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公开(公告)号：WO2007038887A2
公开(公告)日：2007-04-12
申请号：PCT/CH2006000524
申请日：2006-09-29
Applicant: ABB SCHWEIZ AG , PONNALURI SRINIVAS , STEIMER PETER
Inventor： PONNALURI SRINIVAS , STEIMER PETER
CPC classification number: H02M7/493
Abstract: The control means of each converter unit produces an output voltage based on reference signals (u* d, u* q ) that are generated from the active and reactive components (P, Q) of each converters output power. A first reference signal for a reactive component of the output voltage (u* q ) is set to zero, thus regulating the reactive component of the output voltage to zero. Therefore, only the active component is contributing to the actual output voltage. The reference signal for the active component of the output voltage (u*d) is produced based on the active power component (P) with an active power vs. active voltage droop. To synchronize the frequencies of all converter units a reactive power vs. frequency droop is introduced for each converter unit, regulating the frequency based on changes in the reactive power component (Q) of each converter unit. Since the control means of each converter unit produces its reference signals based on the converter units own reactive and active power output, no communication is necessary between the various converter units operating in parallel. Converter units can therefore be placed anywhere without communication.
Abstract translation: 每个转换器单元的控制装置基于从有功和无功分量（P，S）产生的参考信号（u *，d，u * q * q）产生输出电压， Q）每个转换器的输出功率。 将输出电压（u * ）的无功分量的第一参考信号设置为零，从而将输出电压的无功分量调整为零。 因此，只有有源元件有助于实际的输出电压。 基于具有有功功率与有功电压下降的有功功率分量（P）产生输出电压（u * d）的有源分量的参考信号。 为了同步所有转换器单元的频率，为每个转换器单元引入无功功率与频率下降，基于每个转换器单元的无功功率分量（Q）的变化来调节频率。 由于每个转换器单元的控制装置基于具有无功和有功功率输出的转换器单元产生其参考信号，所以在并行操作的各种转换器单元之间不需要通信。 因此，转换器单元可以放置在任何地方，无需通信。
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公开(公告)号：DE602006006703D1
公开(公告)日：2009-06-18
申请号：DE602006006703
申请日：2006-09-14
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , RONNER BEAT
IPC: D01D5/092
Abstract: The inventive method comprises the steps of introducing a reactive current reference square wave, detecting load voltage changes at every change in the reactive current reverence wave, and determining whether the detected load voltage changes exceed a predefined islanding detection threshold value, indicating a loss of mains and an islanding operation of the power generator. With the inventive loss of mains detection, islanding can be detected within a shortest period of time, even if the local islands active and reactive load matches exactly the distributed generators active and reactive power generation. So even without a sudden voltage change, unintentional islanding can immediately be detected and control electronics can safely turn of the distributed power generator.
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公开(公告)号：BRPI0417631A
公开(公告)日：2007-03-27
申请号：BRPI0417631
申请日：2004-12-13
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , STEINKE JUERGEN , STEIMER PETER
Abstract: First (1) and second (2) sectional direct current (DC) voltage changers (VC) each have a DC circuit (3). Sectional DC VC phases (u1,v1,w1) for the first DC VC each link to sectional DC VC phases (u2,v2,w2) for the second DC VC. A transformer's secondary windings (6) link to the connected DC VC phases of the first and second DC VCs.
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公开(公告)号：CA2595308C
公开(公告)日：2012-11-27
申请号：CA2595308
申请日：2005-05-24
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , SERPA LEONARDO
Abstract: A method is specified for operating a converter circuit, with the converter circuit having a converter unit (1) with a plurality of drivable power semiconductor switches and an LCL filter (3) connected to each phase connection (2) of the converter unit (1), in which the drivable power semiconductor switches are driven by means of a drive signal (S) which is formed from a hysteresis power value (d P), from a hysteresis wattless-component value (d Q) and from a selected flux sector (.theta. n). The hysteresis power value (d P) is formed from a difference power value (P diff) by means of a first hysteresis regulator (16) and the difference power value (P diff) is formed from the subtraction of an estimated power value (P) and of a damping power value (P d) from a reference power value (P ref) , with the damping power value (P d) being formed from a sum, weighted by a variable damping factor (k d), of a multiplication of an a component of the space vector transformation of filter capacitance currents (i Cf.alpha.) of the LCL filters (3) by an .alpha. component of the space vector transformation of phase connection currents (i fi.beta.) and a multiplication of a .beta. component of the space vector transformation of filter capacitance currents (i Cf.beta.) of the LCL filters (3) by a .beta. component of the space vector transformation of phase connection currents (i fi.beta.). Furthermore, the hysteresis wattless component value (d Q) is formed from a difference wattless component value (Q diff) by means of a second hysteresis regulator (17), and the difference wattless component value (Q diff) is formed from the subtraction of an estimated wattless component value (Q) and of a damping wattless component value (Q d) from a reference wattless component value (Q ref) with the damping wattless component value (Q d) being formed from a difference, weighted by the variable damping factor (k d) of a multiplication of the .beta. component of the space vector transformation of filter capacitance currents (i Cf.beta.) of the LCL filters (3) by the .alpha. component of the space vector transformation of phase connection currents (i fi.alpha.) and a multiplication of the a component of the space vector transformation of filter capacitance currents (i Cf.alpha.) of the LCL filters (3) by the .beta. component of the space vector transformation of phase connection currents (i f1.beta.). An apparatus for carrying out the method is also specified.
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公开(公告)号：ES2321314T3
公开(公告)日：2009-06-04
申请号：ES05740408
申请日：2005-05-24
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , SERPA LEONARDO
Abstract: Método para el accionamiento de un circuito convertidor, en el que el circuito convertidor presenta una unidad de convertidor (1) con una pluralidad de conmutadores de semiconductores de potencia controlables y un filtro LCL (3) conectado a cada conexión de fases (2) de la unidad de convertidor (1), en el que los conmutadores de semiconductores de potencia controlables se controlan mediante una señal de mando (S) formada por un valor de potencia activa de histéresis (dP), un valor de potencia reactiva de histéresis (dQ) y un sector de flujo seleccionado (zetan), caracterizado por que el valor de potencia activa de histéresis (d P) se forma por un valor de potencia activa de diferencia (P dif) mediante un primer regulador de histéresis (16), por que el valor de potencia activa de diferencia (P dif) se forma por la resta de un valor de potencia activa estimado (P) y un valor de potencia activa de amortiguación (P d) de un valor de potencia activa de referencia (P ref), donde el valor de potencia activa de amortiguación (Pd) se forma por una suma ponderada con un factor de amortiguación ajustable (kd) de una multiplicación de una componente alfa de la transformación de vector espacial de corrientes de capacitancia de filtro (iCfalfa) de los filtros LCL (3) con una componente alfa de la transformación de vector espacial de corrientes de conexión de fases (ifialfa) y una multiplicación de una componente beta de la transformación de vector espacial de corrientes de capacitancia de filtro (iCfbeta ) de los filtros LCL (3) con una componente beta de la transformación de vector espacial de corrientes de conexión de fases (ifibeta ), por que el valor de potencia reactiva de histéresis (dQ) se forma por un valor de potencia reactiva de diferencia (Q dif) mediante un segundo regulador de histéresis (17), por que el valor de potencia reactiva de diferencia (Qdif) se forma por la resta de un valor de potencia reactiva estimado (Q) y un valor de potencia reactiva de amortiguación (Qd) de un valor de potencia reactiva de referencia (Q ref), donde el valor de potencia reactiva de amortiguación (Q d) se forma por una diferencia ponderada con el factor de amortiguación ajustable (kd) de una multiplicación de la componente beta de la transformación de vector espacial de corrientes de capacitancia de filtro (iCfbeta ) de los filtros LCL (3) con la componente alfa de la transformación de vector espacial de corrientes de conexión de fases (ifalfa) y una multiplicación de la componente alfa de la transformación de vector espacial de corrientes de capacitancia de filtro (iCfalfa) de los filtros LCL (3) con la componente beta de la transformación de vector espacial de corrientes de conexión de fases (i fibeta ).
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Patent Agency Ranking
公开(公告)号：HK1122911A1
公开(公告)日：2009-05-29
申请号：HK08113898
申请日：2008-12-23
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , STEIMER PETER
IPC: H02M20060101
Abstract: The control means of each converter unit produces an output voltage based on reference signals (u* d , u* q ) that are generated from the active and reactive components (P, Q) of each converters output power. A first reference signal for a reactive component of the output voltage (u* q ) is set to zero, thus regulating the reactive component of the output voltage to zero. Therefore, only the active component is contributing to the actual output voltage. The reference signal for the active component of the output voltage (u* d ) is produced based on the active power component (P) with an active power vs. active voltage droop. To synchronize the frequencies of all converter units a reactive power vs. frequency droop is introduced for each converter unit, regulating the frequency based on changes in the reactive power component (Q) of each converter unit. Since the control means of each converter unit produces its reference signals based on the converter units own reactive and active power output, no communication is necessary between the various converter units operating in parallel. Converter units can therefore be placed anywhere without communication.
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公开(公告)号：AT431004T
公开(公告)日：2009-05-15
申请号：AT06775187
申请日：2006-09-14
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , RONNER BEAT
IPC: H02J3/38
Abstract: The inventive method comprises the steps of introducing a reactive current reference square wave, detecting load voltage changes at every change in the reactive current reverence wave, and determining whether the detected load voltage changes exceed a predefined islanding detection threshold value, indicating a loss of mains and an islanding operation of the power generator. With the inventive loss of mains detection, islanding can be detected within a shortest period of time, even if the local islands active and reactive load matches exactly the distributed generators active and reactive power generation. So even without a sudden voltage change, unintentional islanding can immediately be detected and control electronics can safely turn of the distributed power generator.
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公开(公告)号：DE502004007249D1
公开(公告)日：2008-07-03
申请号：DE502004007249
申请日：2004-12-13
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , STEINKE JUERGEN , STEIMER PETER
Abstract: First (1) and second (2) sectional direct current (DC) voltage changers (VC) each have a DC circuit (3). Sectional DC VC phases (u1,v1,w1) for the first DC VC each link to sectional DC VC phases (u2,v2,w2) for the second DC VC. A transformer's secondary windings (6) link to the connected DC VC phases of the first and second DC VCs.
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公开(公告)号：DE502005006587D1
公开(公告)日：2009-03-19
申请号：DE502005006587
申请日：2005-05-24
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , SERPA LEONARDO
Abstract: A method is disclosed for operating a converter circuit, with the converter circuit having a converter unit with a plurality of drivable power semiconductor switches and an LCL filter connected to each phase connection of the converter unit, in which the drivable power semiconductor switches are driven by means of a drive signal which is formed from a hysteresis power value, from a hysteresis wattless-component value and from a selected flux sector. An apparatus for carrying out the method is also disclosed.
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公开(公告)号：AT422272T
公开(公告)日：2009-02-15
申请号：AT05740408
申请日：2005-05-24
Applicant: ABB SCHWEIZ AG
Inventor： PONNALURI SRINIVAS , SERPA LEONARDO
Abstract: A method is disclosed for operating a converter circuit, with the converter circuit having a converter unit with a plurality of drivable power semiconductor switches and an LCL filter connected to each phase connection of the converter unit, in which the drivable power semiconductor switches are driven by means of a drive signal which is formed from a hysteresis power value, from a hysteresis wattless-component value and from a selected flux sector. An apparatus for carrying out the method is also disclosed.
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