Differential Mode

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J.b. Hacker - One of the best experts on this subject based on the ideXlab platform.

  • 300 GHz six-stage Differential-Mode amplifier
    2010 IEEE MTT-S International Microwave Symposium, 2010
    Co-Authors: H.j. Park, J.s. Rieh, J.b. Hacker
    Abstract:

    A 300 GHz amplifier is fabricated using indium-phosphide (InP) double-heterojunction bipolar transistor (DHBT) technology. The cascade chain in the amplifier contains six unit cells each containing a pair of common-base DHBTs in Differential configuration. A total of three signal lines run through to the unit-cell to obtain the Differential-Mode amplifier gain and provide proper dc bias. Measured results show the peak gain of 17.3 dB at 290 GHz with 10-dB gain-bandwidth of 20 GHz.

  • 300 ghz six stage Differential Mode amplifier
    International Microwave Symposium, 2010
    Co-Authors: H.j. Park, J.s. Rieh, J.b. Hacker
    Abstract:

    A 300 GHz amplifier is fabricated using indium-phosphide (InP) double-heterojunction bipolar transistor (DHBT) technology. The cascade chain in the amplifier contains six unit cells each using a Differential-pair of common-base DHBTs. A total of six signal lines provide connection to the unit cell to obtain the Differential-Mode amplifier gain while providing proper dc bias. Measured results show the peak gain of 17.3 dB at 290 GHz with 10-dB gain-bandwidth of 20 GHz. This design technique could be extremely powerful in generating high terahertz amplifier gain.

Harshit Soni - One of the best experts on this subject based on the ideXlab platform.

  • Modulation Scheme for Three-Phase Differential-Mode Ćuk Inverter
    IEEE Transactions on Power Electronics, 2016
    Co-Authors: Siamak Mehrnami, Sudip K. Mazumder, Harshit Soni
    Abstract:

    Three-phase Differential-Mode inverters are single-stage inverters, which have the potential to reduce the number of devices and cost with higher power density. Among such inverter topologies, Differential-Mode three-phase Ćuk inverter (DTCI) has some advantage over other topologies, including modularity, lower number of switches, bidirectional power flow capability, and galvanic isolation. DTCI is a promising configuration for renewable-/alternative-energy applications with isolated and nonisolated structures. The continuous modulation scheme (CMS), which was introduced originally for the DTCI, activates all of three modules of the inverter. CMS increases the circulating power in modules and hence increases inverter power loss. This paper describes a discontinuous modulation scheme (DMS) for the DTCI which deactivates one module at a time resulting in a discontinuous operation of the inverter modules. The experimental open- and closed-loop results of DMS- and CMS-based DTCI are provided and compared. DMS reduces the circulating power, device voltage ratings, and mitigates the DTCI losses. The DTCI exhibits a nonlinear voltage gain with both DMS and CMS. It has been demonstrated that by feed-forwarding the input voltage and incorporating a static linearization method, the harmonic distortion of the output voltage is considerably reduced.

  • Modular control of a Differential-Mode inverter
    2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
    Co-Authors: Sudip K. Mazumder, Harshit Soni
    Abstract:

    Recently, the operation of a new class of three-phase Differential-Mode inverter have been proposed and their efficacy demonstrated using a discontinuous-modulation-scheme (DMS) based Differential-Mode Ćuk inverter (DMCI). DMS-based DMCI has a completely-modular topological configuration. To extend this modularity of the power stage to control implementation, one has to deal with the nonlinearity due to converter topology and DMS-based topological switching. This paper, starting with an original non-modular control scheme developed based on multi-module sensing and control transitions to a modular control of the DMCI. Experimental results validate the efficacy of the control implementation.

Michael Joseph Mcgowan - One of the best experts on this subject based on the ideXlab platform.

H.j. Park - One of the best experts on this subject based on the ideXlab platform.

  • 300 GHz six-stage Differential-Mode amplifier
    2010 IEEE MTT-S International Microwave Symposium, 2010
    Co-Authors: H.j. Park, J.s. Rieh, J.b. Hacker
    Abstract:

    A 300 GHz amplifier is fabricated using indium-phosphide (InP) double-heterojunction bipolar transistor (DHBT) technology. The cascade chain in the amplifier contains six unit cells each containing a pair of common-base DHBTs in Differential configuration. A total of three signal lines run through to the unit-cell to obtain the Differential-Mode amplifier gain and provide proper dc bias. Measured results show the peak gain of 17.3 dB at 290 GHz with 10-dB gain-bandwidth of 20 GHz.

  • 300 ghz six stage Differential Mode amplifier
    International Microwave Symposium, 2010
    Co-Authors: H.j. Park, J.s. Rieh, J.b. Hacker
    Abstract:

    A 300 GHz amplifier is fabricated using indium-phosphide (InP) double-heterojunction bipolar transistor (DHBT) technology. The cascade chain in the amplifier contains six unit cells each using a Differential-pair of common-base DHBTs. A total of six signal lines provide connection to the unit cell to obtain the Differential-Mode amplifier gain while providing proper dc bias. Measured results show the peak gain of 17.3 dB at 290 GHz with 10-dB gain-bandwidth of 20 GHz. This design technique could be extremely powerful in generating high terahertz amplifier gain.

Todd Shudarek - One of the best experts on this subject based on the ideXlab platform.

  • An integrated inverter output passive sinewave filter for eliminating both common and Differential Mode PWM motor drive problems
    2017 IEEE Applied Power Electronics Conference and Exposition (APEC), 2017
    Co-Authors: Todd Shudarek
    Abstract:

    An integrated output filter that eliminates motor problems due to the PWM waveforms in both common Mode and Differential Mode operation is proposed. The filter includes a three phase inductor constructed with tricore laminations with six mutually coupled windings. The windings possess Differential Mode inductance and proportionally very large common Mode inductance characteristics. The single integrated inductor with the capacitors creates a low pass filter with additional band stop attenuation near the switching frequency in both common Mode and Differential Mode operation. The filter voltage transfer functions are derived. A prototype was constructed and test results presented. Simulation results correlated well with the prototype test data. The prototype filter reduced the Differential Mode THVD to 4.6% while the common Mode voltage near the PWM switching frequency was reduced by 90%.