Durham Research Online
... done because the dc link voltage of the commercial drive used for the laboratory tests was set at 325 V, which was relatively high compared to the required fundamental voltage on the ac side. The dc link voltage could not be further lowered without causing converter tripping on undervoltage protecti ...
... done because the dc link voltage of the commercial drive used for the laboratory tests was set at 325 V, which was relatively high compared to the required fundamental voltage on the ac side. The dc link voltage could not be further lowered without causing converter tripping on undervoltage protecti ...
TPS60400EVM-178 for Evaluating TPS6040x
... It is important to operate this EVM within the specified input and output ranges described in the EVM User’s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field r ...
... It is important to operate this EVM within the specified input and output ranges described in the EVM User’s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field r ...
Specific symptoms of single-phase inverters faults that are required for an expert system design Sergiu Valentin Popescu, Constantin Ghiţă, Anca-Simona Deaconu, Aurel-Ionuţ Chirilă, Ioan-Dragoş Deaconu
... UPS starts to supply a correct output voltage. This step is required because otherwise the UPS’s loads are supplied with ramp-up RMS voltage. When the transformer Tcs signals to the UPS’s control block a correct voltage, the static switch CS1 is left off. If a fault occurs, and after 5 seconds the t ...
... UPS starts to supply a correct output voltage. This step is required because otherwise the UPS’s loads are supplied with ramp-up RMS voltage. When the transformer Tcs signals to the UPS’s control block a correct voltage, the static switch CS1 is left off. If a fault occurs, and after 5 seconds the t ...
Aalborg Universitet Benchmarking of Constant Power Generation Strategies for Single-Phase Grid-
... Photovoltaic (PV) systems have a high growth rate during the last several years, and will play an even more significant role in the future mixed power grid [1]–[3]. Currently, a Maximum Power Point Tracking (MPPT) is mandatory for the PV systems in most active grid codes and also to ensure the maxim ...
... Photovoltaic (PV) systems have a high growth rate during the last several years, and will play an even more significant role in the future mixed power grid [1]–[3]. Currently, a Maximum Power Point Tracking (MPPT) is mandatory for the PV systems in most active grid codes and also to ensure the maxim ...
NI USB-6001/6002/6003 User Guide
... .NET Languages without NI Application Software With the Microsoft .NET Framework version 2.0 or later, you can use NI-DAQmx to create applications using Visual C# and Visual Basic .NET without Measurement Studio. You need Microsoft Visual Studio .NET 2005 or later for the API documentation to be ins ...
... .NET Languages without NI Application Software With the Microsoft .NET Framework version 2.0 or later, you can use NI-DAQmx to create applications using Visual C# and Visual Basic .NET without Measurement Studio. You need Microsoft Visual Studio .NET 2005 or later for the API documentation to be ins ...
UMFT231XA Datasheet
... A self-powered configuration operates on the principle of drawing power from an external power supply, as oppose to drawing power from the USB host. In this configuration no current is drawn from the USB bus. Figure 5.2 illustrates the UMFT231XA in a typical USB self-powered configuration. In this c ...
... A self-powered configuration operates on the principle of drawing power from an external power supply, as oppose to drawing power from the USB host. In this configuration no current is drawn from the USB bus. Figure 5.2 illustrates the UMFT231XA in a typical USB self-powered configuration. In this c ...
Review of Voltage Sag Compensation Techniques
... To compensate the voltage sag, a new interphase ac-ac topology has been developed. The proposed topology does not need a storage device. A single phase compensator has designed with two transformers and two choppers. The required voltage is made available by controlling the duty cycle of each ac cho ...
... To compensate the voltage sag, a new interphase ac-ac topology has been developed. The proposed topology does not need a storage device. A single phase compensator has designed with two transformers and two choppers. The required voltage is made available by controlling the duty cycle of each ac cho ...
TPS65262-1 - Texas Instruments
... range encompasses the most intermediate bus voltage operating off 5-V, 9-V, 12-V, or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The device ...
... range encompasses the most intermediate bus voltage operating off 5-V, 9-V, 12-V, or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The device ...
MAX5876 12-Bit, 250Msps, High-Dynamic-Performance, Dual DAC with LVDS Inputs General Description
... digital-to-analog converter (DAC). This DAC meets the demanding performance requirements of signal synthesis applications found in wireless base stations and other communications applications. Operating from +3.3V and +1.8V supplies, this dual DAC offers exceptional dynamic performance such as 75dBc ...
... digital-to-analog converter (DAC). This DAC meets the demanding performance requirements of signal synthesis applications found in wireless base stations and other communications applications. Operating from +3.3V and +1.8V supplies, this dual DAC offers exceptional dynamic performance such as 75dBc ...
Aalborg Universitet Control Architecture for Parallel-Connected Inverters in Uninterruptible Power Systems
... Fig. 2. Control diagram for AC/DC. This paper is organized as follows. Section II discusses the UPS topologies that are being used and presents the proposed control structure. In order to analyze system stability, a mathematical model is presented and analyzed in Section III. Experimental results ar ...
... Fig. 2. Control diagram for AC/DC. This paper is organized as follows. Section II discusses the UPS topologies that are being used and presents the proposed control structure. In order to analyze system stability, a mathematical model is presented and analyzed in Section III. Experimental results ar ...
OPA27 OPA37 Ultra-Low Noise, Precision OPERATIONAL AMPLIFIERS
... operational amplifier noise performance. At low source impedances, the lower voltage noise of a bipolar operational amplifier is superior, but at higher impedances the high current noise of a bipolar amplifier becomes a serious liability. Above about 15kΩ, the OPA111 low-noise FET operational amplif ...
... operational amplifier noise performance. At low source impedances, the lower voltage noise of a bipolar operational amplifier is superior, but at higher impedances the high current noise of a bipolar amplifier becomes a serious liability. Above about 15kΩ, the OPA111 low-noise FET operational amplif ...
MAX3676 622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier General Description
... The RSSI output voltage is insensitive to temperature and supply fluctuations. The power detector functions as a broadband power meter that detects the total RMS power of all signals within the detector bandwidth (including input signal noise). The RSSI voltage varies linearly (in decibels) for inpu ...
... The RSSI output voltage is insensitive to temperature and supply fluctuations. The power detector functions as a broadband power meter that detects the total RMS power of all signals within the detector bandwidth (including input signal noise). The RSSI voltage varies linearly (in decibels) for inpu ...
MAX5878 16-Bit, 250Msps, High-Dynamic-Performance, Dual DAC with LVDS Inputs General Description
... ♦ LVDS-Compatible Digital and Clock Inputs ♦ On-Chip +1.20V Bandgap Reference ♦ Low 296mW Power Dissipation ♦ Compact 68 QFN-EP Package (10mm x 10mm) ♦ Evaluation Kit Available (MAX5878EVKIT) ...
... ♦ LVDS-Compatible Digital and Clock Inputs ♦ On-Chip +1.20V Bandgap Reference ♦ Low 296mW Power Dissipation ♦ Compact 68 QFN-EP Package (10mm x 10mm) ♦ Evaluation Kit Available (MAX5878EVKIT) ...
Low Parasitic Capacitance and Low
... 7. M. L. Sheu, Y. S. Tiao, W. F. Yang, and H. M. Yang, “A sweeping mode CMOS capacitive fingerprint sensor chip,” in Proceedings of International Computer Symposiums, 2006, pp. 250-596. 8. H. Morimura, S. Shigematsu, and K. Machida, “A novel sensor cell architecture and sensing circuit scheme for ca ...
... 7. M. L. Sheu, Y. S. Tiao, W. F. Yang, and H. M. Yang, “A sweeping mode CMOS capacitive fingerprint sensor chip,” in Proceedings of International Computer Symposiums, 2006, pp. 250-596. 8. H. Morimura, S. Shigematsu, and K. Machida, “A novel sensor cell architecture and sensing circuit scheme for ca ...
Megger PULSAR Equipment Specifications
... Initiation is by a dry contact or dc potential of 5 Vdc or by ac potential above 115 V*. *Note: AC voltage accuracy is different at lower voltages. Worst case is ±8 ms (1 to 4 Vac rms adjustable threshold, just following wave shape peak). Selectable Time Base The time base used by the timer comes se ...
... Initiation is by a dry contact or dc potential of 5 Vdc or by ac potential above 115 V*. *Note: AC voltage accuracy is different at lower voltages. Worst case is ±8 ms (1 to 4 Vac rms adjustable threshold, just following wave shape peak). Selectable Time Base The time base used by the timer comes se ...
ATX12V Power Supply Design Guide
... Specification, such as information about the physical form factor of the power supply, cooling requirements, connector configuration, and pertinent electrical and signal timing specifications. This document is provided as a convenience only and is not intended to replace the user’s independent desig ...
... Specification, such as information about the physical form factor of the power supply, cooling requirements, connector configuration, and pertinent electrical and signal timing specifications. This document is provided as a convenience only and is not intended to replace the user’s independent desig ...
BHxxMA3 Series
... This IC also features a thermal shutdown circuit that is designed to turn off the output when the junction temperature of the IC exceeds about 170℃. This feature is intended to protect the IC only in the event of thermal overload and is not designed to guarantee operation or act as an active securit ...
... This IC also features a thermal shutdown circuit that is designed to turn off the output when the junction temperature of the IC exceeds about 170℃. This feature is intended to protect the IC only in the event of thermal overload and is not designed to guarantee operation or act as an active securit ...
EV Power BCU-PEV-2.x Battery Control Unit Instructions.
... mode and discharge will be permanently disabled and an alarm state registered. 5) Temperature PTC fuse - switched input - operates in a similar manner to the cell modules input. One or more low ohm value PTC thermistors can be connected in series to this input. The EV Power supplied thermistor is 10 ...
... mode and discharge will be permanently disabled and an alarm state registered. 5) Temperature PTC fuse - switched input - operates in a similar manner to the cell modules input. One or more low ohm value PTC thermistors can be connected in series to this input. The EV Power supplied thermistor is 10 ...
9130B Series Triple Output Power Supply
... The IEC 61010 standard defines safety category ratings that specify the amount of electrical energy available and the voltage impulses that may occur on electrical conductors associated with these category ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating is also acco ...
... The IEC 61010 standard defines safety category ratings that specify the amount of electrical energy available and the voltage impulses that may occur on electrical conductors associated with these category ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating is also acco ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.