Simulation result from MATLAB shows that the impedance of damped-type double tuned filter designed with this algorithm is appropriate. Aiming at the question of parameter of damped-type double tuned filter, a new algorithm for designing the parameter of damped-type double tuned filter is proposed based on the relationship between impedance of two single tuned filter and one double tuned filter, and also based on the resonance at tuned frequency one and tuned frequency two are close to zero. Low-pass filters provide a smoother form of a signal, removing the short-term fluctuations and leaving the longer-term trend. A method for designing a double-tuned filter for a high-voltage DC power transmission system according to the present invention includes: setting an input parameter constituting a double-tuned filter (MTF) setting a resonance frequency of the double-tuned filter Extracting at least one L, C combination case constituting the double-tuned. filter, A new method of designing double-tuned f ilter is proposed based on resonance frequency, by using the relationship that the impedance of double-tun d filter and two parallel single tuned. There is a new configuration of double tuned filter that has damping resistor, called damped-type double tuned filter.

However, double tuned filter doesn't have a damping resistor which can prevent network elements from exposing to harsh condition such as when the system reactance and the filter impedance are conjugated, this condition can cause severe overvoltage harmonics on the filter and other power system components. Passive filter which mostly used is double tuned filter.

Please read the kit-building instructions (see below) for more details on the circuit, design trade-offs, construction. It has a 50-ohm input and output impedance. The kit can therefore be used with our relay-switched filter kit. Currently, passive filter has been widely used in suppressing harmonics distortion. The Band Pass Filter kit is the same size as our LPF kit, 1.5 x 0.5 inches (38.1 x 12.7mm). Due to harmonics problems generated by converter devices.

Double tuned filter designer