Chroma 61800 3U high series of regenerative grid simulators include three models with power ratings of 9kVA, 12kVA, and 15kVA and include single phase and 3-phase operation. With output voltage ranges up to 350VLN and 606VLL, each model can achieve 700VLN by a single phase 3-wire setup. Users are able to increase output power by configuring up to three units in parallel.
Chroma 61809/61812/61815 models are regenerative providing a complete energysaving solution. The power generated by the DUT during the test can be efficiently fed back to the grid, rather than dissipated as heat, which protects the environment and lowers the cost of operation. With this capability, these models can be applied to applications in green energy products, such as PV inverters, energy storage systems (ESS), power conditioning systems (PCS), micro grids, power hardware-in-the-loop (PHIL), electric vehicle power supply equipment (EVSE), on-board charger (OBC) and bidirectional on-board charger (BOBC), etc.
For regulatory testing, 61809/61812/61815 models can be applied to IEC 61000-3-2/-3- 3/-3-11/-3-12 (international regulations for AC voltage testing), IEEE 1547/IEC 62116 (international regulations related to green power generation), electric vehicle to grid (V2G) testing, electric vehicle to load (V2L) testing, electric vehicle to home (V2H) testing, energy storage system (ESS) testing.
By using full digital control technology, these models provide a maximum 350VLN output voltage and 30Hz to 100Hz output frequency. The total harmonic distortion rate is less than 0.5% at full load and 50Hz/60Hz output frequency. In addition to AC output, a DC output mode and AC plus DC output mode is included which can be expanded to DC test and AC test with DC bias voltage. The current output capability can provide 3 times the RMS peak current, which is suitable for a DUT input inrush current test.
The 61809/61812/61815 models are also able to provide precision measurements such as RMS voltage, RMS current, true power, power factor, current crest factor and many others. By applying advanced DSP technology, they can easily simulate power line disturbance (PLD) using LIST, PULSE and STEP modes. Additional features such as the waveform synthesis function allows users to program various distorted harmonic waveforms required by some regulatory standards.
With the intuitive 5" LCD touch screen interface, users can quickly get familiar with the instrument's operation. Remote interfaces include standard USB, LAN, and optional GPIB, CAN interface. Instruments can be controlled by computer and Chroma SoftPanel software for fast digital operation. In addition, Chroma also provides control drivers where users can use LabVIEW software to program integration applications of the control system.
High Power Density
An advanced digital control system and cooling technology allows for a form factor at 3U height as well as achieving outstanding hardware capabilities like 15kVA output power, 350VLN wide output voltage range, 1-phase / 3-phase output mode, 100% DC output, and regenerative function. Chroma has also improved transient capabilities, like rising / falling slew rate of output voltage, providing even a better power test solution for users.
For system applications, the 3U height form factor of Chroma 61809/61812/61815 occupies less space in the system cabinet, which can provide more space and flexibility for users. In addition, they also can be placed on a lab bench which is a source of convenience for the user.
Intuitive Touch Screen
Chroma 61809/61812/61815 models are equipped with a 5" LCD touch screen interface providing users with an intuitive UI interface to quickly perform multiple settings and operations. The rotary knob can enlarge the display for the setting parameters of operation for fine-tuning of parameters. The display mode can expand the measurement value to full screen, making it easy to observe.
Universal AC Input Voltage Range
Chroma 61809/61812/61815 models support wide AC input voltage range and is capable of supporting three phase input voltage ranging from 200VLL to 480VLL ± 10%. Applicable for most of the three phase 200VLL, 380VLL, 400VLL, 480VLL systems implemented around the world.
Power Line Disturbance (PLD) Functions
Chroma 61809/61812/61815 models include Power Line Disturbance (PLD) advanced programming functions and are capable of simulating various types of distorted voltage waveforms and transient conditions required by product validation testing. PLD functions include STEP, PULSE, LIST mode, and SYNTHESIS, Inter-harmonic, and Harmonic Measurement. The STEP and PULSE functions allow users to perform single or continuous step changes of output voltage. The LIST mode is a more versatile function as it allows users to compose complex waveforms of up to 100 sequences. With these programming modes, voltage waveforms required by immunity specifications such as IEC 61000-4-11/-4-13/-4-14/-4-28 can be easily achieved.
In addition, these advanced programming modes are easily set using the touch screen interface. For example, in LIST mode, the editing page can directly take the settings of all sequences and the search function can help quickly find the sequence if an adjustment is needed. Moreover, users can get more intuitive and convenient smartphone like programming as well as copying and pasting functions.
The SYNTHESIS function allows users to create periodic harmonic voltage waveforms up to 50 orders based on a 50/60Hz fundamental frequency. The Inter-harmonic function allows users to perform frequency sweeps ranging from 0.01Hz to 2400Hz on top of the 50/60Hz fundamental frequency. This special function assists users in locating resonance points. The Harmonic Measurement function can measure 50th order harmonics of voltage or current and display values such as fundamental voltage, DC component, and total harmonic distortion.
Master-Slave Parallel Output Function
Chroma 61809/61812/61815 models provide master-slave parallel output functions, which can extend the output power when configuring up to 3 units in parallel. By connecting three 61815 regenerative grid simulators in a master-slave parallel setup, users can achieve a high power density configuration with a total output power of 45kVA at 9U height space.
Key Applications
Common Power Test and Power Grid Related Test
Chroma 61809/61812/61815 models are a full 4 quadrant, full regenerative, AC power sources designed for common electrical power testing such as home appliances and industrial electronics needing a programmable input source. In additional, they are designed to simulate grid characteristics for testing PV inverter and on-line UPSs. As shown below, power can be both sink and source from the DUT seamlessly to support many different applications. In cases where the DUT sources current a detection circuit will sense the excess power and recycle it back to the grid.
Electric Vehicle Related Test
Chroma 61809/61812/61815 models can provide complete power test solutions for electric vehicle industry related products such as electric vehicle supply equipment (EVSE), on board charger (OBC), and can also be compliant with EVSE test regulation SAE J1772 (AC Level 1, AC Level 2), China OBC test regulation QC / T 895. In addition, the development trend of OBC is moving towards bi-directional charge and discharge applications, such as V2G (Vehicle to Grid), V2L (Vehicle to Load) and V2H (Vehicle to Home) technologies. With the regenerative function, optional AC load function and advanced programing PLD function, Chroma 61809/61812/61815 models can meet the requirements of test application related to this bi-directional on board charger (BOBC).
Regenerative AC Load
Chroma 61809/61812/61815 models are available with an optional Regenerative AC Load function (B618007). This option allows for a single device to function as either an AC load or an AC source. This function is intended but not limited to EVSE charging station, hybrid PV inverter, UPS and bi-directional on board charger(BOBC) related test applications.
Powerful Hardware
When Chroma 61809/61812/61815 models operated at AC Load mode, it brings not only the four-quadrant regenerative function with energy savings, but is also single- or 3-phase selectable. In addition, it can support three units in parallel providing a 45kW AC load test solution.
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Flexible Setting Mode
Chroma 61809/61812/61815 regenerative AC load function includes constant current, constant power, and constant impedance modes. An additional setting parameter is crest factor (CF) or voltage/current phase difference (θ) which includes Rectified Mode or Lead/Lag Mode respectively. Rectified Mode can simulate the characteristics of a rectified load by setting the CF from 1.414 to 3, providing a non-sinusoidal loading function. Lead/Lag Mode simulates capacitive or inductive load characteristics by setting phase leading or lagging 0°~90° between voltage and current.
Half-Wave Loading Function
The regenerative AC load option provides a half-wave loading function via CC Rectified Mode. It can provide positive, negative half-wave loading, and 90° leading, trailing edge loading which simulates the characteristics of a SCR/TRIAC. The application include simulating the loading of temperature/light controlling household appliances, protection circuits, induction motors, and testing the output stability of the voltage source.
Stable Loading Capability
Chroma 61809/61812/61815 regenerative AC load provides a load on standby function when the voltage source is starting or is interrupted. It can be used to test the endurance and reliability of an inverter or UPS during power on with a load and various voltage dips, spikes, and other interruptions.
