Direct Active Power Control for Regenerative Cascade Inverter with Reduced AC Power in DC Link

Qiu, Changqing; Huang, Shenghua; Wang, Ende

doi:10.7305/automatika.2014.12.545

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…A full order observer, which is based on volt ampere relation of the DC bus capacitor, is proposed to reduce the 2-f ripple in the DC bus voltage for a regenerative cascade inverter [25]. However, the full order observer is very sensitive to the random measuring noise, which leads to a poor performance in real system.…”

Section: Kalman-filter-based Input Power Feedforwardmentioning

confidence: 99%

Performance Improvement for Two-Stage Single-Phase Grid-Connected Converters Using a Fast DC Bus Control Scheme and a Novel Synchronous Frame Current Controller

Huang

Chen

2017

Energies

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Two-stage single-phase grid-connected converters are widely used in renewable energy applications. Due to the presence of a second harmonic ripple across the DC bus voltage, it is very challenging to design the DC bus voltage control scheme in single-phase grid-connected inverters. The DC bus voltage controller must filter the ripple and balance a tradeoff between low harmonic distortion and high bandwidth. This paper presents a fast DC bus voltage controller, which uses a second order digital finite impulse response (FIR) notch filter in conjunction with input power feedforward scheme to ensure the steady-state and dynamic performance. To gain the input power without extra hardware, a Kalman filter is incorporated to estimate the DC bus input current. At the same time, a modulation compensation strategy is implemented to eliminate the nonlinearity of the grid current control loop, which is caused by the DC bus voltage ripple. Moreover, a novel synchronous frame current controller for single-phase systems is also introduced, and its equivalent model in stationary frame has been derived. Simulation and experimental results are provided to verify the effective of the proposed control scheme.

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Section: Kalman-filter-based Input Power Feedforwardmentioning

confidence: 99%

Performance Improvement for Two-Stage Single-Phase Grid-Connected Converters Using a Fast DC Bus Control Scheme and a Novel Synchronous Frame Current Controller

Huang

Chen

2017

Energies

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“…Therefore, the single neuron intelligent adjustment coefficient K can be automatically adjusted to change the stability of control system. The original design of the boiler superheated steam temperature control method is two PID control systems (Wang et al, 2015;Ribic and Matausek, 2014;Qiu et al, 2014;Attia et al, 2014;Chen et al, 2013;Kanthaswamy and Jerome, 2012;Vosoughi et al, 2014). The systems have a primary PID regulator and a secondary one.…”

Section: Remarkmentioning

confidence: 99%

An improved single neuron self-adaptive PID control scheme of superheated steam temperature control system

Lei¹,

Lim²,

Fei³

2017

IJSCIP

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The control unit of superheated steam temperature of thermal power plants has poor quality, and easy over-temperature problem. In this paper, according to the single neuron adaptive controller with self-learning, strong adaptability, high robustness and fast response, an improved single neuron selfadaptive proportional-integral-derivative (PID) control scheme of superheated steam temperature control system has been presented. The proposed control L. Yu et al. scheme has two main characteristics: 1) Compared with the traditional PID control scheme, the three PID control parameters of proportional, integral, differential coefficients become a neuron adaptive control coefficient K; 2) This proposed control strategy has provided a new theoretical basis and research methods in the application of control system of superheated steam temperature. Simulation results show that the control scheme has improved the control performance of large time delay, multi-disturbance, and has reflected the strong robustness, high stability and good control quality.

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Direct Active Power Control for Regenerative Cascade Inverter with Reduced AC Power in DC Link

Cited by 2 publications

References 20 publications

Performance Improvement for Two-Stage Single-Phase Grid-Connected Converters Using a Fast DC Bus Control Scheme and a Novel Synchronous Frame Current Controller

Performance Improvement for Two-Stage Single-Phase Grid-Connected Converters Using a Fast DC Bus Control Scheme and a Novel Synchronous Frame Current Controller

An improved single neuron self-adaptive PID control scheme of superheated steam temperature control system

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