic MPPT performance test and automatic report generation in Excel table, which are very suitable for verifying the performance of string photovoltaic inverters. In addition, the 62180D-1200 & 62180D-1800 models can be connected in parallel with 30 master/slave units, with output specifications up to 540kW/1200V/1200A & 540kW/1800V/1200A respectively, which are suitable for high-voltage 1100V, 1500V commercial (15k-100kW) string inverters and distributed power plant (150k-500kW) inverters. 150k-500kW inverters for commercial (15k-100kW) string inverters and distributed power plant (150k-500kW) inverters.

Energy storage converter (PCS) for the connection between the battery system and the grid can be realized between the two-way conversion of electrical energy devices, the DC side of the battery voltage range from 450V ~ 1500V high-voltage trend of development, this device has a charge and discharge function, active power control, reactive power regulation and switching and off-grid. Users are often troubled by how to prepare the actual high-voltage battery test this PCS in the charging and discharging transitions (specifications are generally <100ms) performance, and can not be quickly reproducible, control, safety, use of R & D validation and production, when the use of high-voltage models 62180D-1800, can be paralleled with 30 units of up to 540kW/1800V/1200A, in order to replace the real battery simulation as a power source or an energy feedback load for this charge. An energy return load for this charging and discharging transient performance in continuous current without interruption.

The 62000D bi-directional DC power supply is equipped with an energy recovery function that allows the rechargeable energy to be incorporated into the power grid. The internal design of the input voltage and frequency anomaly detection allows the power supply equipment to detect anomalies and then actively shut down the output stage to ensure the safe use of the power supply on the grid. The 62000D is equipped with protection mechanisms such as over-voltage protection (OVP), over-current protection (OCP), over-power protection (OPP), over-temperature protection (OTP), fan failure (FanFail), and AC input fault (AC Fault). Among them, AC input fault protection includes overvoltage protection (OVP), undervoltage protection (UVP), three-phase unbalance (Unbalance), utility frequency abnormality (Freq. Error), overcurrent protection (OCP) and so on.

For the test of 11kW BOBC car charger, considering the maximum current ripple and the test range of DC-DC start-up surge current, the test equipment must continue to provide more current range of about 20%-50% under the steady state charging current specification. Therefore, Chroma's 62120D-1200 and 62180D-1200 models have advanced the current capacity in the ring temperature conditions and specific versions above, so that the output range reaches 1200V/55A/13kW-19.5kW.

Related to string photovoltaic inverter test applications, in order to cover the power demand from household to commercial, and including 1.5 times over-allocation design, the maximum short-circuit current of each MPPT is also gradually increased, so facing the demand of the equipment, the current provided in a single MPPT will also be increased. Chroma's model 62180D-1800 can meet the voltage of 1100V and 1500V system, and the current is also advanced to 55A, which can make the output range up to 1800V/55A/19.5kW in the ambient temperature condition and specific version, please refer to the specification table for the related conditions.

Chroma provides high power bi-directional power supply from 54kW-540kW/1800V/1200A system integration services, this power supply system with multiple protection (AC Breaker circuit breaker with overcurrent protection, leakage current detection protection, emergency stop button device, input voltage under-phase, over-voltage, under-voltage, over-temperature of the system, fan failure, etc.) is suitable for R & D and production line long time test use. Suitable for R&D and production line long time testing.   * Models 62180D-1200 & 62180D-1800 can support up to 30 units in parallel up to 540kW. * Please contact our office for paralleling requirements for models 62360D-2000HL & 62450D-2000HL.

The 62000D bi-directional DC power supply has built-in active PFC, which brings low energy consumption and high conversion efficiency for energy-saving performance, and provides a global AC input range of 200~220Vac and 380~480Vac for three-phase inputs, so that users do not have to consider whether they can transfer the power supply to other regions to configure and use a single machine.

* Models 62360D-2000HL & 62450D-2000HL Input range is 3-phase 380~480Vac input.

The 62000D bi-directional DC power supply supports a variety of communication interfaces. Users can connect to the PC through standard USB, LAN and optional GPIB interfaces, and it also has a CAN interface commonly used in the automotive industry, which complies with the CAN2.0 A&B specification of 11-bit/29-bit, and it can read V/I/P parameters at a high speed of 10ms.

62000D bi-directional DC power supply with a new generation of man-machine control interface, with an intuitive touch screen and the design of a friendly user interface, the user can easily operate the instrument similar to the operation of a smart phone behavioral habits to operate the instrument, through the touch screen icon can be completed with all the voltage/current settings and measurement, Program Sequence control settings and preview of the output waveforms, etc., with a wise and Convenient user interface.

In addition to controlling the 62000D from the front panel, the 62000D can also be controlled via a graphical operating software. The user-friendly graphical operation software interface includes the module's operating functions, making it easy for users to get started and operate. The communication interfaces of 62000D series are GPIB, USB and Ethernet, which allow users to have more flexible choices when communicating with 62000D series via PC.