switched capacitor voltage converters

Current control techniques for three phase voltage source PWM converters a survey

Ngày tải lên : 03/01/2014, 19:45

... Soft -Switched RDCL Converters In soft -switched RDCL three-phase converters with zerovoltage switching (ZVS), the commutation process is restricted to the discrete time instants when the dc-link voltage ... [8] 5) DC-Link Voltage Limit: A voltage reserve is required to force an ac-side (load) current according to its command value For small amplitudes of ac-side voltage, the dc-link voltage is not ... TECHNIQUES FOR THREE-PHASE VS-PWM CONVERTERS While phase voltages can be controlled independently, phase currents are determined not only by their own phase voltage, but also by those of other...

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Low voltage low power switched capacitors modulator design

Ngày tải lên : 09/09/2015, 18:49

... Figure 4.14 Performance versus supply voltage 52 Figure 5.1 (a) Double-sampled switched- capacitor integrator (b) Simplified model of double-sampled switched- capacitor integrator 58 ... higher threshold voltage has an important impact on circuits design This chapter discusses low -voltage low-power issues related to switched- capacitor (SC) circuits and introduces low -voltage and low-power ... considerations for low -voltage low-power circuits The discussion starts from low -voltage circuit design issues Then it is followed by low -voltage circuit design techniques Collaborated with low -voltage application,...

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Xe ô tô BMW X5 E70 SM 03a_E70 Voltage Supply and Bus

Ngày tải lên : 19/10/2012, 13:48

... Systems • Understand D-CAN • Understand FlexRay • Locate E70 voltage distribution components E70 Voltage Supply and Bus Systems E70 Voltage Supply In view of the ever increasing electrical functions ... KL30g_f Switched positive (fault dependent) KL30g Switched positive, time dependent KL15 Ignition ON DME DME main relay BSD Bit-serial data interface K-CAN Body CAN PT-CAN Powertrain CAN E70 Voltage ... information - “Vertical Dynamics Systems” 38 E70 Voltage Supply and Bus Systems NOTES PAGE 39 E70 Voltage Supply and Bus Systems System Overview 40 E70 Voltage Supply and Bus Systems Legend for System...

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DUAL LOW VOLTAGE POWER AMPLIFIER

Ngày tải lên : 12/09/2013, 10:00

... unless otherwise specified) PARAMETER Operating Supply Voltage Quiescent Circuit Current SYMBOL TEST CONDITIONS VCC ICC VIN=0 Stereo Closed Loop Voltage Gain Bridge Channel Balance DIP-8 SOP-8 Output ... QW-R107-006.E TDA2822 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Supply Voltage Output Peak Current SYMBOL VCC IO(peak) RATINGS UNIT 15 V A DIP-8 1.0 Power Dissipation ... www.unisonic.com.tw -1 0.4 0.28 VCC=3V,RL=4Ω, THD=10% DIP-8 SOP-8 DIP-8 SOP-8 Ripple Rejection Output Noise Voltage Cross Talk Input Resistance MIN 1.8 24 100 TYP 40 40 0.65 0.45 0.11 0.07 1.35 0.94 0.35...

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Analog Voltage Input

Ngày tải lên : 29/09/2013, 11:20

... the ADTRG pin Press SW28 to input a lowlevel voltage to the ADTRG pin; release it to input a high-level voltage to the ADTRG pin • Convert the analog voltage input to the AN4 pin from analog to ... errors, sufficient measures are also required in this case, too VREF is a reference voltage pin for converting voltages between AVss and VREF into 10 bits (1024 steps) A/D conversion is started ... board Fully turn the trimmer clockwise to input the VREF voltage to the AN4 pin, or fully turn it counterclockwise to input the AVss voltage to the AN4 pin Further, eight LEDs are connected by...

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Analog Voltage Output

Ngày tải lên : 29/09/2013, 11:20

... converter output voltage can control the brightness of the LED The higher the output voltage, the brighter the LED glows; the lower the output voltage, the dimmer the LED becomes A voltage of approximately ... output voltage of to V Changes in the LED brightness would be more easily identifiable visually by changing the output voltage from V to V http://resource.renesas.com Page 127 Output a voltage ... numeric values into voltages in 1024 steps using the D/A converter What you do? (A) Since the resolution of the D/A converter is fixed at bits, they cannot be converted into voltages in 1024 steps...

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Tài liệu tiếng anh Điện tử công suất mạch MERS A new AC current switch called MERS with low on state voltage IGBTs for renewable energy and power saving applications

Ngày tải lên : 15/10/2013, 16:10

... saturation voltage 1) Surge voltage caused by turning off appears with almost zero static voltage, while voltage source type converter needs to carry the surge voltage on top of a full rated dc link voltage ... the voltage across the capacitor is low This means the surge voltage will be low compared to that of a traditional PWM converter Two cases were investigated In case number 2, the dc-link voltage ... in the capacitor voltage being changed dynamically from zero to peak voltage as for the other MERS applications Dc power is supplied from the diode rectiﬁer through the dc inductor to the capacitor...

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Tài liệu tiếng anh Điện tử công suất mạch MERS A new automatic voltage regulator of self excited induction generator using SVC magnetic energy recovery switch

Ngày tải lên : 15/10/2013, 16:10

... IGBT will turn off at non zero voltage because a dc voltage (dc-offset) still remain in the dc capacitor Discontinuous mode occures when there is a dc voltage over the capacitor only part of the ... by ﬁxed capacitor This can be achieved by switching off all IGBTs, it can be shown that in the dc capacitor some voltage was appeared As load increased, terminal voltage decreased When voltage ... Istator −8 Iload Ifixed capacitor Iload Ifixed capacitor Isvc mers 200 100 2.8 Time (s) 2.9 Isvc mers −8 Capacitor voltage (V) −8 −8 Capacitor voltage (V) Current (A) Current (A) Fig 19 Simulation...

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Tài liệu tiếng anh Điện tử công suất mạch MERS Voltage rating reduction of magnetic power supplies using a magnetic energy recovery switch

Ngày tải lên : 15/10/2013, 16:12

... output The size of the capacitors relates to the voltage rating of the power supply Therefore, voltage rating reduction causes decreasing of the DC capacitors In general, the DC capacitors occupy ... Both these parts of energy pulsate and cause voltage ﬂuctuations of the capacitors The capacitors must maintain the voltage within a range; therefore the capacitors must store energy as large as ... current ﬂows (d) When the capacitor is charged and the MOSFETs are turned on, the capacitor discharges Fig shows schematic waveforms of generated current and voltage of the capacitor of the MERS...

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A new modular voltage source inverter topology

Ngày tải lên : 15/10/2013, 16:23

... controlled voltage balancing In order to keep the capacitors on the same voltage level and to ensure equal stress for the power devices the following algorithm is applied for each arm: The voltages ... information about the sign may be derived from the voltage difference of two subsequent voltage samples By this method, continuous balancing of the capacitor voltages is achieved Inherently, this concept ... sends its capacitor- voltage back to the central control unit, periodically The power supply voltage for data transfer and the drive circuits of the IGBTs is supplied from the local capacitor...

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Điện tử công suât mạch MMC Thesis modular multilevel converters for railway supply

Ngày tải lên : 15/10/2013, 16:24

... peak voltages becomes 44 kV and the total capacitor voltage in the arms must cover at least half this value, i.e the capacitor voltage must be at least 22 kV Thus the total ∑ capacitor voltage, ... step in the output voltage waveform is the voltage increment corresponding to half the DC voltage 10 Fig 2.5 Three-level flying capacitor voltage- source converter The Flying Capacitor VSC has ... respectively The instantaneous capacitor voltages in the arm are half the single-phase voltage plus the voltage of the corresponding phase at the three-phase side The capacitor voltages in the lower and...

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Điện tử công suât mạch MMC Control and experiment of pulse width modulated modular multilevel converters

Ngày tải lên : 15/10/2013, 16:24

... is an ac -voltage command for the u-phase load u Note that Fig includes the feedforward control of the dc supply voltage E The voltage command v∗ is normalized ju by each dc -capacitor voltage vC ... current controllability As a result, the line-toneutral voltage is a nine-level voltage waveform, and a line-toline voltage is a 17-level voltage waveform with an equivalent switching frequency ... line-to-line rms voltage V 5.5 kV Rated rms current I 105 A Rated frequency f 50 Hz DC supply voltage E kV Buﬀer inductance l mH (3.1%) DC capacitance C 1.9 mF DC capacitor voltage VC 2.25 kV...

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Điện tử công suât mạch MMC Modular multilevel converter based STATCOM topology suitable for medium voltage unbalanced systems

Ngày tải lên : 15/10/2013, 16:24

... voltage, the capacitor voltage of the HBM, decreases for a positive input current (iN x > 0), and increases for a negative input current (iN x < 0) Conversely, in the PL-HBCC, the capacitor voltage ... (iP x < 0) When the output voltage of a HBM is set to zero, the capacitor voltage will not change in both of the HBCCs These switching effects can be used for capacitor voltage balancing among all ... 2010 B Capacitor voltage balancing in the cascaded HBM Each HBM has two complementary switches in series, providing either the DC-link voltage or zero for the AC output When the AC output voltage...

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Study Guide Switching 3.0 (Building Cisco Multilayer Switched Networks)

Ngày tải lên : 16/10/2013, 13:15

... and troubleshoot a switched network problems; Describing the different Trunking Protocols; Configuring Trunking on a switch; Maintaining VLAN configuration consistency in a switched network; Configuring ... 1900/2800 Series, which provides switched 10 Mbps to the desktop or to 10BaseT hubs in small to medium campus networks • The 2900 Series, which provides 10/100 Mbps switched access for up to 50 users ... functions must be introduced As mentioned in Section 1.1.3, a switched environment offers the technology to overcome flat network limitations Switched networks can be subdivided into virtual LANs (VLANs)...

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KRONE - Datasheet - HIGHBAND - Over Voltage Arrestor Magazine

Ngày tải lên : 26/10/2013, 18:15

... KRONE HIGHBANDTM Arrestor Magazine Pole Equipped Overvoltage Protection for HIGHBAND 10 Product Description and Application Part Numbers: Overvoltage Arrestor Magazine made to suit HIGHBAND™ 10 ... electrical performance of module and magazine Voltage/ Current rating at 25°C ambient: 150V AC at 2.5A max Dielectric strength: > 1.5kV AC Surge voltage strength (1.2/50 µ sec wave shape):...

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TestKing''''s Building Cisco Multilayer Switched Networks

Ngày tải lên : 26/10/2013, 23:15

... Explanation: The second option is to implement virtual LANs (VLANs) within the switched network Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page QUESTION NO: 61 Which of the following ... if there is an extended access list on any MLS interfaces Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 234-235 QUESTION NO: Which of the following features of VLAN ... for a period of time called the fwd delay (forward delay) Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 139 QUESTION NO: When using the CGMP protocol, CGMP-enabled...

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Media Converters OptEnet™ Media Converter Platform

Ngày tải lên : 27/10/2013, 00:15

... Media Converters OptEnet™ Media Converter Platform Common Equipment OptEnet™ Modular Chassis The OptEnet ... panel Power and temperature status LEDs OptEnet DC Power Supply Module Specifications DC Input Voltage: -48Vdc, +24Vdc Ordering Information Catalog Number Description OptEnet +24Vdc power supply ... supply module – extended temp ADCCE2400A www.adc.com • +32-2-712-65-00 • +32-2-712-65-42 176 Media Converters OptEnet™ Media Converter Platform Common Equipment Communications Modules 100571 600...

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Distribution in low-voltage installations

Ngày tải lên : 28/10/2013, 03:15

... E - Distribution in low -voltage installations A distinction is made between: b Traditional distribution switchboards in ... Electrical installation guide 2010 EIG_chap_E-2010.indb 17 04/12/2009 11:52:13 E - Distribution in low -voltage installations b Type tests and routine tests They ensure compliance of each distribution ... Electrical installation guide 2010 EIG_chap_E-2010.indb 19 04/12/2009 11:52:13 E - Distribution in low -voltage installations Busways, also referred to as busbar trunking systems, stand out for their...

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Tài liệu Study Guide Switching 3.0 (Building Cisco Multilayer Switched Networks) Version 1.1 pptx

Ngày tải lên : 10/12/2013, 17:15

... and troubleshoot a switched network problems; Describing the different Trunking Protocols; Configuring Trunking on a switch; Maintaining VLAN configuration consistency in a switched network; Configuring ... 1900/2800 Series, which provides switched 10 Mbps to the desktop or to 10BaseT hubs in small to medium campus networks • The 2900 Series, which provides 10/100 Mbps switched access for up to 50 users ... functions must be introduced As mentioned in Section 1.1.3, a switched environment offers the technology to overcome flat network limitations Switched networks can be subdivided into virtual LANs (VLANs)...

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Tài liệu Voltage tanding Wave Ratio docx

Ngày tải lên : 12/12/2013, 11:15

... Historically VSWR was measured by probing the transmission line From the ratio of the maximum to minimum voltage, the reflection coefficient and terminating impedance could be calculated This was a time...

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