The Electronic Load

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The Electronic Load Application Notes ZS PL H&H ZSLC Water-cooled ZSLV Low Voltage PMLI Multi-channel ZSAC AC NL Source-Sink Acessories H&H Application Note #9 Battery simulation with electronic load and power supply For DUTs which need a battery to function or whose operating or adjustment parameters depend on battery voltage, this can be simulated with the aid of a power supply and an electronic load. Circuitry Principle The power supply is wired parallel to the load via a decoupling diode. The wired system is stabilized with an electrolytic buffer capacitor. Ideally the current and voltage ranges of the power supply and the electronic load are approximately equal. The following circuit principle clarifies the structure of this kind of battery simulator system. Functional Principle The output voltage of the power supply and the trigger voltage of the electronic load are controlled via a common analog signal (e.g. 0 ... 10 V). In ZS series electronic loads this can be achieved with the ZS08 option. The electronic load must be operated in constant current mode. A corresponding distribution of the control voltage means that the output voltage of the power supply is set slightly above the trigger voltage value of the load. This voltage difference should be as small as possible but equally no transverse current must flow. By changing the trigger control voltage therefore different battery voltages can be simulated. Software GTC H&H offers no guarantee for the function of the suggested applications. H&H offers no guarantee for damage resulting from such applications. 68
The Electronic Load Option MPP Tracking (ZS13) The ZS series Electronic Loads can be upgraded with the ZS13 option to perform MPP tracking (Maximum Power Point Tracking). MPP tracking is used with solar panels to determine the panel's maximum possible power. This operating point (MPP) is derived from the characteristic of a solar panel. The MPP function of the electronic load searches for this point and tracks it, even when Input of system parameters The extent to which the electronic load controls via the MPP can be determined by inputting the system parameter no. 53 "Delta_P_min". The electronic load also needs details about the values in the table below: the sun's radiation fluctuates. Functional principle For correct use of the MPP function of the electronic load it is necessary to understand the functional principle. The electronic load operates in MPP mode in constant voltage mode. If the function is activated, the load starts with a higher voltage than the max. voltage of the These parameters are needed for the electronic load to set the suitable current range and find the MPP point as fast as possible. The parameters are saved permanently to the device and are available after switching the mains power off and on again. Panel data Abbreviation Parameter Rated power „Pmax“ 48 Open circuit voltage „VOC“ 49 Max. short circuit current „ISC“ 10 Voltage in MPP „VPM“ 51 Current in MPP „IPM“ 52 Power range „Delta_P_min“ 53 H&H Application Note #10 MPP tracking with ZS series Electronic Loads solar panel and reduces the voltage. When the specified voltage on the electronic load is less than the actual voltage of the solar panel, current starts to flow. The electronic load continually measures voltage and current and calculates the recorded power. While the power increases the direction of the voltage change is retained. If the power falls (when the settings exceed the maximum power) the direction of the voltage change reverses so that the power rises again. Application Notes ZS PL H&H ZSLC Water-cooled ZSLV Low Voltage GTC PMLI Multi-channel ZSAC AC NL Source-Sink Accessories Software 69
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Issue 03/2013 The Electronic Load
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Contents H&H Location Page 4 Qualit
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The Electronic Load H&H and Quality
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The Electronic Load H&H Service is
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The Electronic Load RS-232 Interfac
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It all started with ... Manufacturi
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The Electronic Load ZS4812 Analog C
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The Electronic Load Data Acquisitio
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Page 25 and 26: For our customers, precision is key
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Page 33 and 34: Our support team never makes you wa
Page 35 and 36: The Electronic Load Available Load
Page 37 and 38: The Electronic Load Technical Data
Page 39 and 40: The Electronic Load ZSAC4226 Remote
Page 41 and 42: The Electronic Load Setting Up Thre
Page 43 and 44: The Electronic Load 400 W ... 21,00
Page 45 and 46: We´re going all out for electricit
Page 47 and 48: The Electronic Load Remote Control
Page 49 and 50: The Electronic Load Calibration Fac
Page 51 and 52: The Electronic Load Type Overview o
Page 53 and 54: The Electronic Load Dimensions h: S
Page 55 and 56: The Electronic Load High Current Ca
Page 57 and 58: The Electronic Load 19“ Racks 19
Page 59 and 60: The Electronic Load H&H Application
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Page 63 and 64: The Electronic Load Loading AC volt
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Page 75 and 76: Johann Hackl Helmut Höcherl After
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